462 



As the Siboga-specimens vary considerably in both respects, I thought it may be safe to con- 

 sider them as a variety, rather than to describe them as a new species, on inconstant characters. 



Actaeon Montfort. 



1. Actaeon flanimeus Gmehn. 



Gmelin. Syst. Nat. Ed. XIII, p. 3435. 



KlENER. Coq. Viv. Vol. IX, Tornatella, p. 3, PI. i, fig. i. 



Reeve. Conch. Ic. Vol. XV, Tornatella, fig. 2. 



PiLSBRY. Man. of Conch. Vol. XV, p. 151, PI. 20 A, fig. 58, 59. 



Stat. 184. Near Kampong Kelang, South coast of Manipa-island. 36 M. Coral, sand, i Spec. 



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



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



Fam. TORNATINIDAE. 



Tornatina A. Adams. 

 I. Tornatina voliita Ouoy & Gaimard. 



QuoY & Gaimard. Voy. Astrolabe, Zool. Vol. II, p. 359, PL 26, fig. 33 — 35. 



Adams. Thes. Conchyl. Vol. II, p. 566, PI. 121, fig. 24. 



Watson. Challenger Report, Gastropoda, p. 656. 



PiLSBRY. Man. of Conch. Vol. XV, p. 195, PI. 22, fig. 29—31. 



Stat. 58. Seba, Savu, Up to 27 M. Sand, i Spec. 



Adams describes the species as smooth, Watson and Pilsbry mention fine, remote, 

 spiral striation; the Siboga-specimen is in very fine condition, it very well agrees with Pilsbry's 

 figure, but I should not call the striae remote, though they are narrower than the interstices, 

 they are not visible on that figure. Kobelt has given a coloured figure of the species, on 

 plate B of his Bttllacea^ in the second edition of the Conchylien-Cabinet ; this dorsal view, with 

 the animal, but without description, shows a more remote striation, but is less characteristic 

 than the beautiful plates, representing the empty shells in Kobelt's monograph. 



Retusa Brown. 



I. Retttsa Sibogae n. sp. PI. XXXI, fig. 3. 



Stat. 52. 9°3'.4S., 1 19° 56'./ E. Savu-sea. 959 M. Globigerina ooze, r Spec. 



Shell rather large for the genus, oval, thick, white, with raised spire. Nuclear whorls 

 broken, remaining whorls about 3, (worn), separated near the aperture and probably higher 

 on, by a narrow, channelled suture ; last whorl contracted below the suture, then flatly convex, 

 rounded near the base. Sculpture consisting* of very fine radiating or growth-striae, stronger at 

 intervals, more conspicuous on upper part of last whorl, and numerous spiral striae, which are 

 raised on the upper part, impressed on the lower part of body-whorl, the interstices are con- 



