INDETERMINATE MURICES. 135 



Indelermiiiate Mu rices. 



M. ACANTHOPHORUS, Montcrosiito. Xamed but not described. 

 There is a Phijllonotus acnnf/iopJionis, A. Adams (described in 

 Zool. Proc, 3*12, 1862), from Jni);in. Monterosato's species is 

 from the Mediterranean. 



M. CYCLOPUs, Benoit. M.S8. Quoted bv Monterosato as a 

 Mediterranean species, but not characterized. 



M. ciNGULATUS, Lam. Hal). '! This shell lias not been identi- 

 fied. Sowerby thinks it a Fusu)^. 



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



TATUs; all described by Anton in his Verzeichniss, 1834, have 

 never been identified. Xo localities of any of them are given. 

 Not figured. 



The following species are described by Mr. Arthur Adams in 

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

 dimensions ju-e given in most of these descriptions, nor are they 

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

 generic groups. 



* Witfi several varices. 



M. ARMATUS (CruJfof Lkilifornia}, rosTOMUS (Philippines). 



* Shell plicate. 

 M. EXCAVATUS, Pagodus, SEROTINUS {Soiit/i Aiislralia., Angas). 

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

 FASCIATUS (Japan). 



M. PUMILUS, Brod. 



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



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



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



Qallaparjos la., found under stones. 

 Probably a young shell. 



M. OSTREARUM aiid 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 revolvino- 

 lines or costse, the interstices with transverse wrinkled lines, 



