2l6 CALIFORNIA ACADEMY OF SCIENCES. 



discovery of a subfossil form on Espirito Santo Island, 

 just north of La Paz, about latitude 24° 30', by Mr. Bry- 

 ant. He thinks it may still be found living there in the 

 wet season, as well as the Btilimidiis mentioned before. 



H. AREOLATA var. EXANiMATA diffci"* from the Mar- 

 garita Island type in average smaller size and heavy 

 thick shell, var3ang much in height and width, but all 

 with six whorls. Mouth small, lips thick, sometimes 

 connected by callus, some denticulate at base. Color 

 white, or banded irregularl}- with three to ten bands of 

 varying width, much faded, sometimes covering more 

 than half the surface, and much less broken by light 

 patches than in areolata. In some the whole spire is of a 

 dark color, but they are all so chalky and fossilized that 

 this ma}^ not have been so when living. (Thirty-eight 

 specimens received.) 



Diam,, maj. 0.75 to 0.90 inch; min. 0.65-0.80; alt. 

 0.50-0.65. 



Hyalina indentata Say, 1822. Several of this 

 species were found by Mr. Eisen high on the Sierra La- 

 guna, and a few also in Sonora, Mexico, at an elevation 

 of 3,000 feet or more. 



They do not show the distinctive characters given for 

 ^'H. subrupicola'' Dall., and agree with Eastern speci- 

 mens except in smaller size. 



Pupa (Vertigo) ovata Say, 1822. Nine specimens 

 of this species found with the last; rather small also. 

 These two seem to be among the boreal American species 

 which follow the mountain chains far south. Before 

 traced south to latitude 31*^, Orcutt. 



SucciNEA rusticana Gould. This, which may be 

 only a race of S. oregonensis, was found common by Mr. 

 Eisen on the Sierra Laguna, near ponds, etc. The lat- 

 ter was already reported to occur south to latitude 31°, 

 by Mr. Orcutt. 



