220 



var. s7idconcolor_ v. Martens. . . ' 



V. Martens. Beitr. zur Molluskenfauna der Insel Mauritius. Moll. p. 290. 



KlENER. Coq. Viv. Vol. IX, Solarium, PI. 3, fig. 5a [liybridwn var.). 



Philippi. Martini-Chemn. Conch. Cab. Ed. II, Vol. II, Solarium, PI. 2, fig. 14, 15. 



Stat. 172. Gisser. Reef, i Spec. 



This specimen perfectly agrees with the figure. 



Fluxina Dall. 



1. Fluxma marginata n. sp. PI. XIV, fig. 2. 



Stat. 241. 4°24'.3 S., 1 29° 49'. 3 E. Banda Sea. 1570 M. Dark sand with small stones. 2 Spec. 



Shell whitish, thin, very depressed, conic, sharply keeled at the periphery, postnuclear whorls 

 about 5, spirally divided into 2 parts, convex above but concave if taken as a whole, nucleus 

 umbilicate; sculpture consisting of very faint spiral striae, crossed by stronger, undulate, riblike, 

 rather distant ones, with faint growth-striae in the interstices; these riblike striae are less 

 conspicuous on the last whorl; the lower part of each whorl has the appearance of a broad 

 margin, slightly concave above, separated from the upper part of each whorl, by a kind of 

 spiral rib, which is slightly crenulated, this marginal part is sculptured by rather conspicuous 

 spiral and stronger, oblique, but nearly straight, riblike radiating striae, which on the upper 

 part make the keel slightly crenulate (on the largest specimen the keel is smooth, on account 

 of the less conspicuous sculpture); basal part of last whorl convex, with a few more or less 

 conspicuous spiral striae around the umbihcus, and faint, strongly curved, radiating striae; margin 

 separated from the central part by a deep groove, with about 7 spirals and faint growth-striae. 

 Umbilicus large, pervious, scalar, bordered by a strong rib which is surrounded by a deep groove, 

 umbilical wall perpendicular. Aperture rhombic, with convex upper, outer and basal margins; keel 

 protracted in a claw in the younger specimen, columellar margin excavated, slightly thickened, 

 angular below near the umbilical keel, and forming there a somewhat tongue-shaped triangle. 



Alt. 37.J, lat. 87,; apert. alt. r/,, lat. 27^ Mill. 



Alt. 37„, lat. 8; apert. alt. 17^, lat. 27,^ Mill. 



This is the second species of Fluxina from the Indian Ocean, quite different from the 

 described species, by the broad margin at the periphery ; the claw-like angle of the aperture 

 and the umbilical rib, have induced me to locate it in this genus. 



2. Fluxina trochiformis n. sp. PI. XIV, fig. 3. 



Stat. 178. 2°40'S., 128° 37'. 5 E. Ceram Sea. 835 M. Blue mud. i Spec. 



Shell white, thin, conic, sharply keeled, whorls about 6, nucleus slightly umbilicate, post- 

 nuclear whorls with very fine curved growth-striae, nearly smooth, nearly straight, but slightly 

 convex in the upper part, slightly concave near the lower suture, the whorls are prominently keeled 

 above the suture, the keel being finely crenulate. Base a little convex, excavated towards the 

 peripheral keel, with three fine spirals at some distance from the periphery and a few, scarcely 



