361 



A simple species like 31. simplex and M. gracilis. Its pale 

 sutural region is perhaps its most obvious character. 



Melania pulchella. T. parvula, tenui, elongato-conica, 

 fusco-cornea, fusco fasciata ; spira conica, anfr. 7-8 convexius- 

 culis ; apertura- ampla, ^ long, testae, elongato-ovata. Long. -^^; 

 lat. ^ poll. Inhabits ? 



A pretty species, ornamented by dark, rather broad bands, 

 somewhat like M. Taitana and some varieties of M. Virginica. 



Melania tracta. T. ovato-lanceolata, gracili, fusco-viridi, 

 longitudinaliter varicoso-plicata et filis tenuibus cincta ; anfr. 7 

 convexiusculis ; sutura profunda ; apertura contorta, angusta, 

 ovali, labro antice product© ; columella alba ; fauce livida. 

 Long. 1|- ; lat. f poll. Inhabits Ohio. 



General form like M. Virginica, but with the whorls more 

 rounded. The delicate raised lines which surround it are among 

 its more obvious characters. 



Melania bicolorata. T. parva, exili, fusco-olivacea ad 

 suturam flavescente ; anfr. 6-7 planiusculis, supernis filis tenui- 

 bus cinctis, ultimo antice gibboso ; apertura ovata, labro antice 

 dilatato, postice sinuate; fauce livescente. Long, f; lat. ^ poll. 

 Inhabits Camp Creek, near Madison, Indiana. 



An unadorned species, rather remarkable for its elongated, 

 slender form, and well-rounded whorls. It comes near 31. exilis 

 and 31. terehralis, having the tip threaded as in those species. 



Melania brevispira. T. parva, elongata, ovata, truncata, 

 solidula,inornata, nitida, fusco-viridi ad suturam pallidiori ; anfr. 

 4-5 convexis, interdum ad suturam subito declivibus ; apertura 

 ovata, labro antice vix dilatato, postice sinuato. Long, f ; lat. 

 y^o poll. Inhabits Ohio. 



-A small, plain species ; with no very obvious distinctive marks. 

 It is allied to 31. plehejus, but is rather more slender. It is 

 usually much eroded. 



Melania coracina. T. parva, tenui, conico-turrita, picea, 

 nitida ; anf. 6-7, supernis planulatis, longitud. ordinatim costato- 

 plicatis, ultimo venlricoso, sub-angulato ; apertura rotundato- 



