169 

 Stat. 200. Bara-bay, North coast of Buru-island. Up to 54 M. Mud and stone. 7 Spec. 



Rather variable in the bands, which are more or less broad and distinct, this latter 

 difference may however be due to the state of freshness of the shell, though they are all 

 living specimens. 



Cerithiopsis Forbes & Hanley. 

 I. Cerithiopsis (Seila) Versluysi n. sp. PI. XI, fig. 7. 

 Stat. 231. Amboina. Reef, i Spec. 



Shell small, turriculate, brown, with about 10 postnuclear, flat whorls, the nuclear ones 

 wanting; each whorl with three spiral ribs, of which the upper and basal ones are thick, the 

 median one is narrower, the interstices are wider than the ribs, distinctly radiately striate; on the 

 last whorl the number of spiral ribs amounts to five, two ribs appearing below the peripheral one : 

 moreover two small intermediate striae appear towards the aperture. Suture not conspicuous. 

 Aperture subquadrangular, right margin straight, simple, but not sharp; columellar margin 

 smooth, with a rather thick layer of enamel, upper corner of the aperture with an entering 

 rib, formed by a continuation of the most basal of the lirae, canal short, rather wide, directed 

 towards the left. 



Alt. 51/3, lat. 2 Mill. 



This small species may be allied to C. dextroversa Ads., by its sculpture consisting of 

 3 carinae of which the central one is smaller, but that species is whitish, much larger and has 

 a larger number of whorls, for even if complete, the new species scarcely could have more 

 than 1 2 whorls. 



Argyropeza Melvill & Standen. 



I. Argyropeza divina Melvill & Standen. PI. XV, fig. 11. 



Melvill & Standen. Proc. Zool. Soc. Lond. 1901, p. 372, PI. 21, fig. 3. 



Stat. 139. o°ii'S., I27°25'E. Molucca-Passage. 397 M. Mud, stones and coral. I Spec. 

 Stat. 312. Saleh-bay, North coast of Sumbawa. 274 M. Fine, sandy mud. 7 Spec. 



Part of the specimens is slightly larger than the type described by Melvill and Standen, 

 moreover they are more or less variegated with brown. The operculum is rounded-oval, with 

 many whorls, I think about 8, of which the outer ones are broad, the central ones so small 

 that I cannot count them with accuracy. 



The radula is exceedingly small and of difficult observation, its breadth being scarcely ^6 

 of a Mill., its length could not be ascertained, as it fell to pieces, but it may not have exceeded 

 Ya Mill. The rhachidian tooth (R) has a broad, subquadrangular shape, with curved sides, the 

 cusp has one larger denticle and three smaller ones on each side, it seems that along the 

 basal margin, runs a narrow very indistinct zone, but by the excessive thinness, I am not quite 

 certain about this, the laterals (i) have an elongately subrhombical shape, the cusp has one 



6r 



