502 



COLLECTION FROM THE WESTERX INDIAN OCEAJf. 



the nodules. Whorls 16, straight at the sides, encircled above at 

 the suture with a prominent series of acute tubercles, and below 

 these by two or three other rows, which are much less elevated and 

 distinct ; they arc also spirally striate-sulcate. The body-whorl 

 has a swelling (scarcely a varix) on the left side opposite the outer 

 lip, terminates in a narrow and much recurved canal, and is sculp- 

 tured with about ten narrow sulci. Columella bearing a conspicuous 

 callus reflexed over the cauda, and armed within with a single sub- 

 median plait. Aperture oblique, produced above into a short, narrow 

 channel. Labrum only a very little thickened. Length 30 millim., 

 diam. 9. 



Seychelles, in 4-12 fins., and Cerf Island, Mascarenes, in 10 fms. 



This species bears some resemblance to C. articulatum, Adams 

 and Reeve, especially as regards the aperture. It may be distin- 

 guished by the prominent row of acute nodules just below the 

 suture, the corresponding series in C. articulatum being smaller, so 

 that the whorls at tbis part are narrower than below, whilst, on the 

 contrary, in the present species they are widest. 



70. Cerithium (Rhinoclavis) kochi, PTrflippi. 

 Poivre Island and He des Roches, Amirantes, in 13-20 fms. 



71. Triphoris mirifiens. (Plate XLIV. figs. T-T 1 .) 

 Deshayes, Moll. Reunion, p. 104, pi. 11. figs. 32, 33. 



Etoile Island, in 13 fms. 



This is a most curious species, on account of the prominent canal 

 behind the aperture. The apex of the spire in the single specimen 

 at hand, consisting of four whorls, is yellowish brown and finely 

 cancellated instead of noduled like the rest of the shell. 



72. Triphoris monilifer. 

 Hinds, Voy. l Sulphur ; p. 30, pi. 8. fig. 14. 



Etoile Island, in 13 fms. ; Straits of Malacca (Hinds). 



73. Triphoris elegans. 

 Hinds, Voy. ' Sulphur? p. 20, pi. 8. fig. 11. 



Distribution the same as preceding species. 



74. Triphoris maxillaris. 

 Hinds, Voy. ' Sulphur,' p. 29, pi. 8. fig. 8. 



Darros Island, in 22 fms. ; also Straits of Malacca (Hinds). 



75. Stromhus rnauritianus, Lamarck. 

 Marie-Louise Island. 



