There are snakes and small lizards, but no frogs or toads.
This and some other lizards have power to change their colour, not only from light to dark, but over some portions of their bodies, from yellow to grey or red.
Some nine or ten other species of snakes are present, together with an abundance of lizards, including the Varanus, and most species of Mediterranean tortoises are represented.
Cope, The Crocodilians, Lizards and Snakes of North America, in the Report of the United States National Museum for the year 1898 (Washington, 1900); L.
There are various peculiar species of frogs, lizards and snakes, including the great frog Rana Guppyi, from 2 to 3 lb in weight.
They present a strong family likeness which is not found in any other terrestrial vertebrated animals with exception of some lizards and possibly Caecilians amongst the Amphibia.
The saurians or lizards are numerous, chiefly on dry sandy or rocky ground in the tropical region.
Lizards occur in great profusion and variety.
There are about twenty kinds of night-lizards, and many which hibernate.
Among the inoffensive species are counted the graceful green "tree snake," which pursues frogs, birds and lizards to the topmost branches of the forest; also several species of pythons, the commonest of which is known as the carpet snake.
Every bayou contains alligators; and reptiles of various species, such as turtles, lizards, horned toads, rattlesnakes and moccasins are abundant.
The list of reptiles includes the venomous Vipera ammodytes and Pelias berus, while scorpions and lizards infest the stony wastes of the Karst.
AMPHIBIA, a zoological term originally employed by Linnaeus to denote a class of the Animal Kingdom comprising crocodiles, lizards and salamanders, snakes and Caeciliae, tortoises and turtles and frogs; to which, in the later editions of the Systema N aturae he added some groups of fishes.
In addition Cuvier accepts the Linnaean subdivisions of Amphibia-Reptilia for the tortoises, lizards (including crocodiles), salamanders and frogs; and Amphibia-Serpentes for the snakes, apodal lizards and Caeciliae.
Lagartos (Iguanas) and lizards are common everywhere.
A large Mygale found on the island of Siriba, of the Abrolhos group, feeds upon lizards, and has been known to attack and kill young chickens.
Long, are found on the wooded banks of the rivers; small lizards and chameleons are common, and there are several varieties of tortoise.
Among smaller animals the jerboa and other descriptions of rat, and the wabar or cony are common; lizards and snakes are numerous, most of the latter being venomous.
In the article Lizard attention is drawn to the many characters which make it difficult, if not impossible, to give diagnoses applicable to all lizards and all snakes.
He adhered to this arrangement in his last comprehensive work (Crocodilians, Lizards and Snakes of North America, 1898, Smithsonian Inst., 1900), but combined the Asinea and Proteroglypha as Colubroidea, subdividing these into Peropoda, Aglyphodonta, Glyphodonta, Proteroglypha and Platycerca (Hydrophinae).
Laevis, the "smooth snake" of Europe, in England, in Hampshire and Dorsetshire, eats chiefly lizards; owing to its coloration, which varies much, it is often mistaken for the viper.
Sea-snakes shed their skin frequently; but it peels off in pieces as in lizards, and not as in the freshwater snakes, in which the integuments come off entire.
Some are said occasionally to resort to berries and other fruit for food, but as a rule they are carnivorous, feeding chiefly on birds and their eggs, small mammals, as squirrels, hares, rabbits and moles, but chiefly mice of various kinds, and occasionally snakes, lizards and frogs.
The horned lizard, or horned toad (Phrynosoma cornutum; P. hernandesi; P. modestum), is the most common of Texas lizards, except in the western counties where the Texas rock lizards (Sceloporus torquatus; S.
Of the lizards, 3 of the 6 species of Varanidae, 16 of the 30 Scincidae, 8 Geckonidae, and 8 out of the 11 Agamidae are peculiar.
Scorpions and tarantulas are numerous, and lizards, frogs, beetles, ants, butterflies, moths and flies are abundant.
Bears, wolves, foxes, goats (kokmet), wild sheep (arkharis), lizards, earth-rats, and a small rodent (teshikan), with ravens, eagles, wild ducks and wild geese are the other varieties principally encountered.
Among the reptiles are various species of serpents, tortoises, turtles, lizards, &c. Locusts are common and sometimes do great damage.
But if this is true of the land fauna as a whole, especially on the atolls, where it consists mainly of a few birds, lizards and insects, the opposite is the case with the marine fauna.
Although feeding chiefly on roots, fruits and grain, it is also to some extent carnivorous, attacking and eating small quadrupeds, lizards and birds.
Lizards are reptiles which have a transverse external anal opening (instead of a longitudinal slit as in Crocodilians and tortoises) and which have the right and left halves of the mandibles connected by a sutural symphysis.
