GEOGRAPHICAL DISTRIBUTION. 21 



described from that region under the name of H. Remondi, and from 

 Guaymas. Veronicella olivacea, Stearns, a Nicaraguan species, is also 

 said to extend into California. I should also mention that Binneya 

 notabilis has been found on Guadalupe Island, off the coast of Lower 

 California. 



From the list of California species are omitted Columna CaUfornica, 

 actually collected at Marmato, New Granada, by Mr. Bland, and Zonites 

 cultdlatus, probably an accidentally introduced European shell. Buli- 

 rmis Californicus is also omitted, belonging, no doubt, to the region of 

 Mazatlan. Also Glandina Albersi, which we know to live in the Sierra 

 Mad re. 



Separate lists of species peculiar to the several regions of the Pacific 

 Province are given above. There now follows a complete list of all the 

 species hither/to observed in the entire Province. 



Macrocyclis Vancouverensis. Vitrina Pfeifferi. 



sportella. Limax campestris. 



Voyana. Hewstoni. 



Duranti. Prophysaon Hemphilli. 



Zonites Whitneyi. Ariolimax Columbianus. 

 arboreus. Californicus. 



indentatus. niger. 



minusculus. Hemphilli. 



milium. Andersoni. 



conspectus. Arion? foliolatus. 

 chersinellus. ? Andersoni. 



Stearnsi. Binneya notabilis. 



fulvus. Hemphillia glandulosa. 



common to the peninsula and mainland of Mexico. The most interesting fact in the fauna 

 of Lower California is the presence of Bidimulus proteus and B. pallidior, species de- 

 scribed originally from South America, the former from Chili. Such facts can only be 

 accounted for by a theory of former connection of the two points. 



Though still more remotely connected with the subject of this paper, it will be inter- 

 esting to add here a list of species found at and north of Mazatlan, on the Pacific coast of 

 Mexico. 



Glandina turris, Pfr. Polygyra acutedentata, W. G. Binn. 



Albersi, Pfr. ventrosula, Pfr. 



Holospira Remondi, Gabb. Bulimulus Ziegleri, Pfr. 



Patula Mazatlanica, Pfr. Californicus, Rve. * 



Arionta Carpenteri, Newc. Orthalicus undatus, Drug. 



Polygyra anilis, Gabb. Pupa chordata, Pfr. 



Behri, Gabb. Succinea cingulata, Forbes. 



Of the above, P. Mazatlanica has lately been quoted from San Francisco, confounded 

 with some allied species, as I have since learned. 



A. Mormanum is omitted from this list, its presence in Sonora not having been con- 

 firmed, although asserted, doubtfully, by Messrs. Fischer and Crosse. 



