MUREX.— Plate XVI. 



culo magno prominulo inter varices ; trivaricosd, vari- 

 cibus pUcato-laminatis, supeniefalcatis, ad basem alatis; 

 ulbd,fmco hie illic punctata.; aperturd parm ; canali 

 longittscido. 



The Gambia Murex. Shell fusiform, attenuated at the 

 lower pai-t, rather solid, transversely obsoletely stri- 

 ated, with a large prominent tubercle between the 

 varices ; three-varicose, varices plicately laminated, 

 hooked at the upper part, winged at the base ; white, 

 dotted here and there with brown ; aperture small ; 

 canal rather long. 



Keeve, Pro. Zool. Soc, 1845. 



Hab. Mouth of the Gambia, west coast of Africa. 



Closely allied to the Murex pinniger, but of a more 

 elongated structure, and different style of colouring. 



Species 66. (Mus. Cuming.) 



Murex cervicornis. Mur. tedd fuuformi, transvermn 

 liraid et striata ; trifariam varicosd, varicibus frondo- 

 sis,froudibus erectis, superioribus bifurcatim elongatis ; 

 alhd ; aperturd sttbroiundd ; canali longimculo,recurvo. 



The stag's horn Murex. Shell fusiform, transversely 

 ridged and striated ; three-varicose, varices fi'ondose, 

 fronds erect, upper ones bifurcately elongated ; white, 

 aperture nearly round ; canal rather long, recurved. 



Lamarck, Anim. sans vert.(Deshayes'edit.),vol.ix.p.575. 



Hob. ? 



A rare and elegantly formed species, well distinguished 

 by the curious two-forked gro\Tth of the upper fronds of 

 the varices. 



