1 68 CRETACEOUS PALEONTOLOGY. 



Porina quadrangularis G. & H. 

 Porina coronata (Reuss) ? 

 Lepralia aspera G. & H. 

 Mucronella muralis (G. & H.). 

 Mucronella typica (G. & H.). 

 Mucronella aspera Ulr. 

 Mucronella pumila (G. & H.). 



Brachiopoda. 



Cistella beecheri Clark. 

 Platidia cretacea n. sp. 



PELECYPODA. 



Gryphaea sp. 



Gryphaeostrea vomer (Mort.) . 



Polorthus tibialis (Mort.) 



Gastropoda. 



Pleurotrema solariformis Whitf. 



Crustacea. 



Callianctssa sp. 



In addition tO' the above species, the following are recorded 

 from this formation at Vincentown, but have not been collected 

 by the writer: 



Echinodermata. 



Pentacrinus bryani Gabb. 

 Pentaca'os asperulus Clark n. sp. 

 Salenia tuiiiidula Clark. 

 Trematopygus crucifer (Mort.) 

 Ananchytes ovalis Clark. 

 Hemiaster parastaius (Mort.). 

 Hemiaster Stella (Mort.) 

 Hemiaster ungula ( Mort. ) 

 Linthia tumidula Clark. 



