1498 BULLETIN -92, UNITED STATES NATIONAL MUSEUM. 



Mxlonoceras arcticameratum (Hall). (G.) 

 Marsipocrinus prsematurus (Hall and Whitfield). 



(G.) 



Megalomus canadensis Hall. (G.) 

 Megalomus compressus Nicholson and Hinde. (G.) 

 Melocrinus sculptus (Hall). (L.) 

 Modiomorpha acuminata Parks. (G.) 

 Monomorella durhamensis Whiteaves. (G.) 

 Monomorella egani Hall and Clarke. ( G . ) 

 Monomorella greenei Hall and Clarke. (G.) 

 Monomorella newberryi Hall and Whitfield. (G.) 

 Monomorella noveboracum Clarke and Ruedemann. 



(G.) 



Monomorella orbicularis Billings. (G.) 

 Monomorella ortoni Hall and Clarke. (G.) 

 Monomorella ovata Whiteaves. (G.) 

 Monomorella ovata lata Whiteaves. (G.) 

 Monomorella prisca Billings. (G.) 

 Murchisonia?? billingsana Miller. (G.) 

 Mytilarca acutirostra (Hall). (G.) 

 Oncoceras pettiti BiUings. (L.) 

 Oncoceras teucer Billings. (L.) 

 Orthoceras brontes Billings. (L.) 

 Orthoceras carltonensis Whitfleld. (G.) 

 Orthoceras oberon Billings. (L.) 

 Orthoceras pylades Billings. (L.) 

 Orthoceras rectum Worthen. (G.) 

 Orthoceras remus Billings. (L.) 

 Orthoceras selwyni Billings. (G.) 

 Orthoceras sublxve D'Orbigny. (G.) 

 Orthoceras varro Billings. (L.) 

 Pentamems oblongus bisinuatus (McChesney). (G.) 

 Periechocrinus speciosus (Hall). (L.) 

 Phanerotrema occidens (Hall). (G.) 

 Phragmoceras hector Billings. (G.) 

 Phragmoceras ncstor canadcnse Whiteaves. (G.) 

 Phragmoceras parvum (Hall and Whitfield). (G.) 

 Phragmoceras whitneyi Parks. (G.) 

 Pleurotomaria cyclostoma Whiteaves. (G.) 

 Pleurotomaria townsendii Whiteaves. (G.) 

 Poleumita crenulata (Whiteaves). (G.) 

 Poleumita durhamensis (Whiteaves). (G.) 

 Poleumita hudsonica Parks. (G.) 

 Poleumita macrolineata (Whitfield). (G.) 

 Poleumita parvula (Whiteaves). (G.) 

 Poleumita scamnata Clarke and Ruedemann. (G.) 

 Poleumita? sulcata (Hall). (G.) 

 Poleumita viola (Billings). (G.) 

 Poterioccras sauridcns Clarke and Ruedemann. (G.) 

 Prolucina galtensis (Whiteaves). (G.) 

 Protokionoccras crebescens Hall. (G.) 

 Protokionoceras medullare (Hall). (G.) 

 Protokionoceras trusitum (Clarke and Ruedemann). 



(G.) 

 Protophragmoceras patronus Clarke and Ruedemann. 



(G.) 



Pterinea bradti Grabau. (G.) 

 Pterinea undata (Hall). (G.) 

 Pycnomphalus solar ioides (Hall). (G.) 

 Pycnostylus elegans Whiteaves. (G.) 

 Pycnostylus guelphensis Whiteaves. (G.) 

 Rhinobolus galtensis (Billings). (G.) 

 Rhipidomclla hybrida (Sowerby). (Ij., G.) 

 Rhynchotreta cuneata americana Hall. (L.) 

 Rosenella glenclgensis Parks. (G.) 

 Scenella conica Whiteaves. (G.) 

 Schizotreta tenuilamellata (Hall). (L.) 



Septameroceras septore (Hall) . ( G . ) 

 Spirifer (DeltUyris) crispus (Hisinger). (G.) 

 Spirifer (Eospirifer) radiatus (Sowerby). (G.) 

 Stictopora graminifolia Ringueberg. (Gas.) 

 Straparollina daphne (Billings). (G.) 

 Straparollus hippolyta Billings. (G.) 

 Straparollus niagarensis Hall and Whitfleld. (G.) 

 Streptoceras heros Billings. (L.) 

 Streptoceras janus Billings. (L.) 

 Streptomytilus eduliformis Clarke and Ruedemann. 



(G.) 



Stricklandinia multilirata Whitfleld. (G.) 

 Stromatopora antiqua (Nicholson and Murie) 



(L. G.) 



Stromatopora galtensis Dawson. (G.) 

 Stromatoporella elora Parks. (G.) 

 Stromatoporella elora minuta Parks. (G.) 

 Subulites compactus Whiteaves. (G.) 

 Subulitcs terebriformis Hall and Whitefleld. (G.) 

 Tremanotus alpheus (Hall). (G.) 

 Tremanotus angustatus Hall. (G.) 

 Tremanotus f trigonostoma Halland Whitfield. (G.) 

 Trimerella acuminata Billings. (G.) 

 Trimerella billingsiDall. (G.) 

 Trimerella dalli Davidson and King. (G.) 

 Trimerella grandis Billings. (G.) 

 Trimerella ohiocnsis Meek. (G.) 

 Trochoceras costatum (Hall). (G.) 

 Trochoceras desplainense McChesney. (G.) 

 Trochoncmafatuum (Hall). (G.) 

 Trochonema pauper ohioense Hall and Whitfield. 



(G.) 

 Troostocrinus subcylindricus (Hall and Whitfield). 



(G.) 



Turritoma boylei (Nicholson). (G.) 

 Turritoma constricta (Whiteaves). (G.) 

 Tyrellia severnensis Parks. (G.) 

 Whitfieldclla hyale (Billings). (G.) 

 Whitfleldella nitida (Hall). (G. L.) 

 Zaphrentis racinensis Whitfield. (G.) 

 Zaphrentis turbinata (Hall). (L.) 



NTAGARAN (RACINE) OF ILLINOIS AND WISCONSIN. 



Achradocrinus patulus Slocom. 

 Acidaspis vanhorni Wellrr. 

 Actinoccras abnorme (Hall). 

 Ambonychia undulata (Whitfield). 

 Amphcristocrinus dubius Weller. 

 Amphiccclia leidyi Hall. 

 Amphiccelia negelcta (McChesney). 

 Amplexus fcnestratus Whitfield. 

 Amplexus shumardi (Edwards and Halme). 

 Ancislroceras? dyeri Hyatt. 

 Anistrophia interplicata Hall. 

 A rchseocrinus depressus Weller. 

 Arctinurus chicagoensis Weller. 

 Arctinurus occidentalis (Hall). 

 Atrypa nodostriata Hall. 

 Atrypa rcticularis Linnaeus. 

 Botryocrinus polyxo Hall. 

 Bumastus armatus (Hall). 

 Bumastus chicagoensis (Weller). 

 Bumastus cuniculus (Hall). 

 Bumastus graftonensis Meek and Worthen. 

 Bumastus harrisi (Weller). 

 Bumastus imperator (Hall). 

 Bumastus insignis (Hall). 





