42 



Bulletin 14 



308 



CHAZY FOSSILS 



Explanation of Plate 18 



Page. 



Fig. I. Triplecia gracilis n. s\). A brachial valve 37, 303 



2. Lingida brainerdi n. ^^. A partially exfoliated 



specimen showing radiating lines 36, 303 



A fragment of another specimen showing the 



surface markings. 

 Ecculioniphalus fredericus n. sp. A specimen 



preserving a part of the shell 39, 305 



Rafinisq2iina chaniplainensis n. sp. A pedicle 



valve 37, 303 



A side view of the same showing the great 



convexity. 

 Bucania chaniplainensis Whitfield. Looking 

 down upon a somewhat crushed speci- 

 men, showing the outline of the lip 39, 305 



8. Another view of the same specimen, showing 

 the notch in the lip and the surface 

 markings. 



9. IllcBnus ovatus Conrad. The figure is that of a 

 specimen from which the eyes and spines 

 have been broken. 



10. Maclurea 7nag7ia Le Sueur. A small specimen 

 preserving the surface markings and show- 

 ing the gradual expanding of the volu- 

 tions 39, 305 



