338 PROCEEDINGS OF THE CALIFORNIA 



42 Ayresiana Newc. Wh. 6 to 7, yellowish, paler below, strongly 

 grooved, spire elevated; diam. *0. 80, axis 0.55. "Santa Cruz I., Oal." 

 Newcomb coll. 



J J Colors dark, often paler above. Inhabit damp coniferous forests, 

 lat. 37° to 50°. 



43 Dupetithouarsii Desk. Wh. 7 to 8, brown or olive, band mar- 

 gins whitish, grooves obsolete, often submalleate ; diam. 0.90 to *1.20, axis 

 0.54 to *0.60. 



44 fidelis Gray. Wh. %% to 7, band and beneath black, band margins 

 and above red or yellow (a hybrid ? var., black, and becoming slightly angled) ; 

 diam. 1.12 to 1.50, axis 0.60 to 0.90. " Oregonensis " Lea, may be = 44 jun. 



XIV" Group. (Aglaia Albers, part.) Depressed, usually subangled, 

 hirsute or bristle marked, umbil. large. 



45 infumata GUI. Chestnut to black, a single band sometimes visible, 

 angled, lip thin, bristles deciduous ; (closely allied to black var. of 44 ;) diam. 

 1.40 to *1.50, axis 0.54 to 0.60. 



46 sequoieola Cp. Wh. §%, dark brown, rounded, bristles only in 

 young, leaving marks ; diam. *1.08 to 1.20, axis 0.50 to 0.54. 



47 Mormonum Pfeiff. Wh. 6 to §%, brown, depressed, sometimes 

 subangled, sometimes bristle marked ; diam. 0.95 to 1.30, axis 0.50 to 0.54. 



48 Hillebrandi Newc. Wh. 6, yellowish brown, bands hid by persistent 

 long bristles, subcarinate, lip broad ; diam. 0.80 to 0.96, axis 0.35 to 0.40. 



C. Bandless ; lip more developed, reflected, often toothed 

 at the base. 

 Genus Mesodon Raf. Lip broadly expanded, often 1-3 

 toothed, or with parietal tooth only, sometimes none ; corneous. 



XV Group. (" Arianta.") Toothless, umbilicus large, surface 

 coarsely wrinkled or granulate, lip broad, reflexed. 



49 Townsendiana Lea. Wh. by 2 to 6, mixed yellow and brown, 

 body whorl coarsely wrinkled, fine revolving grooves; diam. 0.68 to 1.38, 

 axis 0.35 to 0.55. (a) 



50 anachoreta W. G. Binn. " Wh. 6, reddish ashen, granulated and 

 sparsely indented ;" diam. *1.00, axis 0.54. 



XVI Group. Odotropis Raf. " Tooth upon columella, umbilicus 

 covered." Lower lip tuberculate, and a parietal tooth. 



51 devia Gld. Wh. 6, brown or olive, no sculpture except distinct lines 

 of growth ; diam. 0.80, axis 0.45. 



(a) A specimen figured by Mr. Tryon in the last number of the "Journal" just received, (May, 

 1867\ as "var. minor," from Idaho and Nebraska, seems to have'an obscure band, which, together 

 with its form and want of wrinkles, indicate entire distinctness from Tounsendiuna. The small 

 form of the latter found by me in Montana has no band, and seems close to liinney's anachoreta, 

 of which supposed specimens from " Oregon " are in Mr. Kowell's collection. The Eastern 

 Mesodon clausa, t levata and perhaps others, have been found banded occasionally, but without 

 the paler margins, and only as an exception. 



