rmcoREUS. 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. 102), 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. PI. 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. ANGULIFERUS, Lam. PI. 17, figs. 165,166; pi. 24, figs. 213,216. 

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

 tinguished lay their pyriform, angulate shape and short spines. 

 M. anguliferus 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. ponderous, Chemn. (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. Senegalenms principally in having only 

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



