210 HELICID^. 



61. HELIX STRIGOSA, GouLD. 



Plate XXVI. 



H. testa orbicular!, depressa, scabrata, late umbilicata, 

 cinereo-grisea vel fuscescente, fasciis linearibus volventibus 

 pallide fuscis interdum subtus notata ; spira anfractibus 

 quinis convexiusculis ; ultimo angulato, et prope aperturam 

 deflexo ; apertura circulari ; labro simplici, continuo. 



SYNONYMS AND REFERENCES. 



Helix slrigosa, Gould, Proc. Bost. Soc. Nat. Hist. II. 166, Aug. 1S46. 



Expediliun Shells, 18. 



Pfeiffer, Moaog. Helic. Viv. I. 121. 



DESCRIPTION. 



Shell orbicular, slightly, and about equally, convex 

 above and beneatb, broadly umbilicated, surface irregu- 

 lar, and roughened above by indentations and coarse 

 lines of growth, and by occasional fine revolving lines ; 

 smoother and shining beneath. Color ashy gray, some- 

 what mottled with dusky, or altogether rusty brown 

 above, with, usually, a single, famt, revolving baud on 

 the middle of each whorl, and often with numerous 

 bands, unequal in size and distance, beneath. Whorls 

 five, moderately convex, the last one carinated at its 

 commencement, and deflexed near the aperture, which 

 is circular, with the lip simple, and nearly continuous ; 

 suture well impressed. 



Greatest diameter nearly an inch ; axis two-fifths of 

 an inch. 



Geographical Distribution. Brought by the U. 

 S. Exploring Expedition from the interior of Oregon. 



