CHICOREUS. 93 



agrees in all particulars with specimens of M. axicornis before 

 me from undoubted East Indian localities, as well as with pub- 

 lished figures of that species by Sowerby and Reeve. I do not 

 doubt its identity. The Swift collection, the largest West Indian 

 collection of shells in existence, contains nothing like this form, 

 and I cannot help thinking there must be some mistake about the 

 locality. M. spectrum, Reeve, (fig. 162), of which there is a 

 single specimen in the Cumingian collection is also a synonym 

 and M. aculeatus, Lam., (fig. 164), is scarcely different enough to 

 constitute a variety. 



M. RUBESCENS, Brod. PL 16, fig. 160. 



Thick, fusiform; varices tuberculate, with a few very short 

 fronds; one large rib between varices. Orange red, the tubercles 

 and revolving lines brown. Length, 1'8 inches. 



Coral Reefs, Taheiti. 



M. ANGULTFERUS, Lam. PI. IT, figs. 165,166; pi. 24, figs. 213,216. 

 This may be regarded as the type of a series of species dis- 

 tinguished by their pyriform, angulate shape and short spines. 

 M. anc/yJiferus has usually only one very prominent node 

 between the varices, and the mouth is bordered with pink. The 

 surface is either light brown with sometimes a medial, darker 

 band, or dark brown, not banded the latter forming the var. 

 ferrugo (fig. 166). It is the largest species of the group, 

 measuring nearly 4 inches. 



Red Sea, Ind. 0., Seychelles, Isle Bourbon. 



I follow Sig. Tapparone-Canefri,who has made a special study 

 of the Murices of the Red Sea, in making M. Erythrseus, Fischer, 

 a synonym of this species. M. cyacantha, Sowb. (fig. 213), is 

 also a synonym, and M. ponderosvs,Cheiam. (fig. 216), is a small, 

 thick-shelled variety. 



M. CLAUSII, Bunker. PI. 24, fig. 214. 



Shell yellowish-brown, more or less clouded with light choco- 

 late color, chocolate within the aperture. Length, 2'5 inches. 



Gulf of Guinea, W. Africa. 



Said to differ from M. Senegalensis principally in having only 

 a single intervariceal node, more tumid and. turbinate form, etc. 



