PURPURA. Panama Shells. 79 



Shores of Peru ; Kiener : also Deshayes. 

 Monte Christi ; Cuming I Eeeve. 

 Monte Christi and Peru ; Jay. 

 Panama ; E. Jewett ! Gould MSS. 

 Panama and Taboga ; C. B. A. I 



We collected 150 specimens, partly at Taboga, but mostly at 

 Panama. Old specimens become very thick, and are rectan- 

 gularly shouldered on the last whorl. 



'?4. Purpura osculans. Nov. sp. 



Shell obliquely rhombic : dingy white, pure white within : 

 with, on each whorl, 9 transverse, rather small, prominent, well- 

 rounded ridges, which are produced to the anterior extremity : 

 with crowded spiral closely imbricately scaled narrow ridges, 

 which traverse the transverse ridges, and of which the alternate 

 ones are more prominent : apex acute : spire with the outlines 

 rectilinear : whorls six and one-half, convex, with a well- 

 impressed suture : aperture obovate : labrum finely scalloped, 

 transversely grooved within : with a short, deeply-notched 

 canal. Allied to Purpura galea and other kindred species. 



Mean divergence about 70° ; length, .27 inch ; breadth, .17 

 inch ; length of spire, .12 inch. 



Station. — Unknown. 



Habitat. — Panama ; C. B. A. ! 2 specimens were obtained. 



75. Purpura tecta. 



Synonymy. 



Purpura eallosa Sowb. (non Lara.) Gen. No. 42. f. 9. 1824. 



Bucdnum tectum Wood Ind. Test. Siipp. pi. 4. f. 13. 1828. 

 Purpura angvlifera Duel, in Ann. des Sc. Nat. XXVI. 



107. pi. 1. f. 6. May 1832. 



Kiener Iconog. p. 60. pi. 16. f. 43. 



Cuma sulcata Swains. Malac. p. 87, f. 4. p. 307. 1840. 



