l62 



DESCRIPTIONS OF TWO NEW SPECIES OF 



SHELLS: MUREX MARCOENSIS AND 



CASSIS BOOLEYI. 



By G. B. SOWERBY, F.L.S. 



Murex marcoensis, n. sp. 

 Testa clavasformis, rufo-aurantia, antice purpurco tincta ; spira 

 mediocriter data, acute conica ; anfractus Gh, cunvexi, primi 3 — 4 



Murex narcoensis, n. sp. 



longitudinaliter confertim costati, deinde trivaricosi, sub-distanter 

 crassicostati, undique spiraliter lirati, varicibus crassiusculis, rotundatis^ 

 hie illic brevissime spinosis ; anfractus ultimus superne obtusissime 

 angulatus, infra constrictus ; rostrum sub-elongatum, rectiusculum, 

 superne breviter spinosum, infra medium glabratum, purpureo tinctum, 

 ad extremitatem albidum ; apertura rotunde ovalis, intus albida 

 crenulata; labrum serratum, extus crassivaricosum ; columella callosa, 

 polita, inferne leviter plicate rugosa. 



Long. 31, diam. 16 mm. 



Hah. — Marco, Florida. 



I have been unable to indentify this species with any of its 

 congeners. The specimens are prettily coloured, pink and reddish 

 orange, tinged with purple in the middle of the rostrum, which is 

 tipped with white. The varices are very sparingly spined, and some 

 specimens not at all, excepting at the upper end of the rostrum. 

 Compared with M. chrysostoma this shell is uniformly much smaller, 

 narrower in proportion, less angular, and different in colour. 



Cassis booleyi, n. sp. 



Testa ovata, fulvo-albida, maculis numerosis quadratis rufo-fuscis 

 quadriseriatim dispositis ornata ; spira mediocriter elata, conica. 



