122 THE NAUTILUS. 



Psephis tellimyalis Cpr. B. A. Rep. Moll. Western X. Am., p. 

 641, 1864; Journ. de Conchyl. xii, p. 135, 1865 (larval shell). 



This species belongs to the middle American or Panamic fauna 

 and is known to extend as far north as San Pedro and south to the 

 Peruvian coast. The P. cognata Is somewhat more restricted and 

 seems most abundant in the Gulf of California. It has been found 

 as far north as San Diego. The P. nivea (Mytilns ?iiveus Chemn.) 

 Gmelin, is an Indo-Pacific species, very similar to P. denticulata and 

 confounded with it by most of the early writers. 



DESCRIPTION OF A NEW CALIFORNIAN LAND SHELL. 



BY F. W. BRYANT. 



Epiphragmophora Bowersl, n. sp. 



Shell umbilicated, convex ; epidermis olivaceous ; spire slightly 

 elevated ; whorls between 4 and 5, convex, gradually increasing ; 

 suture well defined ; aperture transverse, nearly circular; peristome 

 whitish, thin, very slightly expanded at the basal portion, at the 

 columella broadly reflected, yet leaving the umbilicus entirely open, 

 showing within the whorls to the apex ; base convex. 



A well-defined, moderately broad, light-chestnut band revolves 

 above the centre of the body whorl, and is visible above the suture 

 on the whorl preceding the last ; lines of growth close and distinctly 

 marked. 



Greater diameter 13, lesser 10, height 6 mm. 



Location, San Jacinto Mts., Riverside County, California. 



THE CORROSION OF SHELLS IN CABINETS. 



The above is the title of a paper of the greatest importance to all 

 collectors of shells, and especially to those having charge of museums 

 where the shells are usually glued to cards or tablets. Although no 

 corrosion of shells has been noticed in the collections of this country, 

 it is well to he on the lookout, and to guard against all apparent 

 '•auses. 



1 The Corrosion of Shells in Cabinets. By L. St. G. Byne, M. Sc. With a 

 prefatory note by T. Cosmo Melvill, M. A.. F. L. S. The Journal of Oonchol- 

 ogy, Vol. ix.. pp. L72-1T8, and pp. 253-254, 



