The Round-mouthed Snails 



The Beautiful Cyclostoma (C. pulchra. Gray) has three 

 exquisitely fluted coils that flare into a wide rufile about the 

 circular aperture. The apex is elevated, the. pit deep and wide. 

 Colour, pale brown, obscurely spotted. This is one of the most 

 beautiful West Indian species. Diameter, i inch or more. 



Habitat. — Jamaica. 



Genus CHONDROPOMA, Pfr. 



Shell oblong, turreted, of few rounded whorls, aperture 

 rounded;.lip flaring; operculum spiral, flat; nucleus eccentric. 



Our American species, C. dentata, Say, is very plain, 

 beside the more highly ornamented Cuban species. It is finely 

 cancellated, yellow with brownish streaks both ways, and the 

 slender spire is usually broken off. The mollusk has a curious 

 habit of spinning a thread by which it hangs suspended from 

 a leaf or other convenient object, with its operculum closed tight. 

 It is very quick of motion, gliding along on its foot, and advancing 

 the shell by a series of jerks. Length, \ inch. 



Habitat. — Southern Florida. 



C. Shuttleworthi, Pfr., is variable in markings, but always 

 brown on a pale ground. The rounded whorls are covered with 

 close spiral strise, and the lip is bordered with a wavy frill, rayed 

 with brown. Length, i inch. 



Habitat. — Cuba. 



Genus CYCLOTUS, Guilding 



Shell depressed, turbinated, elegantly convoluted, broadly 

 pitted, and enveloped in an epidermis of brown, usually banded; 

 mouth small, circular; lip continuous, simple, sometimes flaring. 

 Tropical. The finest species are in the New World. 



The Giant Cyclotus (C giganteus, Gray) has a flattened spire 

 of rounded whorls, the rich chestnut surface banded with a darker 

 brown and stained with olive. The flaring lip and circular, 

 spiral operculum are white, tinged with brown. This handsome 

 snail frequents the woods of Panama. Diameter, 2 inches. 



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