200 AMERICAN JOURNAL 



their being herbivorous, carnivorous or omnivorous, as shown by 

 the lingual dentition or jaws, since it is well known that these 

 divisions are characteristic chiefly of the higher animals of each 

 class. Many land species feed on fungi which are nearly as 

 much animal as vegetable in nature, and nearly all devour each 

 other when starving. 



As to the caudal mucous gland, it is certainly of much less 

 importance than the shell, and if made the basis of some family 

 divisions, why not found all the families on the mucous glandular 

 system only ? 



Succinea Stretchiana, Bland. Specimens found by Harford 

 and Dunn at Clark's Ranch, near the forks of Merced river, 

 Mariposa Co., at 4270 feet elevation, are more elongated than 

 the type figured, resembling small specimens of Oregonensis, Lea. 

 Its first discovery west of the Sierra Nevada. 



Succinea Sillimani, Bland. Found at Stockton by Mr. Dunn, 

 and at Marsh's Ranch, east of Mt. Diablo, by Mr. Rowell, not 

 rare. Small ones are very like S. JViittaUiana, Lea, which has 

 before been reported from San Joaquin valley. Before found 

 only at Humboldt Lake. 



Succinea lineata, W. G. Binney. Bleached specimens from 

 near Salt Lake City found by i)r, Beraz, cannot be distinguished 

 in form from the above, but show no spiral lines. They are un- 

 commonly heavy. 



VlTRINA PELLUCIDA, Mllll. ? 



Whorls 3, greenish, spire more elevated, but base flatter than 

 in V. Pfeifferi ; diam. 0*20, axis 0-05, alt. 0*075. Lower and 

 broader than V. angelicce or limjjida. 



Specimens brought from Ounalaska by Mr. Harford difi"er as 

 above from both the western form and the eastern V. limpida. 

 Although smaller than most European specimens, they appear to 

 agree otherwise, and Middendorff" gives that species as circum- 

 polar (Sibiriens Reise, pp. 273 — 308, 1851). He also mentions 

 Succinea putris^ but no species of the genus has been found in 

 Alaska recently. According to Morch, he includes S. Grcen- 

 landica.* 



Vitrina Pfeifferi^ Newc. Has been found by Mr. C. D. Voy 

 in Shasta Valley, Siskigon Co., and in Klamath Co., at 6000 

 feet elevation on Coast Mts. Also by Mr. Harford at Big Tree 

 Meadows, Mariposa and Fresno counties, about 6500 feet high. 



* This Journal, iv, p. 31. 



