1896.] NATURAL SCIENCES OF PHILADELPHIA. 333 



corneous-brown. Aperture dark hroxvn tvithin ; peristome white, 

 less heavy ; parietal callus thin, translucent ; parietal tooth very 

 small, short. 



Alt. 195, diam. 8J ; alt. of aperture 7 mm. 



Alt. 2H, diam. Si ; alt. of aperture 7 mm. 



Abaco, Bahamas. 



This form at first sight looks extremely different from C. Abacoense, 

 and as we have seen no intermediate examples it may well prove to 

 be a distinct species. However, we consider it best to rank Bendalli 

 as a subspecies, thereby keeping in sight its genetic relationship with 

 the larger form ; this might otherwise be easily overlooked, on 

 account of its maculated coloring, Avhich Avould at first incline one 

 to look to another group of forms for its allies. 



It is named in recognition of the services to science of Mr. Wil- 

 fred Bendall, who has recently published a list of the land snails of 

 the Bahamas. 



Cerion Eleutherse Pilsbry & Vanatta. PI. XI, figs. 19, 20. 



Shell solid and strong ; smoothish above, ribbed below ; color 

 lusterless ; white, with a bluish-purple tint, most obvious around the 

 base, cylindric-tapering, terminating above in a rather long slightly 

 convex-sided cone which passes gradually into the cylindrical por- 

 tion. Apex obtuse ; whorls lOJ to 12? ; nepionic 2J whorls nearly 

 smooth, slightly convex ; following whorls of the cone smoothish to 

 the naked eye, showing rather irregularly spaced wrinkles under the 

 lens, fiat, with seam-like sutures, not in the least impressed. Latter 

 4 whorls approaching equality in diameter, subregularly and rather 

 strongly costate (at least the lower two whorls), the last one with 

 about 27 (22 to 30) ribs, which do not split or double on the base, 

 although sometimes there are some riblets intercalated there. 



Aperture about one-third the shell's length, oblong or rounded, 

 obliquely truncate above, liver-brown within. Peristome white, re- 

 flexed, the outer edge sharp and somewhat recurved, inner edge 

 built Jar forward, especially below, bevelled outwardly ; parietal 

 callus either very thin or thick. Axial fold variable in prominence ; 

 parietal tooth very strong, long. Axis perforate, with a rather 

 short rimation. 



Alt. 29, diam. IH ; alt. of aperture 11 mm. 



Alt. 33, diam. 11 ; alt. of aperture 11 mm. 



Alt. 23?, diam. 11 ; alt. of aperture 9 mm. 



Eleuthera, Bahamas. 



