110 UNIVALVES. TURBO. 



bi and Buccina, by their having a circular or orbicular 

 mouth. 



Of the tapering or elongated Turbines may be men- 

 tioned the T. imbricatus, T. replicatus, T. acutangulus, 

 T. duplicatus, and T. terebra, which are the principals of 

 the division. 



The T. ulvae is found adhering to the ulva lactuca. 

 The T. perversus has its whirls contrary, and dwells 

 among moss on old walls in most parts of Europe, as does 

 also the T. muscorum ; and the T. tumidus is often found 

 in the woods of England. Among the fresh- water spe- 

 cies the T. nautileus stands conspicuous; it is often affix- 

 ed to plants in stagnant waters. 



The species from the ocean are principally from the 

 South seas ; some are from the American and African 

 oceans, and the Indian and Northern seas; and several 

 species are to be met with in the Mediterranean and 

 European seas. 



TVRBO.— Wreath. 



A. — Pillar margin of the aperture dilated and imper- 

 forated. 



Obtusatus — Blunted. *Rudis — Sordid. 



Neritoides — Nerite-shaped. * Lineatus — Black-streaked. 



*Littoreus — Periwinkle. Muricatus — Prickly. 



*Tumidus — Swelled. Lituus — Crosier. 



Punctulatus — Dotted. 



B. — Solid, imperforated. 



*Cimex — Bug. *Fasciatus — Banded. 



*Pullus — Painted. Personatus — Convex. 



Piilcher — Beauty. Phasianus — Pheasant, 



