78 Panama Shells. PUBPUEID^. 



Bay of Panama ; Cuming 1 Eeeve. 



West Columbia ; Jay. 



La Paz, in Lower California ; Lt. Green 1 Gould 



MSS. : also Mus. Essex Inst. 

 Panama ; Jewett 1 Gould MSS. 

 Panama ; C. B. A. I 

 Duclos' and Kiener's statement is probably erroneous. 

 We collected 170 specimens. The variety, figured by Mr. 

 Eeeve, with two keels almost equally developed, we did not 

 find : but several specimens have a second keel moderately 

 developed. 



12. Purpura . Sp. indet. 



This shell resembles P. kiosquiformis, is longer, with the 

 whorls revolving more obliquely, and with other differences. 

 One specimen was obtained. It is not sufficiently perfect for 

 description. 



73. Purpura nielo. 



Synonymy. 



Purpura crassa Blainv. in Nouv. Ann. Mu&. I. 241. 



No. 83. pi. 12. f. 4. March 1832. 



Sowb. Gen. No. 42. f. 5. 1824. 



melones Duel. Ann. des Sc. Nat. XXVI. 105. 



pi. 1. f. 2. - - - - May 1832. 



Kiener Iconog. p. 125. pi. 39. f. 93. junior. 



Eeeve Conch. Syst. pi. 259. f. 5. junior. 1842. 



mclo Desh. in Lam. An. sans Vert. X. 106. 



No. 11. - - - - - 1844. 

 melones Reeve Conch. Icon. pi. 4. f. 19. -A-Ug. 1846. 



Station. — Under stones, at low water; Cuming! Eeeve. 



Our specimens were found about the sides and crevices of 

 rocks, from the low water mark of neap tides up to three-quar- 

 ters tide. 



Habitat. — Unknown ; Blainville ; also Duclos. 



