362 



ovata, antice rotundata ; columella angusta, nigrescente. Long, f ; 

 lat. ^ poll. Inhabits Cany Fork, Tennessee. 



The peculiar dark, purplish-black color of this prettily sculp- 

 tured species is a very decisive character. It is allied to M. 

 decora and M. costulata. 



Melania elata. T. tenui, gracili, elongata, pallide cornea 

 ad suturam pallidiori; anfr. 8-9 planiusculi, supernis carinatis; 

 apertura ovata antice effusa ; columella tenui. Long. 1 ; lat. -^^ 

 poll. Inhabits Maumee River, Ohio. 



A plain, slender species of an unusually pale color. The 

 whorls vary much in obliquity and convexity. It is similar in 

 many respects to M. bicolorata. 



Melania napella. T. parva, ovata, acuminata, Isevi, dilute 

 cornea ; anfr. 7, supernis conicis et ad suturam carinatis, antico 

 immodice ventricoso ; apertura ^ long, testae, anguste lunata, 

 labro antice dilatato, postice baud sinuate. Long. J- ; lat. ^ poll. 

 Inhabits Ohio. 



A pale, rather singular species, from its bulbous form. Some 

 immature specimens of M. simplex are often much like it. 



Melania cuspidata. T, parva, curta, ovata, acuminata, laevi, 

 ex olivaceo purpurascente ad suturam pallida ; anfr. 6 convexis 

 interdum tabulatis, apicalibus carinatis, ultimo ventricoso ; aper- 

 tura ampla dimidiam longitud. testae adequante ; labro antice 

 dilatato, postice vix sinuate. Long. |- ; lat. -^^ poll. Inhabits 

 Maumee River, Ohio. 



Allied to M. napella, having the same peculiar bulbous form 

 and produced tip. It is, however, much more elongated. It 

 resembles M. Warderiana^ Lea. 



Melania inemta. T. elongata, turrita, detruncata, inornata, 

 fusco-viridi ; anfr. 3-4 convexiusculis, ultimo gibboso postice 

 constricto ; sutura impressa ; apertura late lunata, vix effusa, 

 labro fusco. Long, f ; lat. f poll. Inhabits Virginia. 



Possibly this may be a largely truncated specimen of M. Vir- 

 ginica, which it resembles in its aperture. The form of the 

 ultimate whorl is unusual. 



Melania plebejus. T. parva, solidiuscula, inornata, detrun- 



