200 HELIX-CAM^ENA. 



H. HAHNI Mabille. PL 24, figs. 76, 77 ; pi. 65, fig. 88. 



Shell sinistral, narrowly umbilicate, depressed, solid, opaque, rich 

 chestnut brown ; surface scarcely shining, covered with a dense 

 granulation, very minute and nearly obsolete on the whorls of spire, 

 coarser on the last whorl, quite coarse beneath ; spire whorls with 

 low, irregular radiating folds, broken into low tubercles at the 

 periphery of penultimate whorl ; growth-lines coarse and irregular 

 on the last whorl ; whorls 5, the upper ones subplanulate, sutures 

 not impressed, the last whorl convex above, the suture becoming 

 impressed ; periphery carinated, base convex, whorl not deflexed at 

 aperture ; aperture oblique, lunar, livid inside ; peristome thick, 

 expanded all around, purplish flesh-colored, terminations not con- 

 verging, columellar margin considerably dilated, half concealing 

 the umbilicus ; parietal wall with a very thin, flesh-colored callous. 



Alt. 20, diam. maj. 45, min. 40 mill. 



Alt. 28, diam. maj. 45, min. 39 mill. Width of umbilicus 3 mill, 

 (specimen.) 



Tonquin. 



H. hahni MABILLE, Moll. Tonk. diagn., p. 3 (May, 1887) ; Bull. 

 Soc. Mai. France, 1887, p. 82, t. 4, f. 9, IQ. Camcena Hahni ANCEY, 

 Le Naturaliste (Pans) 1888, p. 71. Ariophanta Broti D'HAM. & 

 DAUTZ., Journ. de Conchyl. 1887, p. 214, t. 8, f. 1. 



Differs from H. cicatricosa in being more depressed, more cariiia- 

 ted, with deeper color and different sculpture. I am indebted to 

 L'ABBE A. VATHELET for the specimen described above. The first 

 given measurements are from Mabille's description. 



A figure of the synonymous A. Broti is given on pi. 65, fig. 88. 



H. SUBGIBBERA Mollendorff. PI. 25, figs. 89, 90. 



Shell dextral, umbilicated, subdepressed-globose, solid, sculptured 

 with transverse close, rough striae and wrinkles, which are obliquely 

 descending on the upper surface, concentric on the base. Color pale 

 brown, painted with numerous brown bands, a wider blackish-chest- 

 nut one at periphery. Whorls 5i, the upper subplane, the follow- 

 ing convex, the last subacutely angled at the periphery, base much 

 inflated, almost gibbous, compressed and somewhat angled around 

 the umbilicus. Aperture diagonal, lunate-rounded, peristome nar- 

 rowly expanded, a little reflexed, margins joined by a thin callus ; 



