948 



ZO( ) LOGY— MOLLUSC A. 



Fam. VALVATIDAE. 



Genus VALVATA, O. F. Muller. 

 VALVATA SINCERA, Say. 



Valvata sineera, Say, Long's Exped. Eocky Mts., 1823,204, pi. sv, f. 11.— Say, Couch., 

 Binnej's ed., 130, pi. lxxiv, f. 11.— Hald., Mod., 0, pi. i, tigs. 5-10.— Adams, 

 Venn. Moll., 152.— Id., Am. Jour. Sei. & Arts (1), xl, 207.— DeKay, N. 

 Y. Moll., 110, pi. vi, tigs. 127, 128.— Binney, Land & Fresh Water Shells 

 N. Y., pt. iii, 1SG5, 12. 



Valvata depressa, pars Kuster, in Chemnitz, ed. 2, 1852, 88.— Menke, Zeit. fur Mai., ii, 

 1845, 122 (including tricarinata and simplex). 



Valvata striata, Lewis, Proc. Acad. Nat. Sci. Phila., 185G, 2G0. 



Found in same locality as some individuals of the genus Trt/onia, and 

 is apparently rare in Utah, although found in the northwest rather abund- 

 antly. 



No. 



Locality. 



Date. 



Collector. 



(?) 



Near Salt Lake City, Utah 



July, 1S72 



Dr. H. C. Yarrow. 





Mr. Tryon has furnished the following three names of species occur- 

 ring in our collections ; but, as there is some doubt on this point, we have 

 preferred to mark them doubtful : — 



Fam. VIVIPAIUDAE. 



Genus CAMPELOMA, Raf, 

 ?CAMPELOMA INTEGRA, Say. 

 Detroit River ; Madeline Island ; Lake Sujierior. 



Fam. KISS0IDJ]. 



Genus TRYONIA, Stimpson. 

 ?TRYONIA EX1GUA, Courad. 

 With regard to this species, Mr. Tryon writes me that a representative 

 of the genus Tryonia was found in the same locality as Carinifex newberryi, 

 viz, shores of Sevier Lake, Middle Utah. Mr. Tryon informs me this is 

 probably T. exigua, Stimp., or else a new species. Unfortunately, not 

 enough specimens were secured to establish the latter. He considers this 

 discovery a valuable one. 



