SOLECURTUS. 



Species 30. (Fig. a, h, Mus. Brit.) 



SoLECURTUS DoMBEi. Sol. testd elongatd, stthcequilatcmli, 

 fasciis purpureis latis radiatd; latere anticoohlongo, 

 ad terminum truncato ; latere postico pauld magis 

 expanse, ad marginem ventralem inflato ad mar- 

 ginem terminalem rotundo ; margine dorsali post 

 umhones excavato, ante umhones recto ; margim 

 ventral! medio arcuatim excavato. 



Dombet's Solecurtus. Shell elongated, subeqnilateral, 

 rayed with broad purple bands; anterior side 

 oblong, truncated at the end ; posterior side a 

 little more expanded, inflated at the ventral 

 margin, rounded at the terminal margin ; dorsal 

 margin excavated behind the umboes, straight 

 before the umboes; ventral margin excavated 

 in an arch at the middle. 



Lamarck. Anim. sans Vert. Solen, Sp. 12. 



Ilab. S. America. 



Among the numerous forms that have been referred 



to this species, the one now figured appears best to 



agree with the Lamarckean ideal. 



Species 31. (Fig. a, b, Mus. Brit.) 



Solecurtus novaculina. Sol. testd ohlong'i, trape- 

 zoided, rectd, tenui, albidd, medio pland, ad latera 

 concenirice rugatd ; latere antico breviHsculo, latere 

 postico elongato, ad terminum oblique truncato; 

 margiiie dorsali recto ; margine ventrali vix con- 

 cave. 



The Razor Solecurtus. Shell oblong, trapezoidal 

 straight, thin, whitish, flat in the middle, con- 

 centrically wrinkled at the end ; anterior side 

 rather short ; posterior side elongated, obliquely 

 truncated at the end ; dorsal margin straight ; 

 ventral margin scarcely concave. 



Benson. (Genus Novaculina.) 



7/(76. Near Calcutta. 



Species 32. (Mus. Brit.) 



Solecurtus cosirLANAxus. Sol. testd compressd, tenui, 

 albidd, epidemiide rugoso indutd ; latere antico, 

 breviiisculo attenuate, ad terminum rotundato ; mar- 

 gine dorsali subdeclivi ; latere postico elongato, 

 gradatim versus terminum eoepanso, ad terminum 

 truncato ; margine dorsali rectiitsculo ; ligamento in 

 marginem dorsalim impresse. 



The fl.^ttened Solecurtus. Shell compressed, thin, 

 whitish, covered with a rough epidermis ; anterior 

 side rather short, attenuated, rounded at the end ; 

 dorsal margin sloped downwards a little ; posterior 

 side elongated and gradually expanded towards 

 the end, truncated at the end ; dorsal margin 

 rather straight; ligament impressed into the 

 dorsal margin. 



SOWERBY. 



Hab. ? 



This species partakes somewhat of the form of 

 Pharus legumen. 



August, 1874. 



