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ing form denoting the head, of the head, connected with the head; as, cephalosome, cephalopod.

One of the somites (arthromeres) which make up the head of arthropods. Packard.

The anterior region or head of insects and other arthropods. Packard.

See Cercopod.

A gastropod shell belonging to the family Cerithiïdæ; -- so called from its hornlike form.

ed (Raphanus Raphanistrum) with straw- colored, whitish, or purplish flowers, and jointed pods: wild radish.

A genus of marine amphipod crustacea, which bore into and sometimes destroy timber.

btained from the bully tree (Mimusops globosa) and sometimes also from the naseberry or sapodilla (Sapota zapotilla). It is more plastic than caoutchouc and more elastic than gutta-percha, as an adulterant of which it is used in England. It is used largely in the United States in making chewing gum.…

In the Philippines, the sapodilla or its fruit; also, the marmalade tree or its fruit.

A myriapod of the order Chilognatha.

One of the two principal orders of myriapods. They have numerous segments, each bearing two pairs of small, slender legs, which are attached ventrallly, near together.

One of a group of gastropod mollusks, with a shell composed of eight movable dorsal plates. See Polyplacophora.

Having a mantle; -- applied to certain gastropods.

ce, obtained by treating chloral with water. It produces sleep when taken internally or hypodermically; -- called also chloral.

lding or column built by a victorious choragus for the reception and exhibition of the tripod which he received as a prize. Those of Lysicrates and Thrasyllus are still to be seen at Athens.

kin of such animals as possess them. They are highly developed and numerous in the cephalopods.

Surrounding the esophagus; -- in Zool. said of the nerve commissures and ganglia of arthropods and mollusks.

bar at the ends of which are standards with narrow slits for sighting, supported on a tripod by a ball and socket joint.

Dehiscing or opening by a transverse fissure extending around (a capsule or pod). See Illust. of Pyxidium.

A division of Mollusca having slender, cirriform appendages near the mouth; the Scaphopoda.