REPORT ON THE GASTEROPODA. 391 



Triton (Simpulum) acclivis, Hutton, Cat. New Zealand Mar. Moll., p. 13, No. 33, plate, fig. 8. 



„ olearium (not of Linne), Hutton, Manual, p. 64. 



„ „ (not of Linne), Lischke, Japan. Meer. Conch., vol. i. p. 48. 



„ „ (not of Linne), Bellardi, Moll. terr. terz. Piemonte, vol. 1, p. 210. 



„ parthenopus, Kobelt, Jahrb. Malak. Gesellsch., 1878, p. 244, sp. 7. 



„ olearim (not of Linne), Seguenza, Form. terz. Calabria, p. 108, and (Triton parthenopus) 



pp. 319, 353. 



„ (Simpulum) olearium (not of Linne), Tryon, Manual, vol. iii. p. 11, pi. iii. fig. 19, pL iv. 



fig. 24, pi. v. figs. 27-29, pL vi. fig. 37. 

 Tritonium parthenopes, Dunker, Index Moll. Japon., p. 28. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 



Habitat. — From the Mediterranean and the West Indies by Africa and Brazil to the 

 Cape of Good Hope, Australia and New Zealand, Japan and Tahiti (see Lischke). 



Fossil. — From the Upper Miocene beds of Calabria onwards (Seguenza). 



I have examined a large series of the forms which, under one name or other, in various museums, 

 are attributed to this species. The examination was entered upon with a strong impression that 

 shells from localities so various as the labels indicated ought to be separated, but I utterly failed in 

 the attempt to part them. For a shallow-water species the width of distribution is certainly very 

 remarkable, and that the more so as the species is absent from the Indian Ocean. 



In regard to the name every one has felt the difficulty that exists. Mr Hanley's positive assur- 

 ance (see Ipsa Linnei Conchylia, Murcx olearium, p. 287) that the Murex olearium, Linne, is Banella 

 gigantea, Lam., makes it impossible to attach this name to the species we are examining. I confess 

 to parting with Von Salis' name of parthenopus with great reluctance, but Bom's name, as Mr Hanley 

 has already pointed out (Wood, Ind. Test., p. 127, sub voce parthenopus), has unquestionable priority. 



4. Triton (Simpulum) philomelce, Watson (PI. XIV. fig. 10). 



Triton philomelce, Watson, Prelim. Report, pt. 7, Journ. Linn. Soc. Lond., vol. xv. p. 268. 



Station 135c. October 17, 1873. Lat. 37° 25' 30" S., long. 12° 28' 30" W. Nightin- 

 gale Island, Tristan da Cunha. 100 to 150 fathoms. 



Shell. — A rather high narrow cone, with a contracted base and long reverted canal, 

 two varices on the last whorl, and a thin bristly epidermis. Sculpture : Longitudinals — 

 there are about 18 straightish ribs on the last whorl, these are fewer in number on the 

 earlier whorls ; they are rounded, a little prominent, and about half the width of the 

 shallow depressions which part them ; relatively to these the varices (of which there is one 

 on each two-thirds of a whorl) are high and prominent, though narrow ; the whole surface, 

 ribs and interstices, is rather coarsely striated with fineish rounded threads on the lines 

 of growth. Spirals — the last whorl is encircled by 6 or 7 rouuded spiral threads, which 

 on the longitudinals form blunt rouuded tubercles, pretty equally parted above ; they are 



