272 



KiJSTER. Martini-Chemn. Conch. Cab. Ed. II, Vol. V, Volutacea, p. 126, PI. i^c, fig. 10. 



Reeve. Conch. Ic. Vol. II, Mitra, fig. 38. 



SOWERBY. Thes. Conchyl. Vol. IV, Mitra, p. 8, PI. 3, fig. 29, 30, 31. 



Tryon. Man. of Conch. Vol. IV, p. 135, PI. 39, fig. 152. 



Stat. 240. Banda. 9 — 45 M. Black sand, coral. Lithothamnion. 4 Spec. 



The median tooth (M.) of the radula has the base concave anteriorly, semicircular 

 behind, with 2 long median cusps and 2 smaller ones on each side, all surpassing the base. 

 The laterals (i) are rather broad, with four cusps on the proximal side, these cusps are also 

 prominent. Number of rows about 60. 



I have not quoted Tryon's figures 164 and 165, representing M. pretiosa Rve. and 

 Antoniae H. Ads., which he considers, I think on insufficient grounds, as the young shell and 

 a synonym, 



21. Mitra (Scabricula) sphaerulata Martyn. 



Martyn. Univ. Conchol., I, fig. 21. 



KlENER. Coq. Viv. Vol. II, Mitra, p. 14, PI. 4, fig. 9 [scabrmscula). 



KuSTER. Martini-Chemn. Conch Cab. Ed. II, Vol. V, Volutacea, p. 41, PI. 7, fig. 8; PI. 9, fig. i, 2. 



Reeve. Conch. Ic. Vol. II, Mitra, fig. 2i7- 



SowERBY. Thes. Conchyl. Vol. IV, Mitra, p. 8, PL 3, fig. 38. 



Tryon. Man. of Conch. Vol. IV, p. 135, PL 39, fig. 158. 



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



22. Mitra (Scabricula) gracilis Reeve. 



Reeve. Proc. Zool. Soc. Lond. 1844, p. 170. » 



Conch. Ic. Vol. II, Mitra, fig. 31. 



Sowerby. Thes. ConchyL Vol. IV, Mitra, p. 8, PL 12, fig. 187. 

 Tryon. Man. of Conch. Vol. IV, p. 136, PL 39, fig. 156. 



Stat. 43. Pulu Sarassa, Postilion-islands. Up to 36 M. Coral, i Spec. 



The specimen is still young but in its sculpture is much more delicate than M. granatina 

 Lam. and the colour-pattern agrees with Reeve's fig. (1. c.) I think it wil belong to his gracilis. 



23. Mitra (Scabricula) abyssicola n. sp. PI. XIX, fig. i. 



Stat. 159. o°59'.iS., i29°48'.8 E. Halmahera Sea. 411 M. Coralsand. i Spec. 

 Stat. 306. 8°27'S., 122° 54'. 5 E. Flores Sea. 247 M. Sandy mud. 2 Spec. 



Shell elongately fusiform, with the spire longer than dorsal view of last whorl. Nucleus 

 consisting of 3 smooth whorls, subsequent whorls about 8, nearly straight or slightly convex, 

 separated by a canaliculate suture. Colour yellow to yellowish-brown, with faint traces of brown 

 streaks (not conspicuous in one specimen). Sculpture consisting of radiating ribs, crossed by 

 stronger spirals, which render the shell granose by intercrossing each other, 6 spirals on 

 penultimate whorl, the deep interstices have the appearance of being pitted; the whole shell 

 is covered with fine growth-striae. Aperture narrow, elongate, peristome thin (probably not quite 

 developed) crenulate, columellar margin with 3 oblique folds. 



26 



