6 LIMNEA CATASCOPIUM. 



? LEPTOLIMNEA, Sw. Nearly cylindrical; spire thick, 

 lengthened; aperture small. 



L. elongata. Sow. gen. fig. 6. 



BULIMNEA, HAL. Shell thick in texture, inflated, lip not 

 expanded. 



B. megasoma, pi. 3, fig. 1 3. 



JlcELLA, HAL. Shell slender, whirls very oblique, aper- 

 ture expanded. Probably the same as Leptolimnea. 

 A. gracilis, Jay's catalogue, pi. 1, fig. 10. 



LIMNEA CATASCOPIUM, Say. 



PLATE 1. 



L. testa conica, tenui, ochracea; anfractibus quinis 

 convexis: suturii excavata, spira acuta: ultimo anfractu 

 ventricoso, apertura ovata. 



SYNONYMS AND REFERENCES. 



L. CATASCOPIUM) SAY. Nich. Encyc. (Am. ed.) art. 



Conch., pi. ii. fig. 3. Am. Conchology, pi. Iv. fig. 2. 

 L. PiNGUisI SAY. Jour. Acad. Nat. Sci., vol. ii. p. 123. 

 L. CORNEA, VAL. Rec. d'Obs. de Zoologie, &c., par 



Humboldt et Bonpland, vol. ii. p. 251. 

 L. VIRGINIANAI LAM., vol. viii. p. 411. DESK. Encyc. 



meth. vers., vol. ii. p. 362, No. 21. 

 L. GATASCOPIUM, GOULD. Invert, of Mass., 223. 



