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An extinct genus of marine reptiles allied to Plesiosaurus, but having a much shorter neck.

A marine gadoid food fish of Europe (Pollachius virens). Called also greenfish, greenling, lait, leet, lob, lythe, and whiting pollack.

A marine gadoid fish (Pollachius carbonarius), native both of the European and American coasts. It is allied to the cod, and like it is salted and dried. In England it is called coalfish, lob, podley, podling, pollack, etc.

A division of Radiolaria including numerous minute marine species. The skeleton is composed of silica, and is often very elegant in form and sculpture. Many have been found in the fossil state.

A genus of marine annelids, believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order Archiannelida, or Gymnotoma. See Loeven's larva.

One of two or more species of marine food fishes of the genus Stromateus (S. niger, S. argenteus) native of Southern Europe and Asia.

Any one of several species of marine fishes of the genus Trachynotus, of which four species are found on the Atlantic coast of the United States; -- called also palometa.

green varieties, which are highly esteemed as marbles. Porphyry shell (Zoöl.), a handsome marine gastropod shell (Oliva porphyria), having a dark red or brown polished surface, marked with light spots, like porphyry.

An order of marine Bryozoa, having a bilobed lophophore and an axial cord. The genus Rhabdopleura is the type. Called also Podostomata. See Rhabdopleura.

A genus of large marine gastropods having the outer border of the lip divided into lobes; -- called also scorpion shell.

A short, thick nose; a snubnose. -- Pug"-nosed`, a. Pug-nose eel (Zoöl.), a deep-water marine eel (Simenchelys parasiticus) which sometimes burrows into the flesh of the halibut.

A genus of marine gastropods, usually having a rough and thick shell. Some species yield a purple dye.

A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda.

A genus of large marine gastropods. having a pear-shaped shell. It includes the fig-shells. See Illust. in Appendix.

To run too fast at times, as a marine engine or screw, when the screw is lifted out of water by the action of a heavy sea.

The class of a merchant vessel for marine insurance, determined by its relative safety as a risk, as A1, A2, etc.

teeth. -- Razor grinder (Zoöl.), the European goat-sucker. -- Razor shell (Zoöl.), any marine bivalve shell belonging to Solen and allied genera, especially Solen, or Ensatella, ensis, and Americana, which have a long, narrow, somewhat curved shell, resembling a razor handle in shape. Called also rasor clam, razor f…

Any one of several species of marine food fishes of the genus Diabasis, or Hæmulon, of the Southern United States, having the inside of the mouth bright red. Called also flannelmouth, and grunt.

A genus of marine Bryozoa in which the tubular cells have a centralchitinous axis and the tentacles are borne on a bilobed lophophore. It is the type of the order Pterobranchia, or Podostomata

A division of marine gastropods having a retractile proboscis and three longitudinal rows of teeth on the radula. It includes many of the large ornamental shells, as the miters, murices, olives, purpuras, volutes, and whelks. See Illust. in Append.