PEDIPES. Panama Shells. 207 



San Miguel ; Lt. Green I Mua. Essex Inst. 

 Panama ; 0. B. A. ! 

 290 specimens were collected. The specimens which Lieut, 

 Green collected are of extraordinary size. 



Family— AtlEICULIDiE. 

 3P8. Pedipes angulata. Nov. sp. 



Shell ovate globose : dark brownish red, white in the aper- 

 ture: solid; with crowded wrinkled unequal raised spiral 

 lines, which are much finer on the upper part of the whorls, 

 and which on the middle of the whorls are larger, and are dis- 

 posed with one or two smaller lines between the larger lines : 

 apex subacute : spire with the outlines somewhat curvilinear ; 

 whorls a little more than four, vety angular, concave above the 

 angle, imbricately appressed at the suture ; last whorl large and 

 ventricose, subangular below the middle : aperture subelliptical : 

 labrum very sharp, sinuated by the angle on the whorld, a little 

 within much thickened by a white callus, which is interrupted 

 at the angle, and next below it, is developed into a long tooth : 

 columella expanded with a broad flat surface, with two acute 

 transverse plaits, ,of .which the lower one ^s smaller : labium 

 with a very large lamelliform spiral plait above the columella : 

 umbilicus wa,iiting. 



Mean divergence about 90° ; length .25 inch ; breadth .19 

 inch ; length of spire .1 inch. 



Station. — Under stones at high water mark. 



jBoitVo/.— rPanama ; 0. B. A. I 



•We collected 90 specimeha at the foot of the sea wall at 

 Panama. This and the two species of Truncatella were found 

 only in one place less than two yards in diameter. 



Mr. Cuming obtained at Iquiqui a very small species of 

 Fedipes, which has not been described. We belieVe that thieae 

 two are the only known species in this zoological province. 



