THE NAUTILUS. Ill 



Vertigo gonldii Biun. The most abundant species taken. Com- 

 mon on mossy rocks at St. Joseph's and St. Romauld's (this species 

 was confounded with bollesiana). 



Vertigo ventricosa Morse. Nearly as common as gouldii, and 

 taken at St. Joseph's and St. Romauld's, as well as on the Island. 



Vertigo curvidens Gould. As already recorded. 



Vertigo mi Hum Gould. Very rare. 



Vertigo pygmcva Drap. Single example. 



Vertigo tridentata Wolf. Single example. 



A noticeable absentee from the above list is Pupa contraeta, which 

 however no doubt occurs in the Province. 



Carycliium exiguum Say. As already recorded. 



Carychium exile Ad. One example. 



Polygyra leai Ward. Referring to the valuable catalogue of 

 North American land shells now appearing in THE NAUTILUS, I am 

 glad to see that this shell has been recognized as a distinct species, 

 for such I have always considered it. The species extends into Can- 

 ada. In the spring of 1891, at Brantford, Ontario, in drift along the 

 Grand River, I noticed plenty of dead shells, but never came across 

 any living ones until October. On the 9th and 10th of that mouth, 

 shortly before leaving for Quebec, I got over 200 specimens from a 

 small corner of swampy land overgrown with reeds and bushes 

 adjoining a sluggish stream. Zonites ligerus was in even greater 

 abundance. Besides these species (rare in Canada) were taken : 

 Selenites concava, Vitrina limpida, several small species of Zonites, 

 Papa contraeta, Succinea avara and ovalis, and a very handsome 

 small form of S. obliqua, Pomatiopsis lapidaria, etc. A richer spot 

 could hardly have been found. From a steep bank not far back from 

 the stream, I got a number of pairs of Polygyra monodon, but no 

 P. leai, and I did not find the former species with P. leai down be- 

 low. The chief object of this note is to show the Canadian record. 



DESCRIPTION OF A NEW UNIO. 



BY BERLIN H. WRIGHT. 



TJ. reclusus sp. nov. 



Shell ovate-triangular, smooth, polished above, nearly equilateral, 

 somewhat inflated. Substance of the shell moderate and quite uni- 

 form in thickness. Epidermis finely striate, rayless, brownish, with 



