NAUTILUS. 59 



received, and as there are probably but few copies accessible to 

 American conchologists, we reprint below the passages relating to 

 American Pupidse. 



" In the ' Journ. of Conch.," 1889, p. 63, a small species of Pupa 

 from Colorado was named P. coloradensis, but not described. It is 

 a distinct species allied to corpulentct, but decidedly smaller (length 

 1^ mill.), more striate and slightly narrower. There are four 

 apertural lamella?, [p. 101] one on the parietal wall, one on the 

 columella, and two the lower one the largest on the outer wall. 



"Pupa ingersolli Ancey MS., mentioned on p. 64 of the same 

 volume, has also never been described. It is allied to coloradensis. 

 but 2 mill, long, cylindrical, dull brown, with half a whorl more, 

 and a double lamella 2 on the parietal wall. P. montanella, indicated 

 on the same page as P. coloradensis, proves to be a form of P. pento- 

 donT. D. A. C." (The British Naturalist, 1891, part v. pp 

 100, 101.) 



The description of P. ingersolli is so abbreviated that in a critical 

 group like the modesta group of Vertigo it may be doubted whether 

 it is sufficiently diagnostic. Prof. Cockerel!, who has affirmed the 

 identity of ingersolli with his concinnula, seems to have held a differ- 

 ent view when describing the latter. As the original description of 

 ingersolli is only about two lines long, and quite inexact for con- 

 cinnula, it may fairly be held, I think, that it was not recognizably 

 defined, and the name concinnula should not be displaced. H. A. 



PlLSBRY. 



ASHMUNELLA LEVETTEi (Bid.). Specimens of this species 

 (formerly referred to Polygyrd) were taken alive in the Huachuca 

 Mts., Arizona, by Mr. J. H. Ferriss, and have been dissected by 

 Mr. E. G. Vanatta. It proves to be a typical Ashmunella anatomi- 

 cally. Since this is the case, it is altogether likely that the related 

 'Polygyra mearnsi Dall will follow suit ; so that Ashmunella will 

 include numbers 84 to 89 of the check-list of 1897. It should be 

 mentioned that Mr. C. F. Ancey had already, on conchologic or 

 distributional grounds, referred levettei to Ashmunella, but Mr. 



1 It will be noticed in this connection that the number of whorls is not stated 

 in the description of -P. coloradensis. H. A. P. 



'The term "a double lamella" may be applied to the parietal process of 

 Bifidaria procera, armifera, contracta, etc., but it is conspicuously inexact when 

 used for a species with two separate and distinct lamellae upon the parietal 

 wall, as in Vertigo. H. A. P. 



