HELIX-AMPELITA. 21 



In the coloration of chestnut bands on a light ground, and the 

 dark umbilicus, it is like H. subsepulchralis, but the form is more 

 depressed and the parietal callus light, not strong and opaque as in 

 that species. Pfeiffer mentions a variety in which the chestnut bands 

 are much narrower. 



H. EURYCHTLA Crosse & Fischer. 



Shell broadly and subperspectively umbilicated, depressed, sub- 

 lenticular, rather thin, but somewhat solid, transversely obliquely 

 rugate-striate, very delicately granulate-roughened, scarcely shining, 

 brownish under a papery epidermis, blackish-brown, partly dull whit- 

 ish, darker at the external margin ; spire nearly plane, apex scarcely 

 prominent ; suture profoundly impressed ; whorls 4?, rather rapidly 

 widening, the embryonic H plane, slightly shining, brown, the 

 following a trifle convex, a little above the middle deflexed, sub- 

 concave ; the last whorl rapidly descending, then a little ascending, 

 obtusely subangular above the middle, the angle becoming evanes- 

 cent, base subplanate ; umbilical area deep chestnut-brown, encircled 

 by a rather prominent whitish narrow zone. Aperture large, very 

 oblique, almost horizontal, elongate-lunate, livid-brown, paler inside ; 

 peristome very broadly reflexed, dull white, livid brown inside, the 

 margins converging, joined by a very thin hyaline callous, colu- 

 mellar margin very short, partly covering the umbilicus, middle 

 slightly gibbous, and slightly subdentate, outer margin very broad, 

 subdentate in the middle and a little scrobiculate outside. ( (7. & F.) 



Alt. 23, greater diam. 64, lesser 48 mill. 



Madagascar. 



H. (Ampelita) eurychila C. & F., Journ. de Conchyl. 1882, p. 

 324. 



Variety b. smaller, paler, dull brownish-white under a fulvous 

 epidermis ; aperture dull brownish-white inside. Alt. 21, greater 

 diam. 60, lesser 46 mill. 



An unfigured species allied to H. sepulchralis, Sganziniana fune- 

 bris and water si, but larger, scarcely shining, and said to be readily 

 distinguishable. 



H. SGANZINIANA Crosse and Fischer. 



Shell broadly and perspectively umbilicated, depressed, sublenticu- 

 lar, rather thin but solid, with distant suboblique stride, very 

 delicately granulose-roughened, pale olive-brown, darker at external 

 margin ; spire almost completely plane, apex scarcely projecting ; 



