342 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



40907. One specimen, No. 1256, Mus. Cat. 40908, was collected at Pe- 

 tropavlovsk, Kamchatka. 



Vitrina exilis Morelet. 



Found at Bering Island ; collectors' numbers, 1051 and 1509. Mus. 

 Cat. 40909. Abundant on both sides of Bering Sea and on its islands. 



Hyalina radiatula Alder. 



H. electrina Gould ; not H. pura Alder, from types. 



Found at Bering Island; collector's number, 1518. Mus. Cat. 40910. 

 The H. mridida of Menke, published in the same year, is a greenish and 

 rare mountain variety of this species ; it seems, therefore, better to fol- 

 low Jeffreys in preserving Alder's name, which was given to the typical 

 form, for that, and to reserve Meuke's name for the variety it was ap- 

 plied to, especially as the typical and normal form is not viridulous. 



Conulus pupulus Gould. 



This variety of the ubiquitous C.fulvus was described by Dr. Gould 

 from Petropavlovsk, and has been collected there by several travelers, 

 including Dr. William Stimpson and the writer. It was found by Dr. 

 Stejneger on Bering Island. Collectors' numbers, 1516 and 1517. Mus. 

 Cat. 40911. 



Patula floccula Morelet. 



Helix flocculus Morelet. Jouru.de Conchyl., vii, p. 8, July, 1858. 

 Helix pauper GouLD. Proc. Bost. Soc. Nat. Hist., vi, p. 423, Feb., 1859. 

 Helix {Patula) ruderata, var. opulens Wesxerluxd. Nacbr. d. Deutscb. Mai. 

 Ges., 1883, p. 50. 



Helix striatellci Awt\io\\^ and its variety Cronkhitei Newcomb are widely 

 distributed on the American side of Bering Sea and over the Aleutian 

 Islands, in which area the present form has not been found. The writer 

 and others have confounded the two until recently, when the writer 

 has had an opportunity of making a careful study of by far the best 

 c:xisting series, including those collected by Dr. Stejneger. It is found 

 on the Kamchatkan Peninsula and on Bering Island. Collectors' num- 

 bers, 1051, 1514, Mus. Cat. 40912. It was also collected at Bering Island 

 by the Vega expedition. From the specimens of ruderata seen by the 

 writer it seems separated, although a larger series might connect them. 

 It is quite distinct from striatella. The colored flam mules from which 

 it takes its name, and which give it, when living, the aspect of a very 

 diminutive -5". alternata Say, disappear in dead shells and in shells 

 which were collected living but have been long kept in cabinets. Speci- 

 mens collected by the writer at Petropavlovsk in 1865, and which showed 

 these markings vividlj-, are now entirely destitute of them. Even those 

 kept in alcohol have lost them entirely. Nothing of the sort has been 

 observed in the American H. striatella. Specimens, collector's number 

 1256, Mus. Cat. 40913, were also collected at Petropavlovsk, Kamchatka. 



