PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 



PAGE 



Fig. 9. CRASSATELLITES LYELLI (Sow.) . . . . . . 123 



Patagonian beds ; mouth of Santa Cruz River. 

 ga. Outer view of left valve. 

 9<5. Inner view of the same. 



Fig. 10. CRASSATELLITES KOKENI (v. Ih.) 123 



Patagonian beds ; mouth of Santa Cruz River. 

 ioa. Outer view of right valve. 

 lob. Inner view of the same. 



All of the figures, unless otherwise stated, are natural size. 



(VOL. iv) 



