MUREX. 



Plate XVIII. 



Species 71. (Miis. Cuming.) 



MuREx CORNUTUS. Mur. testa, clavffformi, tenui, ventri- 

 cosd, transversim subtiliter sulcata et striata, spird 

 subdepressd, suturis profundk; septifariaM varicosd, 

 variciiiis planulalis, spinis duabus tribusve caiialiculatis 

 longisdmis recurvis armatis ; cinereo-fuscd, interdum 

 nifo sonatd; canali longmiriw, spiraliter longispinoso ; 

 labro columellari tenui, erecto-expanso. 



The hokned Mukex. Shell club-shaped, thin, ventricose, 

 transversely finely grooved and striated, spire some- 

 what depressed, sutures deep ; seven-varicose, varices 

 flattened, each armed with two or three very long ca- 

 naUculated spines ; ashy l)rown, sometimes zoned 

 with fulvous red ; canal very long, armed with spiral 

 rows of long spines ; columellar lip thin, erectly ex- 

 panded. 



Variety |3. 



Testa lactea. 



Shell cream-colom-ed. 



LiNNiEUS, Syst. Nat., p. 1214. 



Hob. Mouth of the Gambia, western coast of Africa (found 

 in rocky places) ; Lieut. Babb. 



I have figured the cream-coloured variety of this well- 

 known species for the sake of novelty. 



Species 72. (Mus. Taylor.) 

 MuREX Martinianus. Mur. testa trigoiio-clavfpfonni, 

 transversim lirald, liris nodulosis, inaqwalibus ; trifa- 



riani varicosd, variciins rarupiriosis, spinis brevinscnlk; 

 luteo- vel ffriseo-ceerulescente, canali fuscescente ; aper- 

 turd ovatd, lahro dente planulato, erecto, munito ; ca- 

 nali longissimo, recto, superne spinoso. 



Martini's MuREX. Shell triangidarly club-shaped, trans- 

 versely ridged, ridges nodulous, unequal ; three-vari- 

 cose, varices few-spined, spines rather short ; yel- 

 lowish or greyish blue, canal brownish ; aperture 

 ovate, lip fmnished with an erect flattened tooth ; 

 canal very long, straight, spined towards the upper 

 part. 



Reeve, Pro. Zool. Soc, 1845 ; Martini, Conch. Cab., vol.iii. 

 pi. 113. f. 1056. 

 Murex rarispina, Sowerby (not of Lamarck.) 



Ilab. ? 



A careful examination of the description of Lamarck's 

 Murex rarispina has now led me to believe with MM. 

 Kiener and Deshayes that it more correctly applies to the 

 shell described by Mi\ Sowerby under the name of Murex 

 fornwsus. The figm'e, however, in Martini's ' Conch. Cab.' 

 to which Lamarck refers for the illustration of that species, 

 afi'ords a characteristic representation of this; and it is 

 unquestionably distinct from the Murex tribulus or any 

 species hitherto described. 



For account of Fig. 73, seethe following plate, Species 76 ; 

 and for Species 73, see Plate XIV. Fig. 60. 



June 18i5. 



