122 MITRA. 



M. QUOYI, Desh. PI. 36, fig. 71. 



Shell smooth, with faint impressed revolving striae ; epidermis 



black. Length, 20 mill. 



New Ireland. 



This species, described and figured by Quoy under the name 

 of M. nigra, is very different from the previously described M. 

 nigra of Chemnitz, and is scarcely equivalent to that figured by 

 Reeve ; it is, then, an unidentified species. I give a copy of one 

 of the original figures. 



M. ABBREVIATA, Sowb. PL 36, fig. 69. 



Smooth, faintly striate at base ; epidermis black. 



Length, 28 mill. 



New Zealand. 

 Name proposed for M. nigra, Reeve (not Chemn. nor Quoy). 



M. NITIDA, A. Ad. PI. 36, fig. 73. 



Smooth, chocolate-brown, with a few impressed revolving 



lines. Length, '5 inch. 



Habitat unknown. 

 Probably a worn, juvenile specimen. 



M. INFRAFASCIATA, Souverbie. PI. 36, fig. 72. 



Smooth, slightly striate near the base ; brownish black, with a 

 yellowish band on the periphery, visible within the brown aper- 

 ture. Length, 8-9 mill. 



New Caledonia. 

 Two specimens obtained. 



M. FUSCA, Swainson. PI. 36, fig. 75. 



Smooth, very finely striated with punctures near the apex ; 

 slightly striate at the base, body-whorl slightly contracted in 

 the middle ; epidermis very dark brown, sometimes lighter 

 beneath the sutures. Length, 1-1-75 inches. 



Madeira, Atlantic Coast of Portugal and 80. France. 



M. Adansonii, Phil., described as from Gabon, in Guinea, W. 

 Africa, appears to agree fairly with this species ; it has not been 

 figured nor alluded to by the monographers. 



M. CORNICULA, Linn. PI. 36, figs. 74, 76-81. 



Horny brown ; smooth, impressed striae at the base. 

 Length, 1-1-25 inches. 



Mediterranean Sea ; Atlantic Coast of N. Africa. 



