240 



Inoceramus Moresbyensis. (Noin. Prov.) 



Fig. 11. Inoceramus Moresbyensis. Outline of an imperfect left valve to shew 

 the alation of the hinge line behind the beaks. 



Shell moderatel}^ convex in front, especially in the nmbonal region, 

 and obliquely compressed behind : posterior dorsal margin abruptly 

 inflected. Height somewhat greater than the length, greatest length 

 just below the winged expansion of the hinge-line above : anterior 

 margin shallowly concave immediately under the beaks and somewhat 

 convex below : ventral margin roundednarrowlyin front and obliquely 

 as well as more broadly so behind : posterior margin obliquely convex 

 below, straighter and widening outwards above. Hinge margin appar- 

 ently ascending above, behind the beaks, in such a manner as to form 

 a thin alate prominence or expansion whose exact outline is not known 

 but whose posterior margin seems to have been obliquely truncated or 

 subtruncated : beaks anterior, terminal, cui'ved inwards and forwards. 



Surface marked with numerous, veiy irregular and rarely continuous 

 Bubconcentric plications. 



North shore of Cumshewa Inlet, Moresby Island : a few imperfect 

 specimens. 



