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Any one of several species of marine gastropods belonging to Velutina and allied genera.

Any one of numerous species of siliceous fossil sponges belonging to Ventriculites and allied genera, characteristic of the Cretaceous period.

tals of rutile. -- Venus's looking-glass (Bot.), an annual plant of the genus Specularia allied to the bellflower; -- also called lady's looking- glass. -- Venus's navelwort (Bot.), any one of several species of Omphalodes, low boraginaceous herbs with small blue or white flowers. -- Venus's pride (Bot.), an old nam…

A small yellow-headed bird (Auriparus flaviceps) of Lower California, allied to the titmice; -- called also goldtit.

y one of numerous species of club-shaped, compound Alcyonaria belonging to Veretillum and allied genera, of the tribe Pennatulacea. The whole colony can move about as if it were a simple animal.

including the parasitic worms, or helminths, together with the nemerteans, annelids, and allied groups. By some writers the branchiopods, the bryzoans, and the tunicates are also included. The name was used in a still wider sense by Linnæus and his followers.

Any one of many species of marine gastropods belonging to Vermetus and allied genera, of the family Vermetidæ. Their shells are regularly spiral when young, but later in life the whorls become separate, and the shell is often irregularly bent and contorted like a worm tube.

Any one of numerous species of marine Bryozoa belonging to Vesicularia and allied genera. They have delicate tubular cells attached in clusters to slender flexible stems.

cluding the common insectivorous bats of America and Europe, belonging to Vespertilio and allied genera. They lack a nose membrane.

A South American mammal (Auchenia vicunna) native of the elevated plains of the Andes, allied to the llama but smaller. It has a thick coat of very fine reddish brown wool, and long, pendent white hair on the breast and belly. It is hunted for its wool and flesh.

d. -- Vine forester (Zoöl.), any one of several species of moths belonging to Alypia and allied genera, whose larvæ feed on the leaves of the grapevine. -- Vine fretter (Zoöl.), a plant louse, esp. the phylloxera that injuries the grapevine. -- Vine grub (Zoöl.), any one of numerous species of insect larvæ that are…

umerous species of small violet-colored butterflies belonging to Lycæna, or Rusticus, and allied genera.

Any one of numerous species of American singing birds belonging to Vireo and allied genera of the family Vireonidæ. In many of the species the back is greenish, or olive-colored. Called also greenlet.

Any one of numerous species of long, slender Alcyonaria belonging to Virgularia and allied genera of the family Virgularidæ. These corals are allied to the sea-pens, but have a long rodlike rhachis inclosing a slender, round or square, calcareous axis. The polyps are arranged in transverse rows or clusters along each s…

A large burrowing South American rodent (Lagostomus trichodactylus) allied to the chinchillas, but much larger. Its fur is soft and rather long, mottled gray above, white or yellowish white beneath. There is a white band across the muzzle, and a dark band on each cheek. It inhabits grassy plains, and is noted for its e…

erous species of operculated fresh-water gastropods belonging to Viviparus, Melantho, and allied genera. Their young, when born, have a well-developed spiral shell.

Any one of numerous species of micelike rodents belonging to Arvicola and allied genera of the subfamily Arvicolinæ. They have a thick head, short ears, and a short hairy tail.

Any one of numerous species of large, handsome marine gastropods belonging to Voluta and allied genera.

Any one of numerous species of small Turbellaria belonging to Vortex and allied genera. See Illustration in Appendix. Vortex atom (Chem.), a hypothetical ring-shaped mass of elementary matter in continuous vortical motion. It is conveniently regarded in certain mathematical speculations as the typical form and structur…

Any one of many species of Old World singing birds belonging to Motacilla and several allied genera of the family Motacillidæ. They have the habit of constantly jerking their long tails up and down, whence the name. Field wagtail, any one of several species of wagtails of the genus Budytes having the tail shorter, the…