462 Journal of the Asiatic Society of Bengal. [N.S., X1V.1918.] 
account of its habits, for it insinuates itself into cavities on the 
lower surface of stones. 
EXPLANATION OF PLATE XII. 
Camptoceras terebra, Benson. 
Fras. 1, la.—Shell of paratype from Moradabad, Rohilkhand, 
ULP.; «10. 
Camptoceras, sp. nov. 
2, 2a.—Shell from Kogamura, Osaka district, Japan ; x 10. 
“ 
~~ 
Camptoceras austeni, Blanford. 
3, 3a.—Shell of paratype from the Dacca district, Bengal ; 
x 10. 
“ 
7 
Omia japonica (Preston). 
4, 4a.—Shell " Bd specimen from Lake Biwa, Japan; 
“ 
v 
» 5.—Jaw of same individual (highly magnified). 
PNR SS eR NU ee 
