338 



the genus Columbella\ in colour and partly in sculpture and shape, its nearest ally is no doubt 

 Conus atramcntosus Reeve (Conch. Ie. Conus; Suppl. fig. 265), which has been located by 

 Pace (Proc. Mal. Soc. Lond. Vol. V, 1902, p. 56) amongst the Columbellidae, and Hidalgo 

 follows him in this opinion, in the catalogue of the mollusca of the Philippines (1904 — 06, p. 88), 

 placing them in the group of C. dormitor Sow. From C. atramentosus it differs by its much 

 narrower shape, the most elongate of my Philippine specimens having a length of 11 1 /,, a 

 breadth of ó 1 /^ Mill. ; in that species I find the same wrinkles in the interior of aperture, on the 

 contrary, I see no tracé of them in my West Indian specimens of Col. dormitor. If the columella 

 were really plicate, one could think these species were Mitroid, the shape reminding some 

 species of Cylindra, which have however in all my specimens a smooth outer margin and 

 strongly plicate columella, the columellar part is more like that of Dibaphus. Dall (Rep. 

 dredging "Blake" Vol. II, p. 165) brings Col. dormitor to Mitromorpha and indeed many of 

 the characters enumerated there are applicable to the present species; this would locate it 

 amongst Pleurotomidae, unless Dall's impression "that these shells are related to Mitra rather 

 than Daphnella etc." be right. Unfortunately I cannot detect the soft parts, in order to try to 

 settle the question, by examining the radula. 



23. Columbclla (Conidea) atramentosa Reeve. 



Reeve. Conch. Ie. Vol. I, Conus, Suppl. PI. 7, fig. 265. 



SOWERBY. Thes. Conchyl. Vol. III, Conus, p. 47, PI. 14, fig. 317. 



WEINKAUFF. Martini-Chemn. Conch. Cab. Ed. II, Vol. IV, Conus, p. 382, PI. 70, fig. 18, 19. 



TRYON. Man. of Conch. Vol. VI, p. 85, PI. 26, fig. 64. 



Stat. 315. East of Sailus Besar, Paternoster-islands. Up to $6 M. Coral and Lithothamnion. 

 2 Spec. 



After the description of the former species was ready for the press, I found amongst 

 the species of Conus two specimens of C. atramentosus, which I had provisionally classified 

 with the species of that genus, but ought consequently to be located here. One of them is 

 broad, the other considerably narrower, its length being 8 l / 2 , its breadth 4 1 /» Mill. and so still 

 sufnciently different from the former species, which is more oval. Both specimens are empty, 

 somewhat bleached shells. 



Fam. Muricidae. 

 Trophon Montfort. 



1 Trophon obtuscliratus n. sp. PI. XXI, fig. i; PI. XXIV, fig. 5. 



Stat. 45. 7°24'S., n8°i5'.2E. Flores Sea. 794 M. Fine grey mud. 4 Spec. 

 Stat. 52. 9°3'.4S., H9°56'.7E. Savu Sea. 959 M. Globigerine ooze. 3 Spec. 

 Stat. 211. 5°4o'.7S., I20°45'.5 E. Banda Sea. 118 M. Coarse grey mud. 1 Spec. 

 Stat. 271. 5°46'.7S., i34°o'E. Arafura Sea. 1788 M. Bluish green mud. 3 Spec. 

 Stat. 306. 8°27'S., I22°54'.5E. Flores Sea. 247 M. Sandy mud. 1 Spec. 



92 



