1498 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Mxlonoccras arcticamcratum (Hall). (G.) 

 Marsipocrinus prxmaturus (Hall and Whitfield). 



(G.) 

 Megalomus canadensis Hall. (G.) 

 Mcgalomus comprcssus Nicholson and Hinde. (G.) 

 Melocrinus sculptus (Hall). (L.) 

 Modiomor pha acuminata Parks. (G.) 

 Monomorclla durhamensis Whiteaves. (G.) 

 Monomorclla cgani Hall and Clarke. (G.) 

 Monomorclla grcenci Hall and Clarke. (G.) 

 Monomorclla newberryi Hall and Whitfield. (G.) 

 Monomorclla noveboracum Clarke and Ruedemann. 



(G.) 

 Monomorclla orbicularis Billings. (G.) 

 Monomorclla ortoni Hall and Clarke. (G.) 

 Monomorclla ovata Whiteaves. (G.) 

 Monomorclla ovata lata Whiteaves. (G.) 

 Monomorclla prisca Billings. (G.) 

 Murchisonia?? billingsana Miller. (G.) 

 Mytilarca acutirostra (Hall). (G.) 

 Oncoceras pettiti Billings. (L.) 

 Oncoceras tcuccr Billings. (L.) 

 Orthoccras brontes Billings. (L.) 

 Orthoccras carltoncnsis Whitfield. (G.) 

 Orthoccras obcron Billings. (L.) 

 Orthoccras py lades Billings. (L.) 

 Orthoccras rectum Worthen. (G.) 

 Orthoccras remits Billings. (L.) 

 Orthoccras sclwyni Billings. (G.) 

 Orthoccras sublxve D'Orbigny. (G.) 

 Orthoccras varro Billings. (L.) 

 Pentamcrus oblongus bisinuatus (McChesney). (G.) 

 Pcriechocrinus speciosus (Hall). (L.) 

 Phanerotrcma occidens (Hall). (G.) 

 Phragmoccras hector Billings. (G.) 

 Phragmoccras ncstor canadense Whiteaves. (G.) 

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

 Phragmoccras whitneyi Parks. (G.) - 

 Pleumtomaria cyclostoma Whiteaves. (G.) 

 Plcurotomaria townsendii Whiteaves. (G.) 

 Poleumita crcnulata (Whiteaves). (G.) 

 Poleumita durhamensis (Whiteaves). (G.) 

 Poleumita hudsonica Parks. (G.) 

 Poleumita macrolineata (Whitfield). (G.) 

 Poleumita parvula (Whiteaves). (G.) 

 Poleumita scamnata Clarke and Ruedemann. (G.) 

 Polcumila? sulcata (Hall). (G.) 

 Poleumita viola (Billings). (G.) 

 Polrrioceras sauridens Clarke and R uedemann. ( G . ) 

 Prolucina galtcnsis (Whiteaves). (G.) 

 Protokionoccras crcbcsccns Hall. (G.) 

 Protokionoccras mcdullare (Hall). (G.) 

 Protokionoccras trusitum (Clarke and Ruedemann). 



(G.) 

 Protophragmoccras patronus Clarke and Ruedemann. 



(G.) 

 Ptcrinca bradti Grabau. (G.) 

 Pterinca undata (Hall). (G.) 

 Pycnomphalus solarioidcs (Hall). (G.) 

 Pycnostylus elcgans Whiteaves. (G.) 

 Pycnostylus guclphensis Whiteaves. (G .) 

 Rhinobolus galtcnsis (Billings). (G.) 

 Rhipidomellahybrida (Sow erhy). (L., G.) 

 Rhynchotrcta cuncata amcricana nail. (L.) 

 Roscnclla glcnclgensis Parks. (G.) 

 Sccnella conica Whiteaves. (G.) 

 Schizotrcta tcnuilamcllata (Hall). (L.) 



Scptamcroceras septore (Hall). (G.) 

 Spirifer (Dclthyris) crispus (Hisinger). (G.) 

 Spirifcr (Eospirifcr) radiatus (Sowerhy). (G.) 

 Stictopora graminifolia Ringueberg. (Gas.) 

 Straparollina daphne (Billings). (G.) 

 Straparollus Uppolyta Billings. (G.) 

 Straparollus niagarensis Hall and Whitfield. (G.) 

 Strcptoccras licros Billings. (L.) 

 Strcptoceras janus Billings. (L.) 

 Streptomytilus eduliformis Clarke and Ruedemann. 



(G.) 

 Stricklandinia multilirata Whitfield. (G.) 

 Stromatopora antiqua (Nicholson and Murie) 



(L.G.) 

 Stromatopora galtensis Dawson. (G.) 

 Stromatoporclla clora Parks. (G.) 

 Stromatoporclla clora minuta Parks. (G.) 

 Subulitcs compaclus Whiteaves. (G.) 

 Subulites tcrebriformis Hall and Whitefield. (G.) 

 Tremanotus alpheus (Hall). (G.) 

 Trcmanotus angustatus Hall. (G.) 

 Tremanotus ? trigonostoma Halland Whitfield. (G.) 

 Trimerclla acuminata Billings. (G.) 

 Trimerella billingsi Dall. (G.) 

 Trimerclla dalli Davidson and King. (G.) 

 Trimerclla grandis Billings. (G.) 

 Trimerclla ohioensis Meek. (G.) 

 Trochoccras costalum (Hall). (G.) 

 Trochoccras dcsplainense McChesney. ( G . ) 

 Troclwnema fatuum (Hall). (G.) 

 Trochoncma pauper ohioense Hall and Whitfield. 



(G.) 

 Troostocrinus subcylindricus (Hall and Whitfield). 



(G.) 

 Turritoma boylei (Nicholson). (G.) 

 Turritoma constricta (Whiteaves). (G.) 

 Tyrellia scvernensis Parks. (G.) 

 Whitficlddla hyale (Billings). (G.) 

 Whilftcldclla nitida (Hall). (G. L.) 

 Zaphrentis racinensis Whitfield. (G.) 

 Zaphrcntis turbinata (Hall). (L.) 



NIAGARAN (RACINE) OF ILLINOIS AND WISCONSIN. 



Achradocrinus patulus Slocom. 

 Acidaspis vanhorni Wcllcr. 

 Actinoccras abnormc (nail). 

 Ambonychia undulata (Whitfield). 

 Ampherislocrinus dubius Weller. 

 Amphiccelia leidyi Hall. 

 Amphkalia ncgclcta (McChesney). 

 A mplcxus fencstratus Whitfield . 

 Amplcius shumardi (Edwards and Halme). 

 Ancistroccras? dycri Hyatt. 

 Anistrophia interplicata Hall. 

 Archxocrinus deprcssus Weller. 

 Arctinurus chicagoensis Weller. 

 Arctinurus occidentalis (Hall). 

 Atrypa nodostriata Hall. 

 Atrypa reticularis 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). 



