THE NAUTILUS. . 125 



lamellfe in the palatal wall, yet there is hardly a doubt but that it 

 represents Gould's species. Messrs. Geo. W. & P. B. Webster took 

 much pains, last fall and winter, on their trips in eastern Florida, to 

 secure specimens, but so far did not succeed. Whoever visits the 

 Peninsula should look after it. 



From the whole configuration and especially the lamellte, variolosa 

 appears to be a Vertigo. 

 Vertigo gouldii Binn. 



The true V. gouldii ^ has been collected at Helena, Mont., by Mr. 

 I. B. Elliott, and at Ottawa, Out., by Mr. Geo. AV. Taylor ; from the 

 latter place in 2 somewhat difiering forms. To mention it here, my 

 V. callosa has not been found South of New York, nor west of 

 middle Ohio, so far, to my knowledge, and among hundreds of small 

 Pupidoe collected in Northeastern Ohio, by Mr. A. Pettingell, there 

 was no example of that species. 

 Vertigo binneyana Sterki. 



When this species was first published, ^ I had only 2 examjjles 

 from Helena, Mont., and 2 from Winnipeg, Manitoba, but was 

 satisfied that it is a distinct form Since then I have seen 2 from 

 Glendive, Mont., and one from Albuquerque, N. Mex., the latter 

 differing somewhat from the northern example, but unmistakably 

 ranging with them. Thus it seems to live in the whole region of the 

 western mountains. 



Vertigo boUesiana Morse. 



Specimens have been collected at Sewanee, Tenn., the most 

 southern habitat on the continent I know of, by Mr. Sanderson 

 Smith. But a short time ago I saw, in a number of P. servilis Gld., 

 from St. Croix, W. I., one example of this species, with rather strong 

 lamellre. Whether it was collected with its companions or later 

 accidently mixed in, is hardly to be decided otherwise than by other 

 specimens brought from the West Indies. 



The species is variable. Most examples from Xew York, Ohio, etc., 

 are of good size, regularly striate, and of chestnut color, while those from 

 NcAV England and Canada are generally smaller, lighter in color and 

 scarcely striate or nearly smooth ; the inferior columellar (or " basal") 

 lamella is sometimes quite small or even wanting. A peculiarity of 



1 Sterki, four new Vertigo sp. in Proc. Acad. Phila., 1890. 



2 L. c. 



