Fig. 21. 



20 LAND AND FRESH-WATER SHELLS OF N. A. [PART IL 



is executed with such quickness that the Pedipes is one of the 

 most agile of mollusks. 



Pedipes lirata, W. G. Binney.— Shell imperforate, globose-conic, 

 solid, shining, straw-colored, regularly marked with revolving ridges; 

 spire short, depressed, apes obtuse ; whirls three, the upper 

 ones short, the lower one about equalling five-sixths the length 

 of the shell ; aperture semicircular, its parietal wall covered 

 with shining callus, and furnished with a thick, elevated, 

 hooked and entering fold; columella furnished with two 

 thick, acute, tooth-like processes, placed side by side ; peri- 

 stome acute, furnished on its interior with a shining callus, 

 which is protracted into a high tubercle at its middle. Greater 

 diameter 2^, length 3^- ; length of the aperture 2i mill. 



size. Pedipes lirata, W. G. Binney, Phila. Acad. Nat. Sc. Proc. 



1860, 154. 



Cape San Lucas, Lower California. 



The specimen figured is the only one found. It may, perhaps, 

 be somewhat related to P. angulata, Adams, of Panama, which 

 I have not seen. 



Cat. No. 



No.ofSp. 



Locality. 



From whom received. 



Cape St. Lucas. 



John Xantus. 



Remarks. 



Cabinet series. Type. 



BliAlJJVERIA, Shuttl. 



Shell imperforate, oblong-turreted, thin ; aperture narrow, 

 elongated ; inner lip with a single plait, columella subtruucate ; 

 outer lip simple, straight. 



Foot somewhat truncated in front, pointed behind, long as the 

 shell's aperture ; head large, projecting beyond the foot, forming 

 a snout with dilated lips ; tentacles short, cylindrical, eyes at 

 their superior base. 



But one species of this genus is known, the B. pellucida. It 

 is one of those shells whose generic position cannot be ascertained 

 without a knowledge of the characters of the animal. It Avas 

 placed among the Helicidse as Achatina and Tornatellino, as a 

 Glandina among the Oleacinidse, and among the Pectinibran- 

 chiates as Ododomia, until it was ascertained by Dr. Gundlach to 

 •belong to the Auriculidse. 



IL 



