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er of the tree. [Written also teek.] African teak, a tree (Oldfieldia Africana) of Sierra Leone; also, its very heavy and durable wood; -- called also African oak. -- New Zeland teak, a large tree (Vitex littoralis) of New Zeland; also, its hard, durable timber.

Any one of numerous species of small, conical fossil shells found in Paleozoic rocks. They are supposed to be pteropods.

he dorsal portion of an arthromere or somite of an articulate animal. See Illust. under Coleoptera.

A gobioid fish (Eleotris gyrinus) of the Southern United States; -- called also sleeper.

A division of Coleoptera having, apparently, only four tarsal joints, one joint being rudimentary.

ecame master of all Prussia, Livonia, and Pomerania. In its decay it was abolished by Napoleon; but it has been revived as an honorary order.

of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of Coleoptera.

The fourth joint of the leg of an insect. See Illust. under Coleoptera, and under Hexapoda.

ibial spur (Zoöl.), a spine frequently borne on the tibia of insects. See Illust. under Coleoptera.

colors. The larvæ are called woolly bears. -- Tiger shark (Zoöl.), a voracious shark (Galeocerdo maculatus or tigrinus) more or less barred or spotted with yellow. It is found in both the Atlantic and Indian Ocean. Called also zebra shark. -- Tiger shell (Zoöl.), a large and conspicuously spotted cowrie (Cypræa tigr…

A large, edible, deep-water food fish (Lopholatilus chamæleonticeps) more or less thickly covered with large, round, yellow spots.

A small shark or dogfish (Galeorhinus, or Galeus, galeus), native of Europe, but found also on the coasts of California and Tasmania; -- called also toper, oil shark, miller's dog, and penny dog.

öl.), any one of a group of Old World arboreal lizards (Dendrosauria) comprising the chameleons. -- Tree lobster. (Zoöl.) Same as Tree crab, above. -- Tree louse (Zoöl.), any aphid; a plant louse. -- Tree moss. (Bot.) (a) Any moss or lichen growing on trees. (b) Any species of moss in the form of a miniature tree.…

An amorphous variety of manna obtained from the nests and cocoons of a Syrian coleopterous insect (Larinus maculatus, L. nidificans, etc.) which feeds on the foliage of a variety of thistle. It is used as an article of food, and is called also nest sugar.

Exhibiting trichroism; pleochroic; pleochroism.

ery common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.

A division of Coleoptera including those which have but three joints in the tarsi.

anium dioxide, which crystallizes in the forms of rutile, octahedrite, and brookite. See Pleomorphism.

A semifluid or fluid oleoresin, primarily the exudation of the terebinth, or turpentine, tree (Pistacia Terebinthus), a native of the Mediterranean region. It is also obtained from many coniferous trees, especially species of pine, larch, and fir.

cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.