1448 BULLETIN 92. UNITED STATES NATIONAL MUSEUM. 



Piloceras gracile BiUings. (H.) 

 Piloceras triton Billings. (G.,H.) 

 Piloceras wortheni Billings. (H.) 

 Pleurotomaria agarista Billings. (H.) 

 Plcurotomaria ( Trochonemaf) calphurnia (Billings). 



(G.) 



Plcurotomaria harpya Billings. (G.) 

 Pleurotomaria hyale Billings. (F.) 

 Pleurotomaria normani Billings. (G.) 

 Pliomerops insularis (Billings). (G.) 

 Ptilograptus plumosus (Hall). (P.) 

 Pycnoceras apertum Hyatt. 

 Pycnoceras calcifcriforme Hyatt. 

 Raphistoma Jiortcnsia (Billings). (H.) 

 Shumardia glacialis Billings. (P.) 

 Straparollina pclagica Billings. (P.) 

 Syntrophia calcifcra (Billings). (P.) 

 Tarphyccras aucoini Hyatt. 

 Tarphyccras calcifcrus (Billings). (F., G.)^ 

 Tarphyceras extensum Hyatt. 

 Tarphyceras prematurum Hyatt. 

 Tctragraptus denticulatus (Hall). (P.) 

 Tctragraptusfruticosus (Hall). (P.) 

 Tetragraptus Jieadi (Hall). (P.) 

 Tetragraptus serra (Hall). (P.) 

 Trachyum cyathiforme Billings. (G.) 

 Trachyum rugosum Billings. (G.) 

 Trochocerasf incipiens Barrande. 

 Turritoma acrea (Billings). (G.) 



ORDOVICIAN FAUNAS. 



ST. PETER SANDSTONE OF MISSISSIPPI VALLEY. 



Crania(f) reversa Sardeson. 

 Ctenodonta absimilis (Sardeson). 

 Ctenodonta novicia (Sardeson). 

 Cyrtodonta descriptus (Sardeson). 

 Cyrtodonta dignus (Sardeson). 

 Cyrtodonta finitimus (Sardeson). 

 Leperditia sublxvis ( Shumard) . (Joachim Is . ) 

 Modiolopsis affinis Sardeson. 

 Modiolopsis contigua Sardeson. 

 Modiolopsis fountainensis Sardeson. 

 Modiolopsis gregalis Sardeson. 

 Modiolopsis litoralis Sardeson. 

 Modiolopsis postica Sardeson. 

 Ophiletafausta Sardeson. 

 Orthoceras minnesotense Sardeson. 

 Platyceras vetulum Sardeson. 

 Pleurotomaria aiens Sardeson. 

 Psiloconcha senecta (Sardeson). 

 Rauffella? fucoida Sardeson. 

 Scolithus minnesotensis James. 

 Vanuxemiafragosa (Sardeson). 



CHAZTAN OF CHAMPLATN AND OTTAWA VALLEYS. 



(Day Point=D.; Crown Point=C.; Valcour=V.; 

 Aylmer=A.) 



Ambonychiaf curvata Raymond. (D.,C.) 

 Amphilichas minganensis (BiUings). (D., V.,C.) 

 Ampyx (Lonchodomas) halli (Billings). (C.) 

 Archzeocrinusf delicatulus Hudson. (V.) 

 Archinacella deformata (Hall). (D., V.) 

 A rchinacella propria Raymond. (C., D.) 

 Barrandeoceras natator (Billings). (V.) 

 Basilicus marginalia (Hall). (D.,C.) 

 Bathyurellus brevispinus Raymond. (D.) 

 Bathyurellus minor Raymond. (C.) 



Blastoidocrinus carcharixdens Billings. (V.) 

 Bucania sulcatina (Emmons). (D.,V.) 

 Bumastus erastusi (Raymond). (C.,V.) 

 Bumastus globosus (Billings). <D.,V.) 

 Bumastus limbatus Raymond. (V.) 

 Buthotrcphis antiquata Hall. 

 Camarclla longirostris Billings. (D.,V.) 

 Camarclla variant BUlings. (C.,V.) 

 Camarotcccliia major Raymond. (V.) 

 Camarotoechia orientals (Billings). (A.) 

 Camarotoechia plena Hall. (A. , V.) 

 Camarotccchia pristina Raymond. (C., V.) 

 Camcroceras curvatum Ruedemann. (V.) 

 Cameroceras t cnuiseptum (Hall). (D.,V.) 

 Camcroceras vclox (Billings). (A.) 

 Canadocystis barrandi (Billings). (A.) 

 Canadocystis cmmonsi (Hudson). (C., V.) 

 Carabocrinus geomctricus Hudson. (V.) 

 Ceratoccphala narrawayi Raymond. (C.) 

 Ccraurus granulosus Raymond and Barton. (C.) 

 Ccraurus hudsoni Raymond. (C.) 

 Chasmatopora gracilis (Hall). 

 Chasmatopora inccpta (Hall). 

 Cheirocrinusforbesi (Billings). (A.) 

 Cleiocrinus pcrforatus (Hudson). (V.) 

 Clidophorus obscurus Raymond. (C.) 

 Clionychia marginalia Raymond. (D.) 

 Clionychia mytiloidcs (Hall). 

 Clitambonitcs multicostus (Hudson). (V.) 

 Clitambonites porcia (Billings). (A.) 

 Clisospira basslcri Raymond. (D?.) 

 Conocardium bccchcri Raymond. (V.) 

 Conularia triangulata Raymond. (V.) 

 Cryptozoon pcrkinsi Seely. 

 Ctenodonta bidorsata Raymond. (C.) 

 Ctenodonta dubiaformis Raymond. (C.) 

 Ctenodonta parvidcns Raymond. (A.) 

 Cybeloides primus (Raymond). (D., C.) 

 Cyclocerasf rectiannulatum (Hall). 

 Cyrtactinoceras.boycii (Whitficld). (C., V.) 

 Cyrtactinoceras champlainense Ruedemann. (V.) 

 Cyrtoceras mccoyi Billings. 

 Cyrtodonta janesvillensis Ulrich. (V.) 

 Cyrtodonta, scala Raymond. (C.) 

 Cyrtodonta solitaria Raymond. (C.) 

 Cyrtospira raymondi (Hudson). (C., V.) 

 Deltoceras vaningeni Ruedemann. (C.) 

 Deocrinus asperatus (Billings). (A.) 

 Diaphorostoma auriforme (Hall). 

 Dinorthis (Plxsiomys) platys (BUlings). (C.) 

 Dinorthis ( Valcourea) strophomenoides (Raymond). 



(C.) 



Eccyliomphalus fredericus Raymond. (C.) 

 Eccyliomphalus kalmi (Raymond). (C.) 

 Eccyliomphalus proclivis (Raymond). (C.) 

 Eccyliopterus vagrans ( Raymond ) . ( C. ) 

 Endoceras(f) hudsoni Ruedemann. (V.) 

 Endoceras magister Ruedemann. (V.) 

 Endodesma transceps (Raymond). (C.) 

 Eoharpes antiguatus (Billings). (D., C.) 

 Eoharpes oltawaensis (Billings). (D.) 

 Eotomaria obsoleta Raymond. (D., C.) 

 EurycMlina latimarginata (Raymond). (D. C. V.) 

 Fletcheria incerta (Billings). 

 Geisonoceras shumardi (Billings). (D. C.) 

 Girvanella atrata (Seely). (C.) 

 Girvanella brainerdi (Seely). (C.) 

 Girvanella ocellata (Seely). (C.) 





