In common with the okapi, giraffes have skin-covered horns on the head, but in these animals, which form the genus Giraffa, these appendages are present in both sexes; and there is often an unpaired one in advance of the pair on the forehead.
From a linguistic point of view, these treatises with their appendages, the more mystic and recondite Aranyakas and the speculative Upanishads, have to be considered as forming the connecting link between the Vedic and the classical Sanskrit.
Besides the three types of individual above mentioned, there are other appendages of hydroid colonies, of which the individuality is doubtful.
A typical Siphonophore is a stock or cormus consisting of a number of appendages placed in organic connexion with one another by means of a coenosarc. The coenosarc does not differ in structure from that already described in colonial Hydrozoa.
The coenosarc may consist of a single elongated tube or stolon, forming the stem or axis of the cormus on which, usually, the appendages are arranged in groups termed cormidia; or it may take the form of a compact mass of ramifying, anastomosing tubes, in which case the cormus as a whole has a compact form and cormidia are not distinguishable.
The appendages show various types of form and structure corresponding to different functions.
The cormus is always differentiated into two parts; an upper portion termed the nectosome, in which the appendages are locomotor or hydrostatic in function, that is to say, serve for swimming or floating; and a lower portion termed the siphosome, bearing appendages which are nutritive, reproductive or simply protective in function.
Divergent views have been held by different authors both as regards the nature of the cormus as a whole, and as regards the homologies of the different types of appendages borne by it.
The general theories of Siphonophoran morphology are discussed below, but in enumerating the various types of appendages it is convenient to discuss their morphological interpretation, at the same time.
In the siphosome the following types of appendages occur: I.
Siphons or nutritive appendages, from which the order takes its.
Gonostyles, appendages which produce by budding medusae or gonophores, like the blastostyles of a hydroid colony.
The various types of appendages described in the foregoing may be arranged in groups termed cormidia.
In forms in which, on the other hand, the coenosarc forms an elongated, tubular axis or stem, the appendages are arranged as regularly recurrent cormidia along it, and the cormidia are then said to be " ordinate."
The ersaeome (Calycophorida), made up of the same appendages as the preceding type but with the addition of a nectocalyx; when free termed Ersaea.
Thus from the original planula three appendages are, as it were, budded off, while the planula itself mostly gives rise to coenosarc, just as in some hydroids the planula is converted chiefly into hydrorhiza.
In the first place the cormus has been regarded as a single individual and its appendages as organs.
Dividual; it is still possible to compare appendages with parts of an individual which have become separated from one another } by a process of " dislocation of organs."
The Siphonula produced buds on the manubrium, as many Anthomedusae are known to do, and these by reduction or dislocation of parts gave rise to the various appendages of the colony.
70); no nectocalyces or bracts; appendages all on the lower side of the pneumatophore arising from a compact coenosarc, and consisting of a central After C. Gegenbaur.
The cells of the axis are commonly stouter and have much less chlorophyll than those of the appendages (Draparnaldia).
Of supporting axes from assimilating appendages, and as the body increases in size and becomes a solid mass of cells or interwoven threads, a corresponding differentiation of a superficial assimilative system from the deep-lying parts.
M and thin, flat, assimilating, and transpiring appendages osses.
2d, 3 c) is always "free," the legs, wings and other appendages not being 1 Instar is a convenient term suggested by D.
Russia has no oceanic possessions; her islands are all appendages of the mainland to which they belong.
In the Orthorrhapha, in the pupae of which the appendages of the perfect insect are usually visible, the pupa-case generally splits in a straight line down the back near the cephalic end; in front of this longitudinal cleft there may be a small transverse one, the two together forming a T-shaped fissure.
Where locomotive appendages (the parapodia of the Polychaeta) exist, they are never jointed, as always in the Arthropoda; nor are they modified anteriorly to form jaws, as in that group.
Appendages of body re „ duced to branchiae, present only in four species, and - - to the ventral copulatory 32 appendages of Alma and Criodrilus.
The appendages of the body are reduced to branchiae, present in certain forms. A clitellum is present.
Lacuna, foot with two posterior appendages, marine, entirely aquatic. Cremnoconchus, entirely aerial, Indian.
An epipodium bearing three pairs of tentacles and an operculigerous lobe with two appendages; inhabitants of the Sargasso weed.
Mantle with two posterior appendages; ctenidium large and capable of protrusion from pallial cavity.
Foot broad, with two slender posterior appendages; operculum unguiculate.
M, Midgut, with its hepatic appendages h, all of which are not figured.
No buccal appendages or suckers; a very long evaginable proboscis; a quadriradiate terminal branchia.
Of any kind; a short evaginable pharynx, bearing paired conical buccal appendages or " cephalocones."
Dorsal respiratory appendages frequently present.
No anterior tentacles; dorsal appendages broad and foliaceous; foot very narrow; stomach with horny plates.
No anterior tentacles, and no dorsal appendages; body laterally compressed, transparent; pelagic. Phyllirhoe.
Head broad, surrounded by a funnel-shaped velum or hood; no radula; dorsal appendages foliaceous.
Anterior tentacles forming a scalloped frontal veil; dorsal appendages and tentacles similarly ramified.
Body externally symmetrical; anus median, posterior, and generally dorsal, surrounded by ramified pallial appendages, constituting a secondary branchia.
Body elongated; visceral mass marked off from foot posteriorly; dorsal appendages absent, or reduced to a single pair; spicules in the integument.
Anterior tentacles in the form of a digging shield; mantle without appendages, but respiratory papillae beneath the mantle-border.
The head of an insect carries usually four pairs of conspicuous appendages - feelers, mandibles and two pairs of maxillae, so that the presence of four primitive somites is immediately evident.
The compound eyes of insects resemble so closely the similar organs in Crustaceans that there can hardly be reasonable doubt of their homology, and the primitively appendicular nature of the eyes in the latter class suggests that in the Hexapoda also they represent the appendages of an anterior (protocerebral) segment.
The maxillae of the hinder pair become more or less fused together to form a " lower lip " or labium, and the segment of these appendages is, in some insects, only imperfectly united with the head-capsule.
It does not appear to represent a pair of appendages, but the maxillulae of the Aptera become closely associated with it.
It has been shown by C. Janet (1889), from careful studies of the musculature, that the greater part of the head-capsule is built up of the four anterior head-segments, the hindmost of which has the mandibles for its appendages, and this conclusion is in the main supported by the recent work on the head skeleton of J.
Smaller appendages (such as the stylets of male cockroaches) may be carried on the ninth segment.