It is covered with numerous large papillae, and forms, like the trunk of the elephant, an admirable organ for the examination and prehension of food.
The last named is said to have numerous papillae and no introvert.
The cuticle is frequently prolonged into spines and papillae, which are especially developed at the anterior end of the body.
3) armed with papillae serves as a conducting area.
These diverticula extend usually one into each of the dorsal papillae or " cerata " when these are present.
The Eolid-like Nudibranchs, amongst other specialities of structure, possess (in some cases at any rate) apertures at the apices of the " cerata " or dorsal papillae, which lead from the exterior into the hepatic caeca.
Some amongst them (Tergipes, Eolis) are also remarkable for possessing peculiarly modified cells placed in sacs (cnidosacs) at the apices of these same papillae, which resemble the " thread-cells " of the Coelentera.
Dorsum furnished on either side with papillae, at the base of which are ramified appendages.
Tegumentary papillae not ramified, and containing cnidosacs with nematocysts.
Dorsal papillae spindle-shaped or clubshaped.
Body furnished with three pairs of lateral lobes, bearing the tegumentary papillae; foot very narrow; pelagic. Glaucus.
Bases of the rhinophores surrounded by a sheath; dorsal papillae tuberculated and club-shaped, in a single row on either side of the dorsum; no cnidosacs.
Dorsal papillae with a membranous expansion; male and female apertures at some distance from each other; pelagic. Fiona.
Anterior tentacles in the form of a digging shield; mantle without appendages, but respiratory papillae beneath the mantle-border.
Liver ramifies in integuments and extends into dorsal papillae, but there are no cnidosacs.
Foot narrow; dorsal papillae linear or fusiform, in several - series.
Foot broad; dorsal papillae flattened and foliaceous.
Body depressed, without dorsal papillae, but with two very large lateral expansions, with dorsal plications.
Herdman, " On the Structure and Functions of the Cerata or Dorsal Papillae in some Nudibranchiate Mollusca," Quart.
Small tufts of tactile hairs or papillae are sometimes observed in small number at the tip of the head; sometimes longer hairs, apparently rather stiff, are seen on the surface, very sparingly distributed between the cilia, and hitherto only in a very limited number of small specimens.
Some scattered papillae may possibly be sense-organs.
The flowers are hermaphrodite and regular, with the same number and arrangement of parts as in the order Liliaceae, from which they differ in the inconspicuous membranous character of the perianth, the absence of honey or smell, and the brushlike stigmas with long papillae-adaptations to wind-pollination as contrasted with the methods of pollination by insect agency, which characterize the Liliaceae.
These soluble salts combine with the albumins in the body, and are deposited as minute granules of silver albuminate in the connective tissue of the skin papillae, serous membranes, the intima of arteries and the kidney.
In all these families spines and glandular papillae may be super-added.
In a surprisingly short time the feathers clothing the face of the male are shed, and their place is taken by papillae or small caruncles of bright yellow or pale pink.
The tongue is generally beset with more or less scaly or velvety papillae and has always a well-marked posterior margin, while the anterior portion may or may not be more or less retractile into the posterior part.
- Teeth solid, almost acrodont; tongue long and narrow, deeply bifid, beset with papillae; no osteoderms; scales of the back very small or quite granular; limbs sometimes reduced.
The worm-shaped body is devoid of osteoderms. The tongue is short, covered with imbricating papillae and slightly nicked anteriorly.
Tongue long, with papillae, like that of the Lacertidae but only feebly nicked anteriorly.
Tongue long and bifid, with papillae or folds, with osteoderms on the head but not on the body.
Cardiidae.-Mantle slightly closed; siphons very short surrounded by papillae which often bear eyes; foot very long.
In most species there are three circumvallate papillae at the base, and the apical portion is generally covered with small, thread-like papillae, some of which in the porcupines become greatly enlarged, forming toothed spines.
In addition to the eyes and the olfactory circle on the head scattered tactile papillae are found on the ectoderm.
