68 

 ii. Calliostoma (Astele) monodon n. sp. PI. VI, fig. 2. 



Stat. 95. 5°43'.5 N., U9°4o'E. 522 M. Stony bottom. 3 Spec. 



Shell conical with slightly convex sides, perforate, yellowish-white. Whorls 6, slightly 

 convex, nucleus smooth, the other whorls sculptured by numerous concentric ribs and spiral 

 lirae, about 9 in number on the penultimate whorl, producing a cancellated appearance; where 

 they cross, they form small tubercles. Last whorl angular at the periphery. Base flat, sculptured 

 by 1 2 spiral lirae and by radiating riblets, which make the inner 9 lirae beaded, the outer ones 

 beino- crenulated. Umbilicus small, funnel-shaped, pervious, with smooth walls. Aperture rhombic, 

 upper margin nearly straight, thin, thickened interiorly by a broad, white rib, with a few short 

 plicae; basal margin slightly convex, with a few inconspicuous plicae and a strong tooth near 

 the columella, forming the end of an internal rib, winding round the columella. Columella nearly 

 straight, its upper part thickened, covering part of the umbilicus, parietal wall with a thin 

 layer of enamel. 



Alt. 4 :, / 4 , diam. maj. 5 1 /.,; apert. alt. 2, lat. 2 8 / 4 MUI. 



The generic position of this species is a little uncertain, I know of no species to which 

 it is allied ; it is very remarkable by the tooth at the base of the aperture, which is only 

 developed in one of the three specimens, the other ones being young. 



12. Calliostoma (Perrinia) Elisa Gould. 



Gould. Proc. Bost. Soc. Nat. Hist. 1849, p. 92. 



Pilsbrv. Man. of Conch. Vol. XI, p. 417, PI. 67, fig. 67, 68, 69, 74. 



Stat. 49". Sapeh-strait. 70 M. Coral and shells. 1 Spec. 



Stat. 64. Kambaragi-bay, Tanah Djampeah. 32 M. Coral, coralsand. 2 Spec. 



Stat. 71. Makassar and surroundings. Up to 32 M. Mud, sand with mud. 2 Spec. 



Stat. 260. Near Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells. 1 Spec. 



Stat. 313. East of Dangar Besar, Saleh-bay. Up to 36 M. Sand, coral and mud. 8 Spec. 



Stat. ? 1 Spec. 



As Pilsbry mentions as localities Singapore and China, it is not strange to find this 

 species also on different spots of the East Indian Archipelago, however it has not yet been 

 recorded from there, as far as I know. 



13. Calliostoma (Perrinia) squamocarinatum n. sp. PI. VI, fig. 3. 



Stat. 51. Madura-bay. 69 — 91 M. Fine grey sand; coarse sand with shells and stones. 2 Spec. 

 Stat. 260. Near Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells. 1 Spec. 



Shell elevated-conical, with slightly convex sides, yellowish grey, with dark brown spots 

 at the upper part of whorls and below the periphery; whorls 6 1 /.,, slightly convex, with a 

 prominent keel, narrowly perforate. Nucleus rather smooth, blunt, foliowed by a whorl which 

 is simply costate, the other whorls have 3 spiral lirae, crossed by ribs, which form blunt spines 

 on the upper spiral, round beads on the median one and compressed, spinelike squamae on 

 the third spiral or peripheral keel ; on the last whorl these ribs become lamellose and doublé, 



6S 



