16 THE NAUTILUS. 



Polygyra (Stenotrema) stenotrema depilata n. v. 



Globose conic, the spire mnfh elevated; surface completely lacking 

 hairs or their scars, showing sparse oblique short wrinkles above 

 (hardly seen without a high power lens), the base with the luster of 

 silk, or like the bloom on a grape, and showing indistinct spiral 

 sculpture. Parietal tooth smaller than in the type, further from the 

 basal lip, and not connected by a raised callus with the upper ter- 

 mination of the lip. Notch of basal lip rather shallow and wide. 

 Alt. 8, diam. 10 mm. 



Thunder-head Mountain (Mrs. Andrews), with typical P. steno- 

 trema of the usual depressed-globose and hirsute form. 



A NEW VARIETY OF OCINEBRA CIRCUMTEXTA STEARNS. 



BY E. R. C. STEARNS. 



A very pretty variety of Ocinebra eircumtexta has recently been 

 detected on the coast of Los Angeles County, by some of the local 

 collectors. It is of a pale orange color ; the bands, which in the 

 typical form are dark, sometimes almost black, in the variety here- 

 in described are of a deeper orange. I have named it var. niir<nit!ii. 



It is noteworthy, the prevalence of the orange hue, pale or dark, 

 in many of the species of Ocinebra of the west coast. 



This color is frequently met with in various shades in Purpura 

 crispata of the Puget Sound and Alaska region. 



Los Angeles, Cal., May 10, 1895. 



NORTH AMERICAN SPECIES OF VALLONIA. 1 



BY DE. V. STERKI. 



Private inquiries and publications appear to make it desirable to 

 give a few notes on our Vallonia, in this place. As far as known, 

 at present, there are the following species in North America: 



Group of V. pulchella. Not ribbed ; peristome with strong lip. 



1. V. piilcht'l/H Mull. (= V. niinuta Say), North America, east of 

 the Rocky Mountains ; west of them at least scarce. All Europe, 

 and adjoining parts of Asia and Africa. 



'2. V. rxtentri.cn Sterki. Northeastern North America from 

 Maine and Quebec to Washington, D. C. All Europe. It is con- 

 stantly distinct from T. pti/<-lie//n, and, when once known, can not 



'C'onf. Observations on Vallonia, in Proe. Ac. Xat. So, I'liiln., IS'A p. 234. 



