136 PUPILLA. 



M. Mermod concludes that ' ' the specific value of P. alpicola, 

 halleriana, madida and muscorum var. praten^is seems to me 

 very doubtful. I think that, without risk of gross error, all 

 these names can be put in synonymy and considered to form 

 simply a variety of P. muscorum.^' The synonymy, in this 

 view, will stand as follows: 



PupiLLA MUSCORUM var. CUPA (Jan). 



Pupa alpicola Charp. [Vol. 26, p. 183]. 



Pupa halleriana Charp. [Vol. 26, p. 185], 



Pupa madida Gredler [Vol. 26, p. 184] . 



Pupa muscorum var. pratensis Clessin [Vol. 26, p. 178] . 



PuPiLLA STERRi (Voith). Vol. 26, p. 186. 



According to Mermod (i^. c, p. 581) this differs from P. cupa, 

 with which it was synonymized by 0. Boettger, by the strong 

 epidermal striae, often anastomosing, the excentric aperture 

 with a strong cervical crest, and the more widely open um- 

 bilicus. See also, Manual, vol. 27, pp. 253, 254. 



PupiLLA PSEUDOCYLiNDRiCA (Ping & Yen). Plate 24, fig. 10. 



''Shell small, cylindrical in outline, shallowly umbilicated. 

 Apex rounded, fairly broad. Whorls 6i/2- First whorl widen- 

 ing not so much as the second, which almost equals any of the 

 following whorls in width. Then third, fourth, fifth, even 

 sixth, which constitutes the body-whorl, all equal to one an- 

 other in width, thus making the shell cylindrical. Apex and 

 first whorl smooth, and surface of each of the following whorls 

 marked with very fine oblique striae. Surface of each whorl 

 moderately convex. Suture between each two whorls fairly 

 deep. Aperture ovoid. Outer and inner lips continuous and 

 somewhat expanded, with a thin callus on the parietal surface, 

 which bears a very small, inconspicuous tooth. Umbilicus 

 shallow and slit-like. Along the outer lip the peristomal 

 region thickened, forming a blunt keel. The general color is 

 yellowish white, and the apical region and the lips are purely 

 white" (Ping and Yen). 



Alt. 4 mm., diam. 1.7 mm., length aperture 1 mm., width 

 0.9 mm. 



