BULIMULUS-ORTHOTOMIUM. 137 



Mus., xvii, 1894, p. 164. Bulimulus (Globulm} sufflatus MABILLE, 

 Bull. Soc. Philomath, de Paris, (8), vii, p. 69 (1895). 



Var. insularis Cooper. 



" Found only by Mr. Bryant on one point of Espiritu Santo Is- 

 land, where he got six dead chalky specimens, apparently fossil 

 though only seen on top of the ground. Compared to Gould's type 

 they are not so swollen (while others we have are much more so), 

 but they closely resemble some from toward La Paz in form, being 

 more narrowly ovate, but smaller. A half-grown one is as thin as 

 many of them closely resembling a large E. pilula from Point Arena, 

 but the full-grown are thickened more than any of either form, the 

 mouths of two having a heavy callous connecting the lips, and in 

 one developing a blunt tooth on the inner wall. (This excessive 

 thickening is also found in a var. of Helix areolata from the same 

 island). The umbilicus is like that of B. sufflatus of same size, and 

 also as in large B. pilula. It is 1'20 inch long, 0'70 wide, mouth 

 0.65 long, 0*50 wide, in most thickened specimens ; no distinct ex- 

 pansion of lip, but its margin is thickened." (Cooper}. 



Var. chinchensis Cooper. PI. 25, fig. 63. 



" Approach nearer to B. pilula, and are evidently mature, with 

 thickened lips." (Cooper}. 



El Chinche Mts., 2000 ft. alt. 



B. RECOGNITUS J. Mabille. 



Shell ovate-globose, rather thin, solid, covered-perforate ; white 

 under a thin, deciduous rufescent epidermis ; coarsely and irregu- 

 larly costulate-striate ; apex subobtuse, regularly costulate, shining. 

 Whorls 5, convex, regularly and rather rapidly increasing, separated 

 by an impressed, obscurely crenulated suture ; last whorl large, f the 

 alt. of the shell, globulose, inflated, at the base slightly attenuated, 

 slowly descending in front. Aperture vertical, ovate, a little taper- 

 ing and narrowed above ; peristome simple, unexpanded, the mar- 

 gins joined by a thin, glossy callus ; outer lip with a long, decided 

 arch, basal curved, columellar shorter, emitting a thin, shining 

 lamina, impressed at its origin and nearly closing the perforation. 

 Columella nearly straight, a little thickened, slightly truncate at 

 base. Alt. 27, greatest diam. 17 mill.; aperture with peristome 16 

 mill, long, 12 wide. (Mabille). 



Lower California (Diguet). 



