PLATE V. 



Page 

 Fig. 1. Cardita lacunar 53 



1 a. Left side view. Natural size. 



1 6. Same, showing lacunaria between posterior ribs. ) Enlarged three and a 

 1 c. Right side view of a larger shell. ) half diameters. 



1 d. Dorsal view of shell represented by Figs. 1 a, b. Natural size. 



1 e. Same. Enlarged four diameters. 



Fig. 2. Isocardia Merrilli 43 



2 a. Left side view of cast. Badly placed through misunderstanding 



of artist. 

 2 b. Anterior view of same. ^ Natural size. 



2 c. Anterior view of another cast, better showing pallial line, pits, 



and muscular scars. 



Fig. 3. Cyprina orientalis .............. 44 



3 a. Left side view of the only cast. 

 3b. Anterior view of the same. 



}" 



atural size. 



Fig. 4. Vola Syriaca CoNBAD sp 61 



4 a. Outer view of lower (right) valve. Natural size. 

 4 6. Same. Enlarged about one diameter aild a half. 

 4 c. Outer view of upper (left) valve. Enlarged about one diameter and a half. 



