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front; as, procoelian vertebræ, which have the anterior end of the centra concave and the posterior convex.

A division of Turbellaria including those that have an intestine terminating posteriorly.

The segment which forms the posterior part of the thorax of a hymenopterous insect. [Written also propodeum.]

f the human skull, but which, in all vertebrates below mammals, is not connected with the posterior nares, but serves to connect the palatine bones with the point of suspension of the lower jaw. -- Pterygoid process (Anat.), a process projecting downward from either side of the sphenoid bone, in man divided into two p…

A prominence on the posterior part of the thalamus of the human brain.

Having the posterior side of the tarsus covered with small irregular scales; -- said of certain birds.

Situated in the region of the rump, or posterior end of the backbone; -- applied especially to the posterior median plates in the carapace of chelonians.

The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebræ, and supports the uropigium.

A posterior division of the stomach in some invertebrates.

idbrain of most mammals; the optic lobes. The anterior pair are called the nates, and the posterior the testes.

n causing pain) owing to the presence of sensory fibers from the corresponding sensory or posterior roots.

The examination or study of the soft palate, posterior nares, etc., by means of a laryngoscopic mirror introduced into the pharynx.

Having broad scutella on the front, and small scales on the posterior side, of the tarsus; -- said of certain birds.

ce. See Single, v. i. Single-foot is an irregular pace, rather rare, distinguished by the posterior extremities moving in the order of a fast walk, and the anterior extremities in that of a slow trot. Stillman (The Horse in Motion.)

A tribe of bivalve mollusks in which the posterior mantle border is prolonged into two tubes or siphons. Called also Siphoniata. See Siphon, 2 (a), and Quahaug.

f India. The snout was prolonged in the form of a proboscis. The male had four horns, the posterior pair being large and branched. It was allied to the antelopes, but very much larger than any exsisting species.

ft crab (Zoöl.), any crab which has recently shed its shell. -- Soft dorsal (Zoöl.), the posterior part of the dorsal fin of fishes when supported by soft rays. -- Soft grass. (Bot.) See Velvet grass. -- Soft money, paper money, as distinguished from coin, or hard money. [Colloq. U.S.] -- Soft mute. (Phonetics) See…

A special organ of the nautilus, due to a modification of the posterior tentacles.

The thickened posterior border of the corpus callosum; -- so called in allusion to its shape.

ior wings rudimentary, and in the form of short and slender twisted appendages, while the posterior ones are large and membranous. They are parasitic in the larval state on bees, wasps, and the like; -- called also Rhipiptera. See Illust. under Rhipipter.