Quart. Journ. Geol. Soc. Vol. LXVlll, Pl. XXXII. 



1. 



J. W. Tutcher, Photo. 



Bemrose, Collo, Derby. 



PTERONIDIA PLICATULA, gen. et spec, nov., and 

 CRYPTOVENIA MOYSEYl, gen.et spec. nov. 



