70 HELIX. 



H. INFUMATA, Gould. PL 15, fig. 97. 



Moderately umbilicated, with minute rasp-like elevations, running 

 obliquely to the growth-striae and in the fresh state bearing very 

 short soft hairs, smoky brown above, blackish, shining and minutely 

 granulated on the base; whorls 6*, flatly convex, the periphery 

 acutely angulated ; peristome somewhat reddish, simple above, re- 

 flected at the base. Diam. 37 mill. 



Northern California, near the coast. 



Young specimens are sometimes banded. The animal is black, 

 with bright red tubercles. 



H. HILLEBRANDI, Newcomb. PL 15, fig. 98. 



Moderately umbilicated, finely striated, granular, and hirsute in 

 fresh specimens, yellowish horn color with a chestnut band bordered 

 with white on either margin ; whorls 6, slightly convex, the last with 

 carinated periphery, slightly descending in front; peristome white, 

 subreflected, extremities approaching. Diam. 1 in. 



Sierra Nevada region, California. 



H. AYRESIANA, Newcomb. PL 15, fig. 99. 



Rather narrowly umbilicated, with rough oblique incremental 

 striae, deeply cut by impressed revolving lines, yellowish white, with 

 a narrow superior chestnut band ; whorls 7, convex, the last de- 

 scending in front, subglobose ; peristome simple. Diam. 22 mill. 



Sta. Cruz, S. Miguel and Sta. Rosa Islands of California. 



Erroneously described as from Northern Oregon. 



H. MORMONUM, Pfr. PL 15, fig. 1. 



Moderately umbilicated, rather thin, with curved incremental 

 striae, light chestnut color, with a chestnut band edged with white on 

 either side ; whorls 6, convex, slowly enlarging ; aperture very ob- 

 lique, peristome thickened, white, a little expanded, extremities 

 slightly converging. Diam. 29 mill. 



Between Sierra Nevada and Coast Range, California, 



Not a coast or Oregonian species, as at first supposed. 



H. CIRCUMCARINATA, Stearns. PL 15, figs. 2-4. 



Rather widely umbilicated, finely granulated, with irregular ribs 

 intermingled with the growth striae, yellowish white, sometimes with 

 a superior double band, the upper striae being whitish, the lower 

 chestnut color; whorls 6-6 J, the last with a compressed, fimbriated 



