290 STYLIFER. 



merit from the excrement of the urchin, and that its suctorial 

 proboscis, and the absence of a radula or jaw supports this view. 

 It is Pliasianella stylifera, Turton, S. astericola, Brown, and 

 S. globosus, Johnston. 



S. ASTERICOLA, Brod. PI. 71, fig. 38. 



Ovate globose, spire short, acuminated ; whorls few, the apical 

 ones minute, lip sinuously produced above. Length, 10'5 mill. 



Galapagos Is/., on Astcrias helianthus. 



S. Broderipii, Adams, is a synonym. 



S. OVOIDEUS, H. and A. Adams. PI. 11, fig. 39. 



Subglobose, spire moderately produced ; whorls convex, the 

 apical ones very minute ; aperture pyriform, outer lip slightly 

 compressed above, sinuously produced. Length, 11 mill. 



Borneo, on an Asterias. 



This is S. astericola, Ad. and Reeve, not Brod., but I really 

 can see no valid differences between this and the two preceding 

 species. 



S. ORBIGNYANUS, Hupe. PL 71, fig. 40. 



Short, ovate, inflated, pellucid, very shining, yellowish white ; 

 whorls 7, well-rounded, with deep suture. Length, 6 mill. 



Australia. 



Found -imbedded in the deformed spire of Cidaris imperialis. 



S. DUBIA, Baird. PI. 71, fig. 41. 



Shell globose, spire produced, pyramidal, acuminated, apical ; 

 whorls attenuated. Length, 6'5 mill. 



New Caledonia. 

 S. MITTREI, Petit. PI. 71, fig. 42. 



Yery smooth, pellucid, yellowish white; whorls 7-8, rounded, 

 suture profound. Length, 11 -5 mill. 



Indian Seas (Mitt re.), Polynesia (Pease). 



I have received from Mr. Pease, under his MS. name of Mucro- 

 nalia tumida, a shell which I refer to this species. 



S. EBURNEUS, Desh. PI. 71, fig. 43. 



Ivory-white, very shining, polished ; whorls 9, the first two 

 cylindrical, the others very convex, with deep linear sutures. 



Length, 10 mill. 



Isle of Bourbon. 



