192 Studies in Geology, No. 3 



Plate VIII. 



Fig. I. CardtLim (Trachycardium) peruvianum Spieker. 



2,^. Cardium (Trigoniocardia) affinis (Nelson). 



3- X2. 



4. Dosinia (Dosinidia) grandis Nelson. 



5. Clementia dariena (Conrad). 



