64 CALIFORNIA ACADEMY OF SCIENCES. 



6. Helix mormonum Pfeiffer, Found in the mount- 

 ains near Lake Eleanor, between 4.500 and 4,800 feet 

 altitude. It is also known to occur from the base of the 

 mountains up to the Big Trees of Calaveras County, alti- 

 tude 4,750 feet, and of Mariposa County, at 5,500 feet, 

 becoming smaller with increase of elevation. A small 

 specimen has also been found in Yosemite Valley by 

 Mr. M. A. Knapp. 



7. Vallonia pulchella var. costata Miiller. But 

 one specimen was found in Bloody Canon, at about 8,000 

 feet, and it has before occurred only on the same side of 

 the Sierra down to 5,964 at Donner Lake. On the 

 Rockv Mountains Ingersoll reports it only between 8,000 

 and 10,500 feet altitude, though it is distributed across 

 the more northern parts of both continents at lower ele- 

 vations. 



8. Pupa corpulenta Morse. About 50 found also 

 in Bloody Canon, some of which exhibit an undeveloped 

 second tooth on the parietal w^all, agreeing with some 

 found by Hemphill in Utah, It is reported from as high 

 as 10,000 feet altitude in Colorado, and from Vancouver's 

 Island. 



9. Vertigo ovata Say.? This species has been re- 

 ported before from southern California and Vancouver's 

 Island. Some of the specimens unlike the Eastern form 

 have been sent East for determination as to its being a 

 distinct species. 



10. SucciNEA stretchiana Bland. Only six were 

 found in the three localities, that of Bloody Canon being 

 1,500 feet higher than before reported on the east slope, 

 while on the west it descends to 3,400 feet in Plumas 

 County. 



11. Phvsa gabbi Tryon, var.? A few immature 

 specimens only were found, some showing the pale 



