No. 9. — Catalogue of the Terrestrial Air-breathing 3Iolhi8ks of 

 North America, with Notes on their Geographical Range. By 

 W. G. BlNNEY. 



In connection with ray friend, Mr. Thomas Bland, I have collected 

 many facts relating to the North American Land Shells since the pub- 

 lication of our Monograph.* The following pages give a synopsis of 

 the more important of these, especially such as throw light upon their 

 classification, synonymy, and geographical distribution. 



As regards classification, I have followed the arrangement proposed 

 by Mr. Bland and myself in the Annals of the Lyceum of Natural 

 History of New York, Vol. X. p. 158. 



As regards synonymy, I have followed our Monograph referred to, 

 except in a very few cases where more ample opportunities of study 

 have caused me to reconsider our decisions. Future study will, no 

 doubt, eliminate as synonymes several species of the present catalogue. 

 I have added the species described since our Monograph was printed. 

 Happily but two synonymes have been added to our list since then, — 

 Vertigo tridentata and Helix ptycophora. 



As regards geographical distribution, it must be borne in mind that 

 the data are very imperfect on which I base my views. Future re- 

 search will, no doubt, greatly modify them. I have omitted the species 

 of Lower California as belonging to the fauna of Mexico. San Diego 

 is the lowest point from which we have truly Californian species. 



PULMONATA GEOPHILA. 



OLEACINIDiE. 



Glandina Vanuxemensis, Lea. Glandina decussata, Desh. 

 truncata, Gmel. bullata, Gld. 



parallela, W. G. B. Texasiana, Pfr. 



* Land and Freshwater Shells of North America, Part I. Pulmonata Geophila. 

 By W. G. Binuey and Thomas Bland, Washington, Smithsonian Institution, 1869. 



