2 Notice of Land and Freshwater Shells. 



Cooper are labelled, " both slopes of the Bitter Root Mountains 

 from 5600 feet to 2200 feet." 



In Binney's Terr. Moll. II. 162, the greatest transverse dia- 

 meter of Oregon examples, is said to be If inch. 



The following are the measurements of large and small speci- 

 mens from Dr. Cooper's shells. 



Diam. maj. 23, min. 20, Alt. 13 mil. 

 '' " 17, " 13^, " 9 " 



The small variety is generally more strongly and coarsely 

 wrinkled. 



Dr. Cooper in the Pacific R. R. Report, gives Puget's Sound, 

 W. T., as a habitat of this species, — it has also been found at 

 Ca}>e Disappointment, on the borders of Oregon and Washing- 

 ton Territory. 



Helix jflullani, nov. sp. 



T. subobtecte-umbilicata, globoso-depressa, fusco-coniea, irrcgulariter 

 striata, epidermide tenui, sub lente lineis spiralibus, et tuberculis (setos 

 gerentibus ?) munita, sub epidermide nitida ; spira brevi ; anfr. 5|— 6 

 convexis, uhirao antice gibbo, vix descendente, basi Iseviusculo, ad aper- 

 turam valde constricto; apertura subtriangulari, obliqua, dente brevi, 

 albo, linguiformi, in pariete aperturali intrante subcoarctata ; perist. albo, 

 vel rufo-corneo, expanse, fornicatim reflexo, bidentato, deutibus duobus 

 albis in margine calli positis, 1 inferiore lamelliforrai, altero, ssepe obsolete, 

 parvo ; margine columellari umbilicum mediocrem pervium seraioc- 

 eultante. 



Shell with umbilicus partially covered, globose-depressed, 

 dark horn colored, irregularly striated, having a thin epidermis 

 with microscopic spiral lines, and tubercles (the latter with 

 hairs ?) ; beneath the epidermis shining ; spire short ; whorls h^ 

 to 6, convex, the last gibbous above, scarcely descending, the 

 base rather smooth, much constricted at the aperture ; aperture 

 subtriangular, oblique, with a short white linguiform parietal 



