PLATE IV. 



Page. 



Gryph/EA vesiculabis Lamarck :?(i 



Fig. 1. Exterior view oC a spoeinien whicli somewhat ai>pron(Iie8 (1. Pilcheri in form. 



2. View of the upper side of the same. 



3. View of the upper .sitle jf a hirge llat furui having a (loop lateral ehannel. See 



PI. V, Fig. 2, for profile. 



liiii.osciii/.A CRETACEA Coiuad 43 



1' igs. 4 and !S. Views of a broad speciiuou doubtfully of the species. 

 C-8. Copies of Mr. Conrad's figures of the type ni' the speeics. 



Anomia argentaria Morton 4vi 



I'ig. St. View of a large sjjecimeu referred to this .species. 



10. View of a valve having the specific niarlcings ilescrihed liy Or. .MimIoii. 



11. An enlargement of tlie surface of tlir same. 



Anomia telunoides Morton i;' 



Fig. 12. View of a group of lower valves of this species. 



13. Upper surface of a east of both valves, showing the form of the perforation and 

 indistinct wrinkles near tlio border of the valve. 



276 



