}foUusca from the Island of Beilan-Beilan. 4?>7 



Cyclotus beilanensis, sp. n. 



Shell rather small, clepresseclly turbinate, pinkish-livid, 

 painted with an infra-peripheral band of blackish brown, and 

 covered with a coarse, chestnut-brown, finely scabrous peri- 

 ostracum ; whorls 3^, the earlier whorls (when seen under a 

 1-inch objective) bearing traces of fine spiral liration and the 

 last two rather finely, transversely costulate ; suture impressed, 

 umbilicus somewhat wide, deep ; labrum simple, the margins 

 converging-, a polished, well-defined, parietal callus stretching 

 between the two; aperture circular; operculum white, calca- 

 reous, slightly concave, multispiral, with central nucleus and 

 obliquely, transversely laminiferous, grooved below round 

 the outer margin. 



Alt. 4'5, diam. maj. 9, diam. min. 7 25 mm. 



Aperture: alt. 4, diam. 4 mm. 



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

 Islands, Dutch East Indies {Mr. Diepenheim). 



Plaiyraphe iredalei, sp. n. 



Shell (as seen under a 1-inch objective) small, discoidal, 

 yellowish white below its coarse agglutination of foreign 

 matter; whorls 3, the first two horny, considerably exserted, 

 the last calcareous, planulate, sculptured with slightly oblique 

 transverse costulse, all three being spirally Urate ; suture 

 impressed; umbilicus broad, open; labrum simple, acute, 

 continuous; aperture circular; operculum calcareous, con- 

 cave, laminiferous, multispiral, with smooth, central, rather 

 shallow, cup-like nucleus. 



Alt. 2, diam. maj. 5, diam. min. 375 mm. 



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



The al-ove dimensions are calculated as far as possible to 

 exclude the agglutinated matter. 



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

 Islands, Dutch East Indies [Mr. Diepenheim). 



Diplommatina radiiformis, sp. n. 



Shell (as seen under a 1-inch objective) small, radii form, 

 rather solid, flesh-coloured above, shading to pale yellow 

 below ; whorls 7, the first five convex, regularly increasing. 

 the sixth considerably swollen and angled at the periphery, 

 the last decreasing in breadth and scarcely angled, the first 

 two smooth, the remainder obliquely, transversely costulate, 

 the interstices sculptured with slightly wavy spiral stria 1 : 



