INDETERMINATE MURICES. 135 



Indeterminate Mu rices. 



M. ACANTHOPHORUS, Moiiterosato. Named but not described. 

 There is a Phyllonotus acantJwphorus, A. Adams (described in 

 Zool. Proc., 372, 1862), from Japan. Monterosato's species is 

 from the Mediterranean. 



M. CYCLOPUS, Benoit. MSS. Quoted by Monterosato as a 

 Mediterranean species, but not characterized. 



M. CINGULATUS, Lam. Hab. ? This shell has not been identi- 

 fied. Sowerby thinks it a Fusus. 



M. NANUS, ACUMINATUS, L^EVICOSTA, ALBICANS, AURANTIUS, DEN- 



TATUS; all described by Anton in his Yerzeichniss, 1834, have 

 never been identified. No localities of any of them are given. 

 Not figured. 



The following species are described by Mr. Arthur Adams in 

 Zool. Proc., London, 1851-3. Neither distinctive characters nor 

 dimensions are given in most of these descriptions, nor are they 

 figured. I am unable to locate them positively in any of the sub- 

 generic groups. 



* With several varices. 



M. ARMATUS (Gulf of California), IOSTOMUS (Philippines). 



* Shell plicate. 



M. EXCAVATUS, PAGODUS, SEROTINUS (South Australia, Angas). 

 EXASPERATUS, DIADEMA (Philippines), NITENS (Philippines), UNI- 

 FASCIATUS (Japan). 



M. PUMILUS, Brod. 



Rhomboidal, five varicose, varices flattened, short, subrecurved, 

 crenulate ; dark brown, subfasciate with white ; canal moderate, 

 subrecurved ; lip crenulate. L. 5 inches, lat. 3 inches. 



Gallapagos Is., found under stones. 

 Probably a young shell. 



M. OSTREARUM and M. CELLULOSA, Conrad. Tampa Bay, Fla. 



I am unable to identify the very inadequate descriptions with 

 any species ; they are as follows : 



M. CELLULOSA. Short-fusiform, with large, prominent revolving- 

 lines or costse, the interstices with transverse wrinkled lines, 



