94 BOOK OF SPECIES. 



long beak slightly bent upwards ; aperture nearly 

 as the last ; but the membrane somewhat purplish. 

 2^. W. 26. 46. 



T. RUBECULA. Oblong, thick, with granulated 

 transverse ribs, and their interstices decussated 

 and darker than the reddish orange which is the 

 ground of the shell; varices frequently marked 

 with white ; spire obtuse ; pillar bright orange, 

 striated with white ; lip white within and den- 

 tated; beak shortish. IJ. W. 46. 42. 



T. UNDosuM. Ovate -acute, thickish, white, 

 with many glabrous brown spiral belts; the body- 

 whorls plaited longitudinally ; mouth white, with 

 the lips furrowed within, and thickened ; beak 

 short. IJ. W. 23. 97. 



LES AILEES. 



ROSTELLARIA. 



Shell fusiform or sub-turreted, terminated infe- 

 riorly in a canal, with a pointed beak; Up 

 entire or dentated, more or less dilated by aye, 

 with a sinus contiguous to the canal, 



R. PESPELiCANi. Turreted, greyish red, with 

 the whorls angularly nodulous at the centre ; lip 

 glabrous, and expanded into three more or less 

 channelled claws; channel of the base oblique. 



