MUREX. 1 5 



but the latter has a much longer spine and shorter canal. 

 Mr. Reeve's shell, of which I have a fine example before me, 

 must be regarded as a good species. 



64. torrefactus, f. 47, Sowerby. — Testa trivaricosa, ven- 

 tricosa, subaugulatim fusiformis spiraliter scabroso liratis, 

 rubrofusca, rubro-nigrescente teniata, varicibus crassiusculis, 

 frondibus brevibus, nigrescentibus spinoso-subramosis ; an- 

 fractibus productis, ultimo magno, cauda brevi, lata, aper- 

 tura magna, labio denticulato. — In comparison with M. 

 affinis and M. palma-rosce, M. twvef actus has a larger body 

 whorl and aperture, a much more produced spire, separated 

 whorls and shorter and broader canal. 



65. microphallus, f. 49, 50, Lamarck. — Testa subangu- 

 latim fusiformis, crassis, fulva vel fusca, rubro vel nigro 

 fasciata, inter varices prominente bicostata, spiraliter scabro- 

 lirata, liris ad costas valide tuberculatis ; varicibus crassis, 

 obliquis, brevissime frondosis; frondibus anterioribus sub- 

 palmatis; cauda brevi, lata. — Differing from M. torrefactus, 

 affinis, and maurus in the strongly wrinkled and tubercu- 

 lated character of the ribs. 



66. maurus, f. 54, Broderip. — Testa trivaricosa, fusca, 

 rubro-nigrescente fasciata, angulatim fusiformis crassis, inter 

 varices bituberculatis ; varicibus rotundis, crassis brevissime 

 frondosis; frondibus roseis, superioribus subobsoletis, infe- 

 rioribus obtusis, brevibus; canali brevi; labio externo crenu- 

 lato. — A thick shell, with the upper trends scarcely, and the 

 lower ones shortly developed. 



67. GrUBBi, f. 75, Reeve. — Testa fusiformis subtrigona, 

 nigrescens, spiraliter angulatim lirata et striata, liris irre- 

 gulariter tuberculatis, spira acuminata, anfractibus angulatis 

 supra angulum concavis; varicibus frondosis, frondibus 

 angustis, irregularibus, una mediana bifurcata, una superiori 

 producta, falcata; apertura cinereo-alba, labio externo, intus 

 conspicue dentato. — The conspicuous teeth near the margin 

 of the aperture, the angularity of the ribs, the concavity of 

 the whorls near the suture and the peculiar greyblack colour 

 of all but the aperture, distinguish this species from all 

 others. 



68. strigajus, f. 81, Reeve. — Testa subtrigono-fusiformis 

 fusca, castaneo strigata, spiraliter lirata, inter varices ob- 

 scure bituberculata, varicibus regulariter frondosis, frondibus 

 novenis, subcequalibus florescentibus, denticulatis. — Remark- 



