78 THE NAUTILUS. 



1905] ; Bear Lake [R. H. T., 1902 ; S. S. B., 1907, 1908] ; Dag- 

 gett [Stearns, '93]. 



Planorbis parvus Say, Mojave River, near Daggett [Stearns, 

 '93]; Swamp at Bluff Lake [S. S. B., 1907, 1908]; Bear Lake 

 [S. S. B., 1907, 1908]. 



The specimens from Bear Lake were identified by Dr. Dall as P. 

 vermicularis Gould. They certainly have a slightly different aspect 

 from the Bluff Lake specimens, but I doubt if they are distinct. 



Paludestrina stearnsiana Pilsbry. Rill near mouth of Mill 

 Creek Canon, San Bernardino Mountains, very abundant in July, 



1908 [S. S. B.], but a rather hasty search in the same locality one 

 year later did not yield a specimen. 



Mountain Home Creek, San Bernardino Mountains, altitude 

 3,600 feet [S. S. B., July 11, 1909]. 



\^Paludestrina protea Gould. In numerous collections I have seen 

 large series of this species in a subfossil condition which were dis- 

 tributed some years ago by an unknown collector as from the " Mo- 

 jave Desert." They are probably from San Bernardino County, so I 

 record them here, although " Colorado Desert " may have been what 

 the label meant. As the species is known to exist in Inyo and 

 Riverside Counties, it may reasonably be expected to turn up in the 

 living condition in this county as well.] 



[ Valvata lewisii Currier. San Bernardino Mountains, Cal. 

 [fide Dall, '05, p. 123 ; also see Walker, '06, p. 26]. 



I have not seen any of Dall's specimens, but I have no doubt 

 whatever that they really represent not V. lewisii, but the following 

 form :] 



Valvata humeralis californica Pilsbry. Swamp at Bluff Lake, 

 altitude 7,550 feet [S. S. B., Aug., 1907, 1908; N. G. S., Aug., 

 1909 — not very abundant]. 



Bear Lake, altitude 6,700 feet, the type locality [S. S. B., Aug., 

 1907, 1908]. 



For this form beside the references given above under V. lewisii, 

 see Berry, '08, p. 122, and Pilsbry, '08, p. 82. 



Anodonta calif or niensis (Lea) var. Chino Creek. S. of Ontario 

 [R. H. T., 1908]. 



Musculium raymondi (J. G. Cooper). Swamp and creek at Bluff 

 Lake, large and abundant in 1905 [R. D. Williams] ; very common 

 but small in 1907 [S. S. B.] ; more rare in 1908 [S. S. B.] and 



1909 [N. G. S.] ; apparently being replaced by the following species. 