The majority are distinguished from snakes by the possession of two pairs of limbs, of external ear-openings and movable eyelids, but since in not a few of the burrowing, snake-shaped lizards these characters give way entirely, it is well-nigh impossible to find a diagnosis which should be absolutely sufficient for the distinction between lizards and snakes.
Lizards that recent representatives of the two great groups seem to run into each other.
The lizards and snakes are the two dominant reptilian orders which are still on the increase in species, though certainly not in size.
As a moderate estimate, the number of recent species of lizards is about 1700.
Most lizards live on animal food, varying from tiny insects and worms to lizards, snakes, birds and mammals, while others prefer a mixed or an entirely vegetable diet.
In many lizards the muscles of the segments of the tail are so loosely connected and the vertebrae are so weak that the tail easily breaks off.
This faculty is of advantage to those lizards which lack other means of escape when pursued by some other animal, which is satisfied with capturing the detached member.
The motions of most lizards are executed with great but not enduring rapidity.
But the limbs show with regard to development great variation, and an uninterrupted transition from the most perfect condition of two pairs with five separate clawed toes to their total disappearance; yet even limbless lizards retain bony vestiges beneath the skin.
The motions of these limbless lizards are similar to those of snakes, which they resemble in their elongate body.
Many lizards, however, retain the eggs in the oviducts until the embryo is fully developed; these species then bring forth living young and are called ovo-viviparous by purists.
Some lizards possess a considerable amount of intelligence; they play with each other, become very tame, and act deliberately according to circumstances.
The Lacertilia, or lizards in the wider sense, fall easily into three natural groups: geckos (q.v.), chameleons (q.v.) and lizards.
Pleurodont lizards with well-developed limbs; without temporal bony arches; postthoracic ribs united across the abdomen.
Acrodont, Old World lizards, with laterally compressed body, prehensile tail and well developed limbs with the digits arranged in opposing, grasping bundles of two and three respectively.
5, xiv., 1884, p. 117, &c.) has further improved upon the then prevailing arrangements, and has elaborated a classification which, used by himself in the three volumes of the catalogue of lizards in the British Museum, is followed in the present article with slight alterations in the order of treatment of the families.
The Varanidae stand quite alone, in many respects the highest of all lizards, with some, quite superficial, Crocodilian resemblances.
Allied is Sceloporus, with about 34 species, the most characteristic genus of Mexican lizards; only 4 species live in the United States, and only 3 or 4 are found south of the Isthmus of Tehuantepec and are restricted to Central America.
The presence of such dewlaps in lizards is always a sign of an excitable temper.
- The teeth of Heloderma are recurved, with slightly swollen bases, loosely attached to the inner edge of the jaws; each tooth is grooved, and those of the lower jaw are in close vicinity of the series of labial glands which secrete a poison; the only instance among lizards.'
The Lacertidae or true lizards comprise about 20 genera, with some 1 00 species, most abundant in Africa; their northern limit coincides.
Most of the European lizards with four well developed limbs belong to the genus Lacerta.
Even the small island-rocks of the Mediterranean, sometimes only a few hundred yards in diameter, are occupied by peculiar races of lizards, which have attracted much attention from the fact that they have assumed under such isolated conditions a more or less dark,.
Thus the analysis of George Baur of the ancestral form of the lizards, mosasaurs, dinosaurs, crocodiles and phytosaurs led both to the generalized Palaeohatteria of the Permian and indirectly to the surviving Tuatera lizard of New Zealand.
Mexico is a paradise of lizards, which are noted for their diversity in form as well as for their remarkable colouration.
Although an inveterate destroyer of eggs, this little creature prefers those of birds and the soft-shelled eggs of lizards to the very hard and strong-shelled eggs which are deeply buried in the crocodile's nest.
The food of the adult is almost exclusively animal, - insects, especially large ants, snails, lizards and snakes, but it also eats certain large red berries.
There also occurs a peculiar genus of lizards with two species, the one marine, the other terrestrial.
Of lizards the iguana (Cyclura caudata) is noteworthy.
They prey upon every kind of arboreal animal - birds, tree-frogs, tree-lizards, &c. All seem to be diurnal, and the larger kinds attain to a length of about 4 ft.
Of reptiles there are the alligator, and several species each of turtles, lizards and snakes.
Lizards are not poisonous, with the single exception of Heloderma.
The smallest lizards of this family belong to the genus Anolis, extremely numerous as regards species (more than ioo) and individuals on bushes and trees of tropical America, and especially of the West Indies.
Finally the presence of the flying lizards (Pterydactylus, Rhamphorhynchus) and the ancient birds (Archaeopteryx) is determined from remains in a most wonderful state of preservation in these ancient deposits.