I02 CALIFORNIA ACADEMY OF SCIENCES. 



as the largest examples show it most, the projection be- 

 yond the outline of shell being in some 0.45 of an inch. 

 It may be analogous to the deflection of upper lip seen 

 in many helicoid shells at maturity, and caused by the 

 weight of shell becoming too great for the animal to sup- 

 port as it did before. This species, in climbing trees has 

 to carry the shell constantly growing spirally, until unable 

 to do so, when the last half inch takes a nearly straight 

 growth. It may be a form limited to the warmer eastern 

 side of the peninsula. 



Mr. Bryant obtained twelve examples of this form, 

 two of them living and of a pale brown color, thus prov- 

 ing that it is a permanent local variation instead of being 

 only an individual deformity. 



B. (MoRMUs) piLULA W. G. Binney. " Todos Santos 

 and Margarita Island " Xantus, or 120 miles up the west 

 coast. San Jose del Cabo, Bryant . 



A. (MoRMUs) suFFLATUS Gould. -'LowerCal." San 

 Jose del Cabo to La Paz, Bryant. Not found by Xantus. 



Rhodea californica Pfeiffer, subsp. ? ramentosa 

 J. G. C. The only specimen found is a dead one, which 

 has unfortunately lost some whorls, though there are eight 

 remaining. These are flattened cyHndrical, very slightly 

 tapering, imperforate, sculptured by about twelve fine 

 revolving strice cutting obliquely across close-set riblets, 

 not parallel to lines of growth, producing a file-like sur- 

 face. Length .60, diam. 1.15 inch. It is most probable 

 that better specimens will prove this to be a distinct spe- 

 cies. The mouth is apparently not fully developed. 

 It is very unlike Cxiindrclla, etc. 



This is an interesting discover}' as probably showing 

 the origin of the specific name, though first described 

 as from Monterey, Cal., and not lately found north of Bo- 

 gota, New Grenada. It onlv differs from figures and 



