siurex. 41 



lamina parva fimbriate; canali brevi, aperto, angusto. — It- is 

 rather doubtful whether the longitudinal ribs or plaits be 

 real varices, consequently whether the species belongs to the 

 genus. 



190. alteatds, f. 232, Kiener. — Testa albida oblongo- 

 pyvamidata, liris validis et varicibus septenis profunde 

 cancellata ; spira elongata, anfractibus subangulatis ; apertura 

 parva, margine externo lato fimbriato ; canali brevi lato 

 margine imbricate. — A broadly and deeply cancellated shell 

 of a pyramidal form, with the last varix at the aperture 

 broadly fringed. 



191. EP.ostJS, f. 231 , Broderip. — Testa oblongo-pyramidata, 

 violacea, spiraliter sulcata, inter sidcos cancellata, spira 

 elongata, anfractibus angulatis irregulariter varicosis, ultimo 

 valide bivaricoso, superne ad suturam et infra medium ex- 

 cavate, plicis septiformibus foveolato ; varicibus crassis, tuber- 

 culatis ; apertura parva, canali brevi, lato.— The last whorl 

 lias two varices like a Banella, but the upper whorls have 

 more. 



192. ctclostoma, f. 227, Sowerby.— -Testa breviter-sub- 

 fusiformis, albida intus violacea, spiraliter costata et inter- 

 laciniata ; varicibus senis crassis, fimbriato-cancellatis superne 

 subangulatis ; spira subprodueta, anfractibus rotundo-angu- 

 latis, apertura ovata, margine externo antice crenato, canali 

 breviusculo, rectiusculo. — More fusiform than M. breviculus, 

 with a more produced and straight canal. The sculpture is 

 neither so deep nor so coarse. 



192 *. NrcTLA, f. 227, Reeve. — Testa quam M. cyclostoma 

 magis ovata, magis angusta, canali retrorsim elevato. — After 

 much hesitation I have concluded to retain this as a separate 

 species. It is of a much more oblong-ovate form and has the 

 canal recurved towards the back. 



193. Crossei, f. 230, Lienard. — Testa brevis, subglobosa, 

 alba, lasvis, inter varices late et prominente bicostata ; varicibus 

 senis prominentibus crassissimis, interstitiis profunde foveo- 

 latis; apertura subovata violacea; spira brevi, anfractibus 

 quatemis, prominentibus, ad canalem contractis ; canali 

 brevi, lamina discoidea excavata. — An extremely short species 

 with two very thick spiral ribs between the varices, which are 

 much swollen, having deep pits behind. 



194. inebmis, f. 235,- Sowerby.— Testa fusiformis alba, 



a 



