116 OCINEBRA. 



M. RORIFLUUS, Adams and Reeve. PI. 35, fig. 390. 



Light chocolate-brown, the varices white, lip-tooth prominent. 



Length, 1-3 inches. 



Core a. 

 Evidently a young shell. 



M. FESTIVUS, Hinds. PI. 35, fig. 383. 



Whitish, closely encircled by incised lines, which are brown, 

 varices reflexed, widely laminar, crossed by close rows of elegant 

 semicircular scales. No tooth. Length, 1-5-2-5 inches. 



California. 

 Subgenus Ocinebra, Leach. 



This group, as well as Muricidea, is made by Messrs. Adams 

 an omnium gatherum, including true Murices, purpuroid Murices, 

 Purpurae, Fusidse, etc. Muricidea as defined by them has no 

 really distinctive characters from Ocinebra, and Swainson in- 

 cluded species of Trophon, Triton, etc. I have suppressed 

 Muricidea, and retained Ocinebra for a group of small Murices 

 with numerous varices and purpuroid operculum ; the species 

 having muricoid operculum are relegated to Phyllonotus, from 

 which they do not differ. A number of species the operculae of 

 which are unknown, are ranged arbitrarily in Phyllonvtus or 

 Ocinebra, and with regard to these I claim the indulgence of 

 brother conchologists who may have similarl}' found themselves 

 in the predicament of being compelled to place something some- 

 where just to get it off their hands. 



#*x European Group. 

 M. ERINACEUS, Linn. PI. 36, figs. 400-404. 



Four to seven varicose, nodulous, encircled by prominent 

 cord-like, raised ribs, alternately smaller, the smaller ones 

 minutely scabrous ; varices sometimes frondose, sometimes 

 lamellated, occasionally appressed. Occasionally the larger re- 

 volving ribs thickly overlap the varices, forming a succession of 

 elongated nodules (var. torosus (fig. 404). Yellowish-brown ; 

 whitish within. Length, 1*5-2 inches. 



Europe, from Norway to Black Sea, Azores, Madeira ; range, shore to 

 30 fathoms ; fossil in European tertiaries and quarternaries. 



