52 COLLECTIONS FROM MELANESIA. 



37. Sistrum tuberculatum. 



Purpura tuberculatum, BlainviUe, Nbuv. Arch, du Mm. vol. i. 1832, 



p. 204, pi. ii. fie. 3. 

 Ricinula tuberculata, Reeve, Conch. Icon. fig. 11. 

 Purpura tuberculata, Kiener, Cot/. J'ir. pi. ■'>. fig. 10. 

 Purpura granulata, Duclos, Ann. Sci. Nat. 1832, vol. xxvi. pi. 2. 



tig. 0. 

 ? Purpura niarginalba, BlainviUe, I. c. p. 212, pi. 10. fig. 6. 



//nb. Lord Hood and Elizabeth Islands (Cuming) ; Madagascar 

 and Red Sea (Blainvill >; New Holland and the Friendly Islands 

 (Kiener); Port Essington, Port Jackson, Brisbane, Japan, Stewart 

 Island, and Lord Hood's Island (Brit. Mas.) ; Port Molle and Port 

 Curtis, Queensland (Cojppinger) ; Seychelles and Amirantes Islands 

 (Dafo); Reunion (Deshayes) ; Mauritius (Martens). 



38. Latirus angustus. (Plate V. fig. F.) 



Shell narrow, fusiform, of a rich brown colour. "Whorls 11 .7 ; the 

 two apical ones smooth, forming a bluntish apex, tbe rest strongly 

 ribbed and spirally ridged. Ribs a little oblique, very broad, 

 rounded, with scarcely any interstices, not reaching the upper 

 boundary of the whorls. Transverse lirae or ridges strong : three 

 principal ones on the upper whorls ; the uppermost, or that almost 

 bounding the suture, a little wavy, scarcely affected by the longi- 

 tudinal costse ; the two others situated round the middle of the 

 whorls, prominent, and rather acute on the ribs ; between these 

 are fine thread-like lirse, generally one in each interstice. Last whorl 

 similarly lirated throughout with large and small ridges. The entire 

 surface of the shell exhibits between the transverse lira? coarse lines 

 of growth. Aperture small, subpyriformly ovate, brownish white 

 within, with about four slender white lirae not reaching to the 

 margin of the labium, which is crenulatcd and dotted with brown 

 at the ends of the exterior ridge. Columella covered with a promi- 

 nent brownish callosity bearing two fine transverse plaits, one at the 

 middle and the other below it. Canal almost straight and nearly 

 closed. Length 38 millim., diameter 9. 



Hub. Fitzroy Island, Queensland (Coppinger) ; Andaman Islands 

 (teste G. B. Sowerby,jun.). 



This species may be recognized by its slender form, in which 

 respect it somewhat resembles L. lancea. Viewed with the un- 

 assisted eye, the whorls appear to be encircled by three transverse 

 prominent lira?, of which the uppermost is nearly simple, whilst 

 the two inferior ones are undulate upon and betwecu the ribs. 

 The specimen said to have come from the Andaman Islands, appa- 

 rently adult, is smaller than that from Queensland, being 20 millim. 

 long and 6| broad, but in other respects similar. 



