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A toothed delphinoid cetacean, of the genus Grampus, esp. G. griseus of Europe and America, which is valued for its oil. It grows to be fifteen to twenty feet long; its color is gray with white streaks. Called also cowfish. The California grampus is G. Stearnsii.

e, in the Vocabulary. -- Green gland (Zoöl.), one of a pair of large green glands in Crustacea, supposed to serve as kidneys. They have their outlets at the bases of the larger antennæ. -- Green hand, a novice. [Colloq.] -- Green heart (Bot.), the wood of a lauraceous tree found in the West Indies and in South Americ…

A small marine isopod crustacean (Limnoria lignorum or L. terebrans), which burrows into and rapidly destroys submerged timber, such as the piles of wharves, both in Europe and America.

A genus of cretaceous fossil shells allied to the oyster.

ages, sap receptacles extending through the parenchyma of certain plants (Amygdalaceæ, Cactaceæ, etc.), and affording passage for gum. -- Gum pot, a varnish maker's utensil for melting gum and mixing other ingredients. -- Gum resin, the milky juice of a plant solidified by exposure to air; one of certain inspissated…

erican herbivorous dinosaur of great size, allied to the iguanodon. It is found in the Cretaceous formation.

A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.

A digestive gland in Crustacea, Mollusca, etc., usually called the liver, but different from the liver of vertebrates.

r another. [Obs.] "We rest your hermits." Shak. Hermit crab (Zoöl.), a marine decapod crustacean of the family Paguridæ. The species are numerous, and belong to many genera. Called also soldier crab. The hermit crabs usually occupy the dead shells of various univalve mollusks. See Illust. of Commensal. -- Hermit thrus…

A genus of large, extinct, wingless birds from the Cretaceous deposits of Kansas, belonging to the Odontornithes. They had teeth, and were essentially carnivorous swimming ostriches. Several species are known. See Illust. in Append.

A genus of marine decapod crustaceans, which burrow rapidly in the sand by pushing themselves backward; -- called also bait bug. See Illust. under Anomura.

aped under valve, with a flattish upper valve or lid. Hippurites are found only in the Cretaceous rocks.

A division of phyllopod Crustacea, including those that are entirely covered by a bivalve shell.

A genus of decapod Crustacea, including the common lobsters. -- Hom"a*roid, a.

The lower lip of trilobites, crustaceans, etc.

A division of copepod crustaceans, including numerous species parasitic on fishes.

An extinct genus of toothed birds found in the American Cretaceous formation. It is remarkable for having biconcave vertebræ, and sharp, conical teeth set in sockets. Its wings were well developed. It is the type of the order Odontotormæ.

allied forms; -- called also Ichthyopterygia. They have not been found later than the Cretaceous period.

s, varying in length from ten to thirty feet, are known from the Liassic, Oölitic, and Cretaceous formations.

arge, fossil, bivalve shells,allied to the mussels. The genus is characteristic of the Cretaceous period.