DRILL! A ALBOTUBEBCULATA. 239 



NOTE LI. 

 DESCRIPTION OE A NEW SPECIES OE DRILLIA. 



BY 



M. M. SCHEPMAN. 



Drillia (Clavus) albotuberculata, Schepman. 



Shell elongate , dark fleshy brown , with large white rib- 

 like nodules and a white infra-sutural line; whorls 10, 

 the apical ones a little eroded, smooth, the next 2 with 

 rather indistinct ribs, the rest with conspicuous white 

 nodules , which become larger up to the last whorl ; on this 

 whorl , which is somewhat oblique , they are smaller on the 

 ventral side, it shows a very large nodule before the 

 aperture and a second row of much smaller ones, which 

 are not visible on the upper whorls. The surface of the shell 

 is covered with faint spiral lirae , which are more distinct on 

 the nodules. Suture linear , irregular in consequence of the 

 nodules of which there are 9 on the last whorl, besides 

 12 of the second row, and 6 or 7 on the upper whorls, 

 where they occupy nearly the whole breadth, except a 

 narrow zone at the upper part of each whorl. Aperture 

 rather small, the interior white with fleshy brown spots 

 near the margin, sinus large, rounded, not deep, lip 

 thin, arcuate and prominent, slightly crenulate. Canal 

 very short and large , columella slightly curved , with a brown 

 callosity, its lower extremity produced, near the suture with 

 a strong tubercle. 



Length 42, diam. 20 mill. Length of the apert. 17 mill. 



Habitat unknown. 



Notes from the Leyden Museum, Vol. XI. 



