20I 



var. hipponyciformis Reeve. 



Reeve. Conch. Ic. Vol. XI, Calyptraea, fig. 26. 



Tryon. Man of Conch. Vol. VIII, p. 238, PI. 24, fig. 40, 41. 



Stat. 240. Banda. 9 — 45 M. Black sand, coral, i Spec. 



A most variable species. I have identified the specimens as well as possible, with the 

 aid of the figures of Reeve's monograph. Only the specimen from Stat. 225 contains the soft 

 parts, the other ones are dead shells, which is especially of interest for the specimen from 

 Stat. 59, which probably will not have lived at that great depth. , 



2. Mitrularia costifera n. sp. PL XII, fig. 11. 



Stat. 116. West of Kwandang-bay-entrance. 72 M. Fine sand with mud. i Spec. 



Shell small, suborbicular, thin, depressedly convex, white; nucleus subcentral, but placed 

 a little at the posterior part, smooth, spiral; a zone around the nucleus is sculptured by fine 

 radiating striae, the remaining part of the surface is sculptured by strong radiating ribs, about 

 23 in number, separated by rather deep grooves or interstices, about as broad as the ribs; the 

 ribs project at the margin and make it conspicuously denticulate, they are slightly nodulous and 

 waved and are covered, as well as the interstices, with radiating striae. Interior of shell smooth, 

 slightly grooved bj' the ribs. Cup-shaped lamina much broken. 



Long. 9, lat. 91/3, alt. 3Y„ Mill. 



I am not at all proud of this new species, as it is slightly defective, part of the outer 

 shell and of the internal lamina wanting. Moreover I suppose it may be still rather young. As 

 I failed to identify it with any of the known species, I asked the opinion of Mr. E. A. Smith, 

 who has at his disposal the types of the numerous species described by Reeve; the result 

 was that Mr. Smith declared it to be new. The most characteristic feature is the presence of 

 comparatively strong ribs, conspicuously surpassing the margin of the shell. The dorsal view 

 calls in mind some flat specimens of Amalthea conica Schum. 



Fam. Capulidae. 

 Crepidula Lamarck. 

 I. Crepidula (Siphopatella) Walchi Herrmannsen. 



Herrmannsen in Reeve. Conch. Ic. Vol. I, Crepidula, fig. if. 



Tryon. Man. of Conch. Vol. VIII, p. 130, PL 38, fig. 56—58 {Walshii). ■ 



Stat. 273. Pulu Jedan, East coast of Aru-islands. 13 M. Sand and shells, i Spec. 



This is as far as I am aware the first record from the East Indian Archipelago. Tryon's 

 enumerated localities are Ceylon, Singapore, China Sea, Japan. I can see no differences from 

 my Japanese specimens. 



93 



