622 



Contributions to Invertebi^ale Palaeontology. 



PAQB 



Pupa Vermilionensis Bradley.... 608 



Pupa vetusta Dawsou GOli 



Receptaculites Devonicus Whitf. 519 



Retzia formosa H 512 



Rhynchonella hydraulica Whitf. 512 



Rhynchonella raricosta Whitf..., 522 



Schizodus Chesterensis M. & W. 587 



Spirifera contracta M. k W 583 



Spirifi'ra Maia Billings 54!) 



Spirifera(Martinia)lineataMartin 603 



Spirifera Rookymontaiia Marcou 584 



Spirifera Vanuxemi Hall 509 



PAOB 



Spirifera ziczac Hall 554 



Spirorbis anthracosia Whitf 608 



Straparollus similis M. & W 589 



Streptorliynchus crassum Muek.. 580 



Streptorhynehus flabellum Whitf. 521 

 Streptorhynohus hydraulicum Wf. 508 



Stylastrea Anna Whitf 520 



Synocladia rectistyla Whitf 579 



Terebratula tiirgida Hall 586 



Trematoceras Ohiocnse Whitf. ... 528 



Zeacrinus Mooresi Whitf 507 



