PHYLLONOTUS. Ill 



there are small tubercles on the lower part of the columella. 

 White, the fronds tinged with brown. 



Philippines; Upolu, Nuvigator^s Islands. 

 Mitrex {Trophon) fruticosus, Gould, (fig. 288), is the same 

 species, described from worn specimens. In the index to his 

 latest monograph of Murex (Thes. Conch.) Sowerby refers this 

 species, doubtfully, to Purpura. 



M. EURACANTHUS, A. Ad. PI. 30, fig. 281. 



This differs from the preceding, (with which it has been con- 

 founded by Reeve), in the double series of short fronds being 

 replaced by long, straight, hollow spines. 



Length, 'TS inch. 



It is probably only a well-developed specimen of M. nod- 

 uliferus. Hab. unknown^ 



Sowerby (Index to 3Iurex, Thes. Conch.) refers it to Purpura 

 doubtfully. . 



M. ciRROSus, Hinds. PI. 30, fig. 285. 



Six to nine varicose, crossed by about six ribs, forming sharp, 

 spinous processes — these form a coronal on the shoulder. Light 

 brown, varices whitish. Length, -tS inch. 

 Sts. of Macassar, in sand and fine gravel, 15 fathoms — Hinds. Japan. 



Except by locality it is hard to distinguish this from M. exi- 

 guus, Broc. 



M. RUSTicus, Reeve. PI. 30, fig. 286. 



Shell solid, tuberculately varicose, fronds short ; yellowish 



white, the varices chestnut. Length, "9 inch. 



Hab. unknown. 



M. INTERSERRATUS, S^wcrby. PI. 30, fig. 284. 



Varices seven, very short fronded, hooked at the shoulder of 

 the shell; distantly spirally li rate, the interstices of the ridges 

 serrated with small scales. Yellowish brown. 



Length, 21 mill. Hab. unknown. 



M. LAMINIFERUS, Reeve. PI. 30, fig. 283. 



Eight varicose , whitish, with a brown band around the upper 

 part of the body. Length, 1 inch. 



Hab? 



Probably this is not an adult shell. 



