1468 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



TRENTON (EYSEDORPH CONGLOMERATE) OF EASTERN 

 NEW YORK. 



Ampyx (Lonchodomas) tiastatus Ruedemann. 

 Aparchites minutissimus robustus Ruedemann. 

 Bolboporites americanus Billings. 

 Bollia cornucopix Ruedemann. 

 Bythocypris cylindrica (Hall). 

 Calymene senaria Conrad. 

 Carinaropsis carinata Hall. 

 Ceraurus pleurexanthemus (Green). 

 Christiania trentonensis Ruederaann. 

 Clathrospira subconica Hall. 

 Climacograptus scharenbergi Lapworth. 

 Conularia trentonensis Hall. 

 Corynotrypa inflata (Hall) 

 Cyphaspis matutina Ruedemann 

 Cyrtospira attenuata Ruedemann. 

 Dalmanella testudinaria var. (Dalman). 

 Dinorthis pectinella (Emmons). 

 Diplograptus foliaceus (Murchison). 

 Eccyliopterus spiralis Ruedemann 

 Eurychilina bulbifera Ruedemann 

 Eurychilina dianthus Ruedemann. 

 Eurychilina obliqua Ruedemann. 

 Eurychilina reticulata Ulrich. 

 Eurychilinaf solida Ruedemann. 

 Eurychilina subradiata renssclxrica Ruedemann. 

 Gerasaphes ulrichana (Clarke). 

 Goldius lunatus (Billings). 

 Hallopora multitabulata (Ulrich). 

 Holopea paludiniformia Hall. 

 Hyolithes rhine Ruedemann. 



Illsenus americanus Billings. 

 Isochilina armata pygmsea Ruedemann. 

 Isotdus maximum Locke. 

 Leperditiafabulites Conrad. 

 Leperditia resplendens Ruedemann. 

 Leptxna rhomboidalis var. (Wilckens). 

 Liospira americana (Billings). 

 Liospira subtilistriata (Hall). 

 Lophospira bicincta (Hall). 

 Lophospira perangulata (Hall). 

 MacronoteUafragaria Ruedemann. 

 Macronotella ulrichi Ruedemann. 

 Orthis tricenaria Conrad. 

 Parastrophia hemiplicata Hall. 

 Pholidops trentonensis Hall. 

 Phragmolites compressus (Conrad). 

 Pianodema subxquata perveta (Conrad). 

 Platystrophia biforata var. Schlotheim. 

 Plectambonites pisum Ruedemann. 

 Plectambonites sericeus var. (Sowerby). 

 Prasopora simulatrix orientalis Ulrich. 

 Primitia jonesi (Ruedemann). 

 Prolobella aviculoides (Hall). 

 Pterygometopus achates (Billings). 

 Pterygometopus callicephalus Hall. 

 Pterygometopus eboraceus Clarke. 

 Rafinesquina alternataf (Emmons). 

 Rafinesquina deltoidea (Conrad). 

 Remopleurides linguatus Ruedemann. 

 Remopleurides tumidus Ruedemann. 

 Schmidtella crassimarginata ventrilabiata Ruede- 

 mann. 



Sinuites cancellata (Hail). 

 Siphonotretaf minnesotensis Hall and Clarke. 

 Sphxrocoryphe major Ruedemann. 



Spyroccras bilineatum (Hall). 

 Spyroceras subannulatum (Hall). 

 Streptclasma corniculum Hall. 

 Thalcops ovata Conrad. 

 Tretaspis diadcmata Ruedemann. 

 Tretaspis re ticulatus Ruedemann. 

 Triplecia nucleus Hall. 

 Trochonema umbilicatum (Hall). 

 Whitella ventricosa (Hall). 

 Zitteloceras hallianum (D'Orbigny). 

 Zygospira exigua (Hall). 

 Zygospira recurvirostris Hall. 



TRENTON (SNAKE HILL) OF EASTERN NEW YORK. 



Archinacella orbiculata (Hall). 



Azygograptus? campanulata Nicholson. 



Calymene senaria Conrad. 



Carabocrinus radiatus Billings. 



Chaunograptus rcctilinea Ruedemann. 



Clathrospira subconica Hall. 



Clidophorus foerstei Ruedemann. 



Clidophorus ventricosus Ruedemann. 



Climacograptus caudatus Lapworth. 



Climacograptus ( Mcsograptus) putillus Hall. 



Climacograptus sharenbergi Lapworth. 



Climacograptus spiniferus Ruedemann. 



Clitambonitcs diversus (Shaler). 



Conularia trentonensis multicosta Ruederaann. 



Corynoidcs calicularis Nicholson. 



Corynoides curtus Lapworth. 



Corynoides curtus comma Ruedemann. 



Corynoides gracilis Hopkinson. 



Cryptolithus tessellatus (Greene). 



Cryptograptus tricornis insectiformis Ruedemann. 



Ctenobolbina ciliata (Emmons). 



Ctenobolbina ciliata cornuta Ruedemann. 



Ctenobolhira subrotunda Ruedemann. 



Ctenodonta declivis Ruedemann. 



Ctenodonta levata (Hall). 



Ctenodonta prosseri Ruedemann. 



Ctenodonta radiata Ruedemann. 



Ctenodonta recta Ruedemann. 



Ctenodonta subcuneata Ruedemann. 



Cuneamya acutifron* Ulrich. 



Cyclonema cushingi Ruedemann. 



Cyclonema montrcalcnse Billings. 



Cyclospira bisukata (Emmons). 



Dalmanella testudinaria (Dalman.) 



Dicranograptus nicholsoni Hopkinson. 



Dinorthis (Plxsiomys) retrorsa (Salter). 



Diplograptus (Glyptograptus) amplexkaulis Hall. 



Diplograptus amplexkaulis pcrtenuis Ruedemann. 



Discophyllum peltatum Hall. 



Edrioaster saratogcnsis Ruedemann. 



Eoharpes ottawaensis (Billings). 



Eopolychxtus albaniensis Ruedemann. 



Glossograptus (Orthograptus) quadrimucronatus mut. 



pertenuis Hall. 

 Heterocrinus? gracilis Hall. 

 Isotelus gigas DeKay. 



Lasiograptus ( Thysanograptus') eucharis (Hall). 

 Lepidocoleus jamesi (Hall and Whitfleld). 

 Leptobolus insignis Hall. 

 Lingula curta Conrad. 

 Lophospira uniangulata abbreviata (Hall). 

 Lyrodesma schucherti Ruedemann. 

 Odontopleura trentonensis Hall. 



