TBiPHOEiS. Panama Sliells. 159 



Habitat. — Panama ; 0. B. A. ! 



3 mature and 2 young shells were found. 



208. Triplioris inconspiciius. Nov. sp. 



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

 into a cinereous color : 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 ihch; breadth 

 .055 inch ; length of spire .13 inch. 



Station. — Under stones near low water mark. 



Habitat. — ^Taboga and Panama; C. B. A. I 

 ■ 16 specimens were collected. 



209. Triplioris inA'cqucns. Nov. sp. 



Shell long, conic t 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. 



• •Habit&A.—V&namo, ; 0. B. A. I 

 2 specimens- were found. 



