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An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; -- called also Sauropterygia.

Any marine gastropod belonging to Pleurotoma, and ether allied genera of the family Pleurotmidæ. The species are very numerous, especially in tropical seas. The outer lip has usually a posterior notch or slit.

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

Any grallatorial bird allied to, or resembling, the true plovers, as the crab plover (Dromas ardeola); the American upland, plover (Bartramia longicauda); and other species of sandpipers.

The division of Siphonophora which includes the Physalia and allied genera; -- called also Pneumatophoræ.

The American redhead, which is closely allied to the European poachard. Red-crested poachard (Zoöl.), an Old World duck (Branta rufina). -- Scaup poachard, the scaup duck. -- Tufted poachard, a scaup duck (Aythya, or Fuligula cristata), native of Europe and Asia.

Any species of Podura or allied genera. -- a.

The zorilla. The name is also applied to other allied species.

oid 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.

n kinds are air-breathing snails (Pulmonifera) belonging to Limnæa, Physa, Planorbis, and allied genera. The operculated species are pectinibranchs, belonging to Melantho, Valvata, and various other genera. -- Pond spice (Bot.), an American shrub (Tetranthera geniculata) of the Laurel family, with small oval leaves, a…

A red African antelope (Kobus Vardoni) allied to the water buck.

A bird of the Western United States (Phalænoptilus Nutalli) allied to the whip-poor-will.

in clay. See under Clay. -- Porcelain crab (Zoöl.), any crab of the genus Porcellana and allied genera (family Porcellanidæ). They have a smooth, polished carapace. -- Porcelain jasper. (Min.) See Porcelanite. -- Porcelain printing, the transferring of an impression of an engraving to porcelain. -- Porcelain shell…

n 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, and snuffer.…

bilobed leaves. [West Indies] -- Sweet potato (Bot.), a climbing plant (Ipomoea Balatas) allied to the morning-glory. Its farinaceous tubers have a sweetish taste, and are used, when cooked, for food. It is probably a native of Brazil, but is cultivated extensively in the warmer parts of every continent, and even as f…

Any small kangaroo belonging to Hypsiprymnus, Bettongia, and allied genera, native of Australia and Tasmania. Called also kangaroo rat.

Western prairies. -- Prairie dog (Zoöl.), a small American rodent (Cynomys Ludovicianus) allied to the marmots. It inhabits the plains west of the Mississippi. The prairie dogs burrow in the ground in large warrens, and have a sharp bark like that of a dog. Called also prairie marmot. -- Prairie grouse. Same as Prair…

Any bird of the Old World genus Glareola, or family Glareolidæ, allied to the plovers. They have long, pointed wings and a forked tail.

any one of several species of South American burrowing rodents belonging to Ctenomys and allied genera. The hair is usually intermingled with sharp spines.

An early flowering plant of the genus Primula (P. vulgaris) closely allied to the cowslip. There are several varieties, as the white-, the red-, the yellow-flowered, etc. Formerly called also primerole, primerolles.