1466" BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Homotrypa subramosa insignis (Ulrich). 



HomotrypeUa hospitalis crassa (Ulrich). 



HomotrypcUa mundula Ulrich. 



HomotrypeUa? ovata Ulrich. 



Hormotoma bellicincta (Hall). 



Hormotoma gracilis (Hall). 



Hormotoma(?') major (Hall). 



Hormotoma salteri (Ulrich). 



Hormotoma trentonensis Ulrich and Scofield. 



Illxnus americanus (Billings). 



Ischadites iowemis (Owen). 



Isotdus gigasf Dekay. 



IsotdU'S maximusf Locke. 



Jonesclla obscura Ulrich. 



Eokenospira costalis Ulrich and Scofleld. 



Lichenaria minor Ulrich. 



Licrophycus ottawaense Billings. 



Lingula? canadensis Billings. 



Lingula (Palseoglossa) deflect a (Winchell and Schu- 



chert). 



Lingula (Palxoglossa) hurlbuti (N. H. Winchell). 

 Lingula (Pseudolingula) iowensis (Owen). 

 Lingula riciniformis Hall. 

 Lingula riciniformis galenensis Winchell and Schu- 



chert. 



Lingulasma galenense Winchell and Schuchert. 

 Liospira americana Billings. 

 Liospira angustata Ulrich. 

 Liospira progne Billings. 

 Lophospira bidncta Hall. 

 Lophospira elevata Ulrich and Scofleld. 

 Lophospira fillmorensis Ulrich and Scofield. 

 Lophospira medialis Ulrich and Scofield. 

 Lophospira perforata Ulrich and Scofield. 

 Lyrodesma cannonenseUlrich. 

 Madurites crassus macro, (Ulrich and Scofield). 

 Mxlonoceras neleus (Hall). 

 Mesotrypa discoidea Ulrich. 

 Mesotrypa quebecensis (Ami). 

 Mesotrypa? rotunda Ulrich. 

 Mitoclema? mundulum Ulrich. 

 Modiolodon patulus Ulrich. 

 Modiolopsis mytiloides Hall. 

 Modiolopsis nana Ulrich. 

 Modiolopsis oweni Ulrich. 

 Monotrypa intabulata Ulrich. 

 Monticulipora arbor ea Ulrich. 

 Monticulipora? cannonensis Ulrich. 

 Nematopora conferta Ukich. 

 Nematopora consueta Basslei . 

 Nematopora granosa Ulrich. 

 Nematopora ovalis Ulrich. 

 Nilcus vigilans (Meek and Worthen). 

 Odontopleura parvula (Walcolt). 

 O ncoceras douglassi Clarke. 

 Oncoceras exiguum (Billings). 

 Oncoceras minnesotense Clarke. 

 Ophiletina sublaxa sequens Uliich and Scofield. 

 Orthoceras beltrami Clarke. 

 Orthoceras junceum Hall. 

 Orthodesma schucherti Ulrich. 

 Oxydiscus subacutus Ulrich. 

 Pachydictya acuta (Hall). 

 Pachydictya elegans Ulrich. 

 Pachydictya magnipora Ulrich. 

 Pachydiclya pumila Ulrich. 

 Pachydictya pumila sublata Ulrich. 



Parastrfiplda hemiplicata Hall. 



Parastrophia hemiplicata rotunda Winchell and 

 Schuchert. 



Parastrophia scofieldi (Winchell and Schuchert). 



Pasceolus globosus Billings. 



Petrocrania ulnchi (Hall and Clarke). 



Phsmopora incipiens Ulrich. 



Pholidops trentonensis minor Winchell and Schu- 

 chert. 



Phragmolites dyeri cellulosus (Ulrich and Scofield). 



Plectambonites gibbosus Winchell and Schuchert. 



Plectambonites minncsotensis (Sardeson). 



Plectambonites sericeus Sowerby. 



Plectorthis plicatella trentonensis Foerste. 



Plcthocardia suberecta Ulrich. 



Pleurocystitcs squamosus Billings. 



Podolithus anomalocrinus Sardeson. 



Podolithus dendrocrinus Sardeson. 



Podolithus eucheirocrinus Sardeson. 



Poterioceras apertum Whiteaves. 



Prasopora affinis Foord. 



Prasopora grandis (Ulrich). 



Prasopora insularis Ulrich. 



Prasopora insularis fillmorensis Ulrich. 



Prasopora oculata Foord. 



Prasopora selwyni (Nicholson). 



Prasopora simulatrix Ulrich. 



Primitia micula Ulrich. 



Primitia uphami Ulrich. 



Prolobella striatula Ulrich. 



Protarxa vetusta (Hall). 



Psiloconcha minnesotensis Ulrich. 



Pterygometopus achates (Billings). 



Pterygometopus callicephalus (Hall). 



Pterygometopus schmidti Clarke. 



Rafinesquina alternata (Emmons). 



Rafinesquina deltoidea (Conrad). 



Raphistomina rugata Ulrich and Scofield. 



Receptaculites oweni Hall. 



Rhinidictya minima Ulrich. 



Rhinidictya minima modesta Ulrich. 



Rhinidictya mutabilis (Ulrich). 



Rhynchotrema increbescens (Hall). 



Rhynchotrema increbescens laticostalum (Winchell 

 and Schuchert). 



Rhytimya sinuata Ulrich. 



Saffordia modesta (Ulrich). . 



Salpingostoma sculptile Ulrich and Scofield. 



Scenella affinis Ulrich and Scofield. 



Scenella affinis obsoleta Ulrich and Scofield. 



Scenella radialis Ulrich and Scofield. 



Schizotreta pelopea (Billings). 



Schmidtella affinis Ulrich. 



Schmidtella incompta subxqualis Ulrich. 



Siiwites canccllatus (Hall). 



Sinuitcs cancellatus trentonensis (Ulrich and Sco- 

 field). 



Sphenolium striatum Ulrich. 



Stomatopora arachnoidea (Hall). 



Streptelasma corniculum Hall. 



Strophomena billmgsi Winchell and Schuchert. 



Strophomena emaciata Winchell and Schuchert. 



Strophomena scofieldi Winchell and Schuchert. 



Strophomena trentonensis Winchell and Schuchert. 



Strophomena trilobata (Owan). 



Strophostylus tcxtilis Ulrich and Scofield. 



Subulites pergracilis Ulrich and Scofield. 