Given the presence of all the necessary determinants for the development of pigment in a mammal's coat, some or all of the hairs may bear this pigment according to the pattern determinants, or absence of pattern determinants, which the cells of the hair papillae carry.
The tegmentum is pierced by numerous vertical ramified canals which contain epithelial papillae of the epidermis.
These papillae form pallial sense-organs, I containing nerve-end bulbs, covered by a dome of cuticle, and innervated from the pallial nervecords.
In some species there are also sensory papillae comparable to the aesthetes of Chitons.
Slender, tapering behind, with subventral cloacal orifice; thin cuticle without papillae; flattened spicules; no gills.
Short and truncated in front; thick cuticle, often without papillae; gills and 7 radula present.
The tongue is long and flat, and remarkable for the development of the papillae of the anterior part of the dorsal surface, which (except near the edge) are modified so as to resemble long, compressed, recurved, horny spines or claws, which, near the middle line, attain the length of one-fifth of an inch.
The ectoderm is in some genera modified to form certain excretory glands, which usually take the form of papillae with an apical opening.
These papillae give the surface a roughened aspect; the use of their secretion is unknown.
3) has its body covered with papillae, and usually numerous rows of minute hooks encircling the introvert.
The two forms have long and short styles repectively, the stamens occupying corresponding positions half-way down or at the mouth of the corolla-tube; the long-styled flowers have smaller pollen-grains, which correspond with smaller stigmatic papillae on the short styles.
Matic papillae of long-styled G, Style.
Adaptations for aerial respiration are found in some of the landcrabs, where the lining membrane of the gill-chamber is beset with vascular papillae and acts as a lung.
A pair of frontal papillae or filaments, probably sensory, are commonly present.
Ambulacral appendages take the form of: (I) circumoral tentacles, (2) sucking-feet, (3) papillae; of these (I) alone is always present.
- No tube-feet or papillae, but tentacular ampullae more or less developed.
Whatever the form, the upper surface is, however, covered with numerous fine papillae, in which the terminal filaments of the taste-nerve are distributed.
It is about the size of and has much the aspect of a Pigeon; 1 its plumage is pure white, its bill somewhat yellow at the base, passing into pale pink towards the tip. Round the eyes the skin is bare, and beset with cream-coloured papillae, while the legs are bluish-grey.
These structures are all enclosed in the middle subcorneous integument, a continuation of the ordinary skin of the limb, but extremely vascular, and having its superficial extent greatly increased by being developed into papillae or laminae.
A thickened ring encircling the upper part, called coronary cushion (13) and the sole (15), are covered with numerous thickly-set 17 papillae or villi, and take the greatest share in the formation of the hoof; the intermediate part constituting the front and side of the foot (14), corresponding with the wall of the hoof, is covered with parallel, fine longitudinal laminae, which fit into corresponding depressions in the inner side of the horny hoof.
It is formed of pavement epithelial cells, mainly grouped in a concentric manner around the vascular papillae of the subcorneous integument, so that a section near the base of the hoof, cut transversely to the long axis of these papillae, shows a number of small circular or oval orifices, with cells arranged concentrically round them.
The conical papillae are small and close set, though longer and more filamentous on the intermolar portion.
There are no fungiform papillae on the dorsum, but a few inconspicuous ones scattered along the sides of the organ.
It may be entirely bordered by fleshy papillae, or these may be restricted to the sides, or to the sides and the lower border.
These occur on the tips of tendrils and on the tentacles of Drosera; (2) sensitive papillae found on the irritable filaments of certain stamens; and (3) sensitive hairs or bristles on the leaves of Dionaea muscipula and Mimosa pudicaall of which are so constructed that any pressure exerted on them at once reacts on the protoplasm.
- Pleurodont; solid teeth; anterior part of tongue slightly emarginate and retractile, and covered with flat papillae; no osteoderms. Mexico.
Tongue slightly elongated, covered with scale-like papillae and bifurcating.
With regard to sense organs the epithelial papillae of the mantle have been mentioned.