131 
HALIOTIS. 
Character, page 53. 
TAB. LVIUI. 
HALIOTIS CRACHERODUH. 
H. supra cerulescente-niger, umbone laterali-dorsali ; 
interne margaritaceus iricolor. 
Habitat in California. 
CRACHERODIAN EARSHELL. 
Bluish-black above, umbo _|ateral-dorsal ; internally 
pearly and iridescent. 
The specimen from which the annexed figure is taken, 
forms a part of that splendid collection of shells bequeathed 
to the British Museum by the late Rev. C. M. Cracherode, 
whose name it bears. It is said to be a native of the Cali- 
fornian coast, and is generally esteemed a rare species. 
The Rev. S. Weston, possesses a specimen of this shell, 
which he purchased as a production of the Greenland sea ; 
the above locality, however, is most probably correct. 
