1893.] NATURAL SCIENCES OF PHILADELPHIA. 251 



a garden of New Philadelphia, all living, while at other places in 

 and around the city they were of the ordinary appearance. I have 

 seen the same form from other localities, yet it seems not to 

 represent a true variety. 



V. pulchella may be mistaken, when young or immature, for 

 Hyal. minuscula Binn., in North America only, having the same lip- 

 less, glassy shell and the same color of the soft parts. Yet the 

 somewhat experienced collector will know the latter by the com- 

 paratively smaller, more gradually increasing (and so more 

 numerous) whorls, the generally stronger striation and the umbili- 

 cus being wider from beginning. On the Old Continent, there is 

 no land snail, as far as I know, which our species closely 

 resembles, even when immature, except other species of Vallonia. 



V. pulchella var. enniensis Gredl. Tirol's Conchylien, 1856. 



A form with strong, rib-like striae, but without membranous ribs. 

 It has been found in Tirol, at Neumarkt, Hall and Botzen. I 

 found two specimens, evidently of this form mixed in a lot of V. 

 costata from Grasse, France (Acad. Coll.). The stride are very 

 strong, but the other characters of the shell are those of V. pulchella. 



V. pulchella var. hispanica, n. 



Shell small, diam. maj. 2*0-2 , 3, averaging 2T, pale horn colored 

 or whitish ; whorls 3— 3r», the last little predominating, somewhat 

 expanding toward the aperture; the latter f circular; peristome 

 moderately everted, with a moderately strong lip, little or not 

 thinner at the ends ; spire little elevated, in some examples 

 almost flat; umbilicus as in typical pulchella ; surface strongly, 

 rather regularly striate, rather ribbed (ribs without membranes) ; 

 nucleus with rather strong revolving lines. Spain (no special hab- 

 itat), ten specimens in the Nat. Mus. Coll. Anatomical examina- 

 tion would be very desirable and possibly might show the form to 

 be a distinct species. Resembles the preceding variety. 



V. pulchella var. persica Rosen. Nachrichtsbl. D. Mai. Ges. 1892, p. 123. ' " 



Differs from the type by the last whorl descending to the aper- 

 ture, with a flat [_ piano], widely expanded peristome. Hab. 

 Schamhala, Prov. Chorassan, Persia. 



I have seen no specimens, but think this might be a form distinct 

 from pulchella. 



17 Beitrage zur Kenntniss der Molluskenfauna Transkaspiens und Chorassans, 

 von Baron Otto Rosen, Ashabad. 



