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A genus of large arenaceous fossil Foraminifera found in the Cretaceous rocks. The species are globular, or nearly so, and are of all sizes up to that of a tennis ball.

A degenerate order of Crustacea, including the Rhizocephala and Cirripedia.

A crustacean, some of whose feet serve as oars.

One of the thoracic legs of a crustacean. See Illust. of Crustacea.

the rosefish. -- Red-bellied perch, the long-eared pondfish. -- Perch pest, a small crustacean, parasitic in the mouth of the perch. -- Silver perch, the yellowtail. -- Stone, or Striped, perch, the pope. -- White perch, the Roccus, or Morone, Americanus, a small silvery serranoid market fish of the Atlantic coast…

A crustacean gill composed of lamellæ.

A cactaceous shrub (Cereus Pitajaya) of tropical America, which yields a delicious fruit.

One of the abdominal legs of a crustacean. See Illust. under Crustacea.

Any one of the gills of a crustacean that is attached to the side of the thorax.

One of lateral processes of a somite of a crustacean.

One of branchiæ attached to the bases of the legs in Crustacea.

The stalk-eyed Crustacea, -- an order of Crustacea having the eyes supported on movable stalks. It includes the crabs, lobsters, and prawns. Called also Podophthalmata, and Decapoda.

The eyestalk of a crustacean.

Having numerous facets; -- said of the compound eyes of insects and crustaceans.

Any small cetacean of the genus Phocæna, especially P. communis, or P. phocæna, of Europe, and the closely allied American species (P. Americana). The color is dusky or blackish above, paler beneath. They are closely allied to the dolphins, but have a shorter snout. Called also harbor porpoise, herring hag, puffing pig…

A breviary; a prayer book. [Written variously portace, portasse, portesse, portise, porthose, portos, portus, portuse, etc.] [Obs.] Spenser. Camden. By God and by this porthors I you swear. Chaucer.

That part of a crustacean behind the cephalothorax; -- more commonly called abdomen.

Any one of numerous species of large shrimplike Crustacea having slender legs and long antennæ. They mostly belong to the genera Pandalus, Palæmon, Palæmonetes, and Peneus, and are much used as food. The common English prawn in Palæmon serratus.

he skin in hot weather. -- Prickly pear (Bot.), a name given to several plants of the cactaceous genus Opuntia, American plants consisting of fleshy, leafless, usually flattened, and often prickly joints inserted upon each other. The sessile flowers have many petals and numerous stamens. The edible fruit is a large pe…

youth; hence, full health, strength, or beauty; perfection. "Cut off in their prime." Eustace. "The prime of youth." Dryden.