1504 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



s novascotica Ami. 

 italis Ami. 



Hula Billings. 

 onsimilis Billings. 

 Goniophora mediocris Billings. 

 Goniophora transicns Billings. (S.) 



Billings. (M., S.) 

 Grammysia remota Billings. 



y ,'" rustica Billings. (S.) 

 Holopea reversa Hall. 

 Homalonotus dawsoni Hall. (M., S.) 

 Lepcrditia sinuata Hall. 

 Lcptxna rliomboidalis (Wilckens). (R., S.) 

 Leptodesma rhombo-idea (Hall). (R.) 

 Lcptodomus (Sanguinolitcs) aratu-s Hall. 

 Megambonia cancellata Hall. 

 Megambonia striata Hall. 

 Mesopalseaster parviusculus (Billings). 

 Modiolopsis exilis Billings. 

 Modiolopsis rhomboidea (Conrad). 

 Modiolopsis ruda Billings. 

 Modiolopsis subnasuta Hall. 

 Monograpius clintonensis (Hall). (R.) 

 Monograpius priodon chapmanensis Ruedemann. 



(R.) 



Murchisonia aciculata Hall. 

 Murchisonia arisaigensis Hall. 



/;<« (Ortlwnota) carinatus Dawson. 

 Ofokuloidea subplana (Hall). 

 Orilwceras clegantulum Dawson. 

 Orihoceras ezornatum Dawson. 

 Ortlioccras pictoense Dawson. 



■ i as punctostriatum Hall. 

 ' onota angulifera McCoy. (S.) 



certa Billings. 

 Orihonota simulans Billings. 

 Orihonota speciosa Billings. 

 Orihonota venusta Billings. 

 Pliacopidella downingise (Murchison). (R.) 

 Pholidops oralis Hall. (McA., S.) 

 Pterinea emacerata (Hall). (A., M.) 

 Pteririea honeymani (Hall). (A.) 

 Pteronitella curia Billings. (S.) 

 Pteronitella oblonga Billings. 

 Pteronitella venusta Billings. (S.) 

 Betiolites g: iniizianus venosus (Hall). (R.) 

 Rhynchospira(t) acadiss (Hall). 

 Rhynchospira(f) sinuata Hall. 



; ( ta tenuilamellaia (Hall). (R.) 

 Schuchertella subplana (Hall). (S.) 

 Serpulites longissimus Murchison. (M.) 

 Spiri/cr (Delthyris) crispus (Hisinger). (R.) 



') rugicosta (Hall). (S.) 

 Spirifc r (Delthyris) subsulcatus (Hall). (M., S.) 

 Strict igsiana Dawson. 



Siropheodonta{?) gilpeni (Dawson). 

 Tentaculites canadensis Ami. 



NIAGARAN OF ARCTIC AMERICA. 



Acervularia a I er). 



is perarmatu White 



hi (Stokes). 



inense Whiteaves. 



). (Lake ] 

 earning.) 



liclyon canadense Barks. 

 Parks. 



dictyon lowi Barks. 

 Actinodictyon neptuni Barks. 

 Actinostroma franklinensc Parks. 

 Actinostroma tenuifilatum Parks. 

 Aciinosiroma tenuifilatum cylindricum Parks. 

 Actinostroma tenuifilatum inflectum Parks. 

 Alveolites arclica Woodward. 



dosus Miller. (Saskatchewan River). 

 Ambonychia septentrionalis Whiteaves. 

 A mbonychia undulala (Whitfield). 

 A mplexus fieldeni Etheridge. 

 A mpU xus phragmoceras (Salter). 



^elates billingsi (Jones). 

 Aphylhstylus gracilis Whiteaves. 

 Atrypa mansonii (Salter). 

 BeUerophon nautarum Salter. 



Ma clafhrata Jones. 

 Beyrichia plagosa Jones. 

 Borcaster lowi Lambe. 



Calapcccia borealis Whitfield. 



CamarotcecMa(?) coalcsccns Whiteaves. 



Camaro'achia ekwanensis Whiteaves. 



Ccunopora hudsoniea Dawson. 



Chonetcs striatcllus (Dalman). 



Clathrodictyon cystosum Parks. 



Clathrodictyon cystosum cylindricum Parks. 



Clathrodictyon cystosum lineatum Parks. 



Clathrodictyon drummondense Parks. 



Clathrodictyon striatellum (D'Orbigny). 



Clathrodictyon vesiculosum minutum (Rominger). 



Columnaria sutlterlandi Salter. 



Conchidium arcticum Iloltedahl. 



Conchidium bilocularc Linnaeus. 



Conchidium decussatum (Whiteaves). 



Cyaihophyllum articulatum (Wahlenberg). 



Cyaihophyllum picklhorni (Salter). 



Cyrtoceras cordatum Parks. 



CyrtocerasfJ) cuneatum Whiteaves. 



Diapliorosioma perforatum Whiteaves. 



Encri.au r us lasvis (Angelin). 



Endoecms? ommaneyi Salter. 



Fai '„ i ','.. /, I lini Suitor. 



Favisiella reticulata Salter. 



F< !, i '.( lla sul art ti a Whiteaves. 



Glassia variabilis Whiteaves. 



■ aquilonaris (Whiteaves). 



Goldius ekwanensis (Whiteaves). 



GoldiusflabeUifer (Goldfuss). 



Gypidula coppingcri (Etheridge). 



Gyroncma brevispira Whiteaves. 



Gyroncma dowlingii "Whiteaves. 



Gyroncma speciosum Whiteaves. 



Halysites agglomeratiformis Whitfield. 



Halysites catcnularia fieldeni Etheridge. 



Halysites catcnularia harti Etheridge. 



Halysites parryi (Konig). 



Helicotoma naresii Etheridge. 



Heliolites megastoma (McCoy). 

 ,'i lit sp< ;< legans Whitfield. 



Ilioniaf parvula Whiteaves. 



'Una grandis latimarginata Jones (Saskatche- 

 wan River). 



Lt; rditi ri ica (Jones). 



1 . ':• cseca Jones (Saskatchewan River). 



' i litiagib] 



• i Schmidt. 



reri cgena Jones (Saskatchewan 

 Liver). 



