EXPLANATION OF PLATE XL. 



IXCCERAMUS PROXIMUS Tuomev, p. 424 



1-2. Views of two incomplete specimens. (After Whitfield.) 

 Merchantville clay-marl; Keyport. 



3. An incomplete specimen illustrated by Whitfield. 



Wenonah sand; Holmdel. 



4. View of an incomplete left valve. 



Merchantville clay-marl; near Jamcsburg, (141). 



5. View of an incomplete right valve preserving the shell. 



Marshalltown clay-marl; near Swedesboro, (177). 



INOCERAMUS sp. 



6. View of an incomplete left valve. 



Navesink marl; Crosswicks Creek, (147*). 



962 



