EULIMID^. 261 



basal channel. E. fusiformis, Gabb. Tertiaiy, West Indies. 

 (Struct, and Syst. Conch., ii, t. 68, f. 86.) 



Genus SCALENOSTOMA, Desh., 1863. 

 Imperforate, turriculated, surface not enameled, suture mar- 

 gined ; whorls numerous, the last with carinated periphery ; 

 aperture subtrigonal, entire, a little arcuated, columella simple, 

 rectilinear, forming an angle at its junction with the lip, lip 

 obliquely', deepl}' notched near the suture. 



Isle of Bourbon. 



Subgenus Subeulima, Souverbie, 1875. 

 Shell much twisted, "not enameled, whorls margined at the 

 suture and with a series of varices on the right side, as in 

 Eulima, \ast whorl with carinated peripher}^ but the lip without 

 superior sinus. 



New Caledonia. 

 Genus NISO, Risso, 1826. 



Shell deeply umbilicated, turriculated, many whorled, polished, 

 apex acute ; whorls slightly convex, the last with angulated 

 peripher}', aperture angulated above and below. Operculum as 

 in Eulima. 



China, Philippines, W. America. 



Bonellia, Desh., 1838, and Janella, Grat., 1838, are sj-nonj^ms. 



Section Yolusia, A. Adams, 18G1. 



Shell longitudinally ribbed. 

 Section Pal^oniso, Gemmellaro, 1878. 



Shell thicker, more dilated at the base, more pupoidal in form, 

 lip with a slight posterior sinus. Secondary-. N. pupoides, 

 Geram. Lias. 



Genus HOPLOPTERON, Fischer, 1876. 

 Shell ver}- small, imperforate, elongate-turreted, shining, with 

 obtuse summit ; suture linear ; whorls continuous, the earlier 

 ones smooth, rather flattened, the others bearing on each side a 

 long, triangular, wing-like varix ; aperture rounded oval, entire, 

 lip simple, sharp. 



China. 

 The minuteness of this shell and its bizarre appearance suggest 

 that it is embryonic. It is only 1-15 mill. long. 



