TRIPHORIS. Panama Shells. 159 



Habitat. Panama ; C. B. A. ! 



3 mature and 2 young shells were found. 



208. Triphoris inconspicnus. Nov. sp. 



Shell long, ovate fusiform, sinistrorsal : blackish red, fading 

 into a cinereous colors with three spiral equidistant strongly 

 nodulous ridges on each whorl, of which the intermediate one is 

 wanting on the upper whorls, and three or four additional 

 scarcely nodulous ridges anteriorly ; with about twenty or 

 twenty-two transverse less prominent ridges on each whorl: 

 apex very acute : spire with curvilinear outlines : whorls twelve, 

 moderately convex, with the suture indistinct ; last whorl with 

 the periphery subangular: aperture subrhombic, with a sinus 

 above : labrum much advanced : canal deep, short. 



Mean divergence .about 22 ; length .165 inch ; breadth. 

 ..055 inch; length of spire .13 inch. 



Station. Tinder stones near low water mark. 



Habitat. Taboga and Panama ; C. B. A. ! 

 16 specimens were collected. 



209. Triphoris infrequent. Nov. sp. 



Shell long, conic : blackish red : with three excessively promi- 

 nent much compressed spiral ridges on the spire, and another on 

 the periphery of the last whorl ; with about sixteen or eighteen 

 less prominent transverse ridges on each whorl ; anteriorly with- 

 out sculpture.: apex acute : spire with the outlines nearly rec- 

 tilinear : whorls thirteen, nearly flat, with the suture indistinct ; 

 last whorl very short: aperture subquadrate: labrum scalloped 

 by the spiral ridges : canal rather wide, very short. 



Mean divergence about 20; length .13 inch; breadth .045 

 inch ; length of spire .105 inch. 



Station. Unknown. 



Habitat. Panama; C. B. AJ 

 2 specimens were found. 



