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This species seems to be allied to C. sublacve Smith (Ann. Mag. Nat. Hist. Ser. 6, Vol. 16, 

 1895, p. 8, PI. 1, fig. 12) and still nearer to its var. Chuni v. Martens (Die beschalten Gastrop. 

 der deutschen Tiefsee-Exp. 1898 — 99, p. 121, PI. 4, fig. 13), hut differs by its much more 

 developed sculpture, which covers the vvhole upper surface of the shell in the new species. Only 

 by a large number of intermediate forms, it might prove to be an extreme form of C. sublaeve. 



4. Calliostoma sp. 



Stat. 45. 7°24'S., ii8°i5'.2E. 794 M. Fine grey mud, with radiolariae and diatomes. 1 Spec. 



Certainly a very interesting species, but unfortunately too much broken for description ; 

 the lower whorls are smooth at the upper part of the supraperipheral slope, with a doublé 

 spiral rib at the periphery and another strong one, about half way the whorls. These spirals 

 are sculptured by fine spiral and concentric, elevated striae, so the shell, if in good condition, 

 must be of exquisite beauty. 



5. Calliostoma quadricolor n. sp. PI. V, fig. 7. 



Stat. 49'. Sapeh-strait. 69 M. Coral and shells. 1 Spec. 



Stat. 257. In Du-roa-strait, Kei-islands. Till 52 M. Coral. 1 Spec. 



Shell elevated-conical, with slightly concave sides, imperforate, yellowish, with a greenish 

 tinge, the peripheral keel articulated with white and rufous, spire purplish at the top; whorls 7, 

 flat, nucleus nearly smooth, under the lens with a few rows of pits, other whorls with spirals, 2 

 on the upper whorls, increasing to 7 on the last whorl ; these spirals are crossed by concentric 

 ribs, connecting the spirals and producing beads in crossing them, the lowest, bicoloured spiral 

 of each whorl is the strongest, the beads on it becoming spiny, and forms a conspicuous keel 

 on the last whorl, it is doublé. Base flat, with 1 3 unequal spirals, crossed by numerous radiating 

 ribs, making them beaded. Aperture rhombic, upper margin straight, basal one slightly convex, 

 columella cylindrical, slightly concave, angular at its junction with the basal margin, outer wall 

 grooved interiorly by about 5 shallow grooves. 



Alt. S 1 ^, diam. maj. 7; apert. alt. 3, lat. 3 Mill. 



As I could not identify this shell, I begged Mr. E. A. Smith to compare it for me. 

 According to his observations it is allied to, but not identical with C. scoóinatus Ads. which is 

 more convex at the base and differs in colour. 



6. Calliostoma (Astele) virgo n. sp. PI. V, fig. 8. 



Stat. 122. i°s8'.5N., i25°o'.5 E. 1165 — 1264 M. Stony bottom. 1 Spec. 



Shell conoidal, perforate, white; whorls 6 1 /.,, convex, lower ones slightly concave below 

 the suture; nucleus rather smooth, next whorls with from 2 to 4 weak spiral lirae below the 

 suture, crossed by weaker radiating ribs, and with 2 or 3 stronger lirae on the lower part of 

 each whorl, with a faint intermediate one, on the penultimate and last whorl, the spiral lirae 

 increase in number, to about 10 weaker spirals on the upper part and 4 or 5 stronger ones 



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SIBOGA-EXPEDITIE XL1X 1 a. Q 



