436 Mr. II. B. Preston on 



Hendrikia mirifica, sp. n. 



Shell (as seen under a 1-inch objective) minute, laterally 

 compressed, ovate, with turrite, exserted spire, the nepionic 

 whorls greyish, the remainder dark chestnut, the last orna- 

 mented with three broad spiral bands of a pale brownish 

 colour; whorls 7, the first two mamillary, the third small; 

 the fourth, fifth, and sixth regularly increasing, the seventh 

 large ; the last five whorls sculptured with moderately 

 closely set, transverse costulas which in places appear to be 

 pitted ; suture impressed ; umbilicus very narrow ; columella 

 margin outwardly curved, broad ; labium simple ; aperture 

 slightly oblique, narrow, elongate, bearing on the parietal 

 wall an elongate tooth, and a large depression just below the 

 median part, below which is situate a hollow and rather deep 

 lamella-like tooth entering the shell at right angles to the 

 tooth above ; the columella is armed with a broad, entering, 

 and somewhat concave lamella, and below this a projection 

 which entirely bars the extreme base of the aperture, while 

 on the inner margin of the outer lip are situate five denticles, 

 of which the first and fourth from above are very small (the 

 latter being rather more interiorly situate than the others) 

 and the fifth or lowest the largest, with an upwardly curving 

 tendency. 



Alt. 3*25 (nearly), diam. maj. 2 (nearly), diam. min. 

 1*25 mm. 



Aperture: alt. 1, diam. '5 mm. 



Hab. Island of Beilan-Beilan, to the north of the Obi 

 Islands, Dutch East Indies (Mr. Diepenheim). 



Melanopsis dos 1 sp. n. 



Shell small, decollated, fusiform, ovate, dark olive, indis- 

 tinctly banded on the last whorl with dark brown; remaining 

 whorls 2, the last long, subangulate above and below the 

 periphery, marked with line transverse growth-plications ; 

 suture lightly impressed ; columella margin vertically 

 descending, slightly curved above, rather abruptly truncate 

 below ; la brum simple ; aperture elongate, narrow above, 

 broadening in the median part, bearing a coarse whitish 

 callosity on the upper portion of the parietal wall. 



Alt. 5, diam. maj. 2*75, diam. min. 2*5 mm. 



Aperture : alt. 3, diam. "75 mm. 



Hab. Island of Beilan-Beilan, to the north of the Obi 

 Islands, Dutch East Indies (Mr. Diepenheim). 



