MUSEUM OF COMPARATIVE ZOOLOGY. 199 



and Tulare Valley, California. It may, however, belong rather to the 

 Lower California fauna,* having been 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. 



From the list of California species are omitted Columna Californica, 

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



* The peninsula of Lower California forms a distinct molluscous province of it- 

 self, extending nearly to San Diego. The following species are peculiar to it : — 



Ccelocentrum irregulare, Gabb. Bulimulus pallidior, Sowerby. 

 Helix Stearnsiana, Newc. (Kelktti, excelsus, Gould. 



Fbs. ?) inscendens, W. G. Binn. 



areolata, Sowb.( Veitchii, Tryon sufflatus, Gould. 



Pandorae, Forbes. pilula, W. G. Binn. 



levis, Pfr. proteus, Brod. 



Rowelli, Newc. (Lohri, Gabb.) Xantusi, W. G. Binn. 



Berendtia Taylori, Pfr. artemisia, W. G. Binn. 



Bulimus spirifer, Gabb. Onchidium Carpenteri, \V. G. Binn. 

 Gabbi, Crosse. 



Veronicella olivacea, Stearns, a Nicaraguan species, is also found in Lower Califor- 

 nia. Of the above list one only has been found near San Diego, //. Stearnsiana. 

 Another, //. Roivelli, has been referred to Arizona, but with doubtful accuracy. //. 

 Pandorce and areolata have also erroneously been referred to California. Helix Re- 

 mondi (Carpenteri) is omitted from the list, as it also occurs in the California 

 Region. It is the only species common to the peninsula and mainland of Mexico. 

 The most interesting fact in the fauna of Lower California is trft presence of Bulimulus 

 proteus and B. pallidior, — species described 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 

 interesting to add here a list of species found at and north of Mazatian, on the 

 Pacific coast of Mexico. 



Glandina turris, Pfr. Helix acutedentata, IP. G. Binn. 



Aibersi, Pfr. ventrosula, Pfr. 



Holospira Remondi, Gabb. Bulimulus Ziegleri, Pfr. 

 Helix Mazatlanica, Pfr. Californicus, Rce. ? 



Carpenteri, Newc. Orthalicus uudatus, Bnuj. 



anilis, Gabb. Pupa chordata, Pfr. 



Behri, Gabb. Succinea cingulata, Forbes. 



Of the above, II. Mazatlanica has lately been quoted from San Francisco, con- 

 founded probably with some allied species. 



//. Mormonum is omitted from this list, its presence in Sonora not having been 

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



