103 



wax coloured on the lower part of the whorla: with 

 three spiral ridges, of which the middle one is more 

 elevated; and on each whorl about 33 small transverae 

 ridges; with the intersections nodulous; with a fourth 

 ridge which ia sHghtly nodulous at the periphery of the 

 last whorl, anterior to which are only incremental Striae j 

 apex acute: spire with the outhnes moderately curvili- 

 near; whorls 12, moderately convex, with a well im- 

 pressed suture; last whorl abruptly terminating, concave 

 anteriorly; aperture broadly ovate: labrum very thin, 

 well advanced along the middle : canal very short, nearly 

 straight, with a broad deep notch behind." Ad. 



„Long, spirte (),,, poll. : tot. 0,„ poll. lat. 0,^^ 

 poll." Ad. 



Cerithium genmiulosum Ad. Contr. p. 120. 



Cerithium gemmulosum Sowb. Thes. p. 879. Nr. 

 136. f. 238? 



Cerithiopsis gemmulosa Ad. Dkr. Mal. Gesellsch. 

 1875. p. 244. 

 Hab. Jamaica fAd.) Desterro (Dkr.) N. America (Sow.) 



„Affinis C. neglecto" Sowb. 

 249. Bittium (Platygyra?) latum Ad. 



„Sh. conic above, cylindric below: whitish, with a 

 Spiral brown band occupying the suture and the upper 

 apiral ridge, on which however the granules are white: 

 with three spiral ridges, of which the lower one is a 

 little larger, and very small transverse ridges, which are 

 developed on the spiral ridges into very large nodules; 

 anteriorly with an additional nodulous ridge: apex acute: 

 spire "with the outlines quite curvilinear in the upper 

 three fifths: whorls 7, of which two are nuclear and 

 smooth, slightly convex, with an indistinct suture; last 

 whorl nearly as large as the penult whorl, terminating 

 rather abruptly: aperture broadly ovate; labrum Avell 

 excurved, moderately thickened: canal very short and 

 wide, nearly straight." (Ad.) 



