2 J^otice of Land amd Freshwater Shells. 



Cooper are labelled, " both slopes of the Bitter Koot 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. 



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 

 Cape Disappointment, on the borders of Oregon and Washing- 

 ton Territory. 



Helix ]?Iullani, nov. sp. 



T. subobtecte-umbilicata, globoso-depressa, fusco-cornea, irregulariter 

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

 gerentibns ?) munita, sub epidermide nitida ; spira brevi ; anfr. 5 J-6 

 convexis, ultimo antice gibbo, vix descendente, basi laeviusculo, ad aper- 

 turara valde constricto; apertura subtriangulari, obliqu^, dente brevi, 

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

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

 albisinmargine calH positis, 1 inferiore lamelliformi, altero, ssepe obsoleto, 

 parvo ; margine columellari umbiHcum mediocrem pervium semioc- 

 cultante. 



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 5J 

 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 



