2 28 



oval, slightly angular above, right margin slightly broken, probably varicose in the adult sh< -11 . 

 columellar margin thickened below, refl< over the umbilical region. 



Alt. 1 i. lat. 3 ; apert. alt. 2. lat. i Mill. 



This species has superficial resemblance with the preceding one, luit lias a much coarser 

 sculpture and is much k-ss shouldered. 



Nierstraszi n. sp. 

 i'.i S., i-'i 48'.8 E. Halmahera Sea. 411 M. Coarse sand. 1 Spec. 



Shell small, pyramidal, imperforate, solid, white: nucleus wanting; remaining whorls 7 

 moderately convex, with a distinct but no deep suture; sculpture consisting of impressed spiral 

 striae and fine radiating ones over the whole surface, if not rubbed of; ribs strong, thick, 

 ed by the spiral striae. ten on last whorl; the last very thick rib bordering the aperture. 

 il rib of last whorl strong; base slightly excavated, sculptured with faint spiral striae, crossed 

 bj the growth-striae. Aperture circular with a nearly smooth, rather thick internal lip. bordi 

 on the right and part of basal margin, by a broadly expanded flat varix, with the same 

 sculpture of the outer surface of shell. 



Alt. 6 1 /,, lat. incl. perist. V ,: diam. of apert. i'/, ; Mill. 



I know no species allied to this beautifully sculptured shell. 



17. Scala (Cirsotrema) sp. 



Stat. 153. o°3'.8N., I30°22'.3E. North off Waigeu-island. 141 M. Fine and coarse sand with 

 dead shells. 2 Spec. 



Both specimens are young, they have some resemblance with the upper whorls of S. 

 Kieneri Tap. Can. but are different in their sculpture, which is very fine; as even the apertures 

 are incomplete, I have abstained myself from naming and describing them, though they probably 

 ng to a new species. 



120 



