North American Helicidce. 357 



that of H. inomata Binney, and the reflection of the peristome 

 is much like that of H. ligera. 



European authors can only have formed their judgment on 

 the questions regarding H. glaphyra from Say's writings, or 

 those of other American conchologists, or from specimens 

 labelled by them. Pfeiffer* describes a dark colored variety 

 of H. inomata Binney under the name of glaphyra, as he ad- 

 mits in a late letter to Mr. "W. G. Binney. 



Reeve's description and figure are also of H. inomata Binney. 



Deshayesf (Fer. Hist.) has glaphyra in the synonymy of eel- 

 laria, evidently relying on the opinions of Gould and Binney. 



The North American shell which agrees most closely with. 

 Say's glaphyra is H. inomata Binney, — it occurs in Pennsyl- 

 vania, must have been known to Say, and there is abundant 

 evidence to show that many conchologists so interpreted it. 



"When I visited the Academy at Philadelphia in October, 

 1857, I found in the cabinet a specimen of H. inomata Binney 

 labelled H. glaphyra Say, in the handwriting, as I was informed, 

 of Mr. J. Phillips. Mr. "W. G. Binney then explained to me, 

 that many years ago Mr. Phillips had charge of the cabinet, 

 and so labelled the specimen referred to, but had since admitted 

 his determination to be erroneous. 



"With respect to E. inomata Say, described as " subglobose," 

 and having " a strong resemblance to H. ligera" I cannot ac- 

 quiesce in the opinion that it has been correctly identified by 

 Dr. Binney. I have already stated my belief that Say's inor- 

 nata is the H. laevigata Eaf., the species confounded by Dr. B. 

 with H. lucuhrata Say. On a future occasion I propose to ex- 

 amine these questions more fully, but desire now to place on 

 record the following interesting points relating to them._ 



* Pfeiffer (Mon. I. p. 112) suggests that H. subplana is the same as his glaphyra, 

 but the species are most certainly distinct. 



f Deshayes, in his remarks on H. dissidens (Fer. His. I. p. 97), conjectures that 

 American conchologists have confounded that species with the IT. cellaria of 

 Europe. It seems to be rather a variety of H. concava Say. 



