124 OCINEBRA. 



short, closed. Yellowish, with a brown blotch on the shoulder 

 between each varix ; aperture and columella tinged with pink. 



Length, -75 inch. 



Hab. unknown. 



This species is perhaps wrongly placed in Ocinehra ; it has 

 some resemblance to Tritonidea (Pisatiia) and might, perhaps, 

 be ranged with M. cinei~eus (Fusus), Say, in the genus Urosal- 

 pinx, which seems to occupy an intermediate position between 

 Ocinehra and Tritonidea. Untbrtunatel}^ the animal and oper- 

 culum are unknown. 



**^ Group of M. lugubris. Distribution, Pacific ; Japan ; North and 



South America. 

 M. LUGUBRIS, Brod. PI. 37, figs. 438-440. PL 38, figs. 455, 45(5. 



Six varicose, varices rather narrow, somewhat laminate, 

 crossed by wide, rather flat ribs and intervening sulcations ; 

 spire turrited, spiny nodose ; body whorl shouldered, the varices 

 raised into curved spines on the shoulder ; canal rather short, 

 closed. Chestnut-brown, the sulcations usuall}^ darker. 



Length, 1-25 inches. 

 Peurto Portrero, W. G. of Gent. Am., in coral rocks. Magdalena Bay, 

 Low. Gal. ; dredged from a sandy floor, 7 fathoms.— Hinds. Guaya- 

 quil, muddy floor, 21 fathoms. —Hinds. 



I include with this species M. calignosus., Reeve, (fig. 455), M. 

 kamatua, Hinds, (fig. 439), and M. peritus, Hinds, (fig. 438), the 

 latter being the young. Its nearest affinities are with M. erina- 

 ceus, of Europe. M. erinaceoides, Yal., from the Gulf of 

 California has also been likened to M. e W?7 ace ws, and in all 

 probability should be referred to M. Ivgubris instead of to M. 

 alveatus, Kiener, with which Carpenter has likened it. Another 

 synonym is M. Barharensis., Gabb., which is thus described : 

 Brown ; whorls shouldered ; varices five to nine, not A^ery prom- 

 inent except on the shoulder, where they are sometimes prolonged 

 into a recurved spine ; whole surface covered with strong revolv 

 ing ribs, crossed by fine squamose plates ; aperture sub-elliptical, 

 lip with a broad varix and five or six internal dentations ; canal 

 closed, straight or a little recurved. 



Length, -77, lat. "44 inches. 



Gaialina Isl., 40 fms., Santa Barbara Ghannel, 20 to 30 fms. 



Also post-pliocene. 



