1402 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



trentonensis continued . 

 Lingula, Lyonsia, Metoptoma, Modio- 

 lopsis, Monotrypella, Monticulipora 

 (Heterotrypa), Odontopleura, Onco- 

 ceras, Orthoceras, Orthoceratites, Palse- 

 oglossa, Pholidops, Phylloporina, Platy- 

 metopus, Platynotus, Plectorthis plica- 

 tella, Primicorallina, Prolobella, Proto- 

 warthia cancellata, Peeudosphserexo- 

 chus, Pterinea, Retepora, Rhinidictya, 

 Romingeria, Sabellarites, Sinuites can- 

 cellata, Spirifer, Strophomena, Subre- 

 tepora, Tryblidium, Zittelella. 



trescotti Pterinea (Tolmaia). 



triangularis Conradella, Cypricardites, 

 Lumbriconereites, Phragmolites. 



triangulatus (a) Asaphus, Conularia, 

 Eusarcus, Grammysia, Orthonota. 



triangulus Ecculiomphalus, Eccyliom- 

 phalus, Eccyliopterus. 



triarthrus Paradoxides. 



tribulis Atrypa, Dicellocephalus, Dikel- 

 ocephalus. 



tricarinatus (a) Hormotoma, Lophospira, 

 Murchisonia, Pleurotrochus, Trocho- 

 nema, Straparollus. 



tricenaria Orthis, Platystrophia. 



trichomanes Strophograptus. 



tricornis Cryptograptus, Cryptograptua 

 (Idiograptus), Diplograptus, 



tridactylus Ichnophycus. 



tridens Da wsonia . 



tridentatus Climacograptus bicornis. 



tridigitatum Dactylophycus. 



trifidus Asaphoidichnus, Diplograptus, 

 Diplograptus foliaceus, Leptograptus 

 flaccidus spinifer. 



trifurcatum Anisophyllum. 



trigonostoma Diaphorostoma, Platyosto- 

 ma, Platyostoma niagarensis, Trema- 

 notus, Bucania, Xenophora. 



trilineata Eunema, Pleurotomaria. 



triliratus Euomphalus. 



triloba Ceramoporella, Illsenoides. 



trilobatus (a, urn) Bellerophon, Buca- 

 nella, Bucania, Bucaniella, Conchidi- 

 um, Leptaena, Planorbis, Streptelasma 

 latusculum, Streptelasma rusticum, 

 Strophomena. 



trilobioides Cancer. 



trinucleus Orthis. 



tripectinatus Callocystites. 



tripla Bucania. 



triplesiana Stricklandinia. 



triplicata Beyrichia lata, Halliella. 



triplicatella Orthis, Orthis plicatella, 

 Plectorthis, Plectorthis fissicosta, Plec- 

 torthis plicatella. 



triquetra Avicula. 



trisectus Agnostus. 



triserialis Pachydictya. 



trisinuatus (a) Athyris, Meristina, Pen- 

 tamerus. 



trisulcatus (a) Beyrichia, Calymene, 

 Klcedenella, Phacops. 



triton Piloceras. 



tritonia Helicotoma, Orthis. 



trochiscus Euomphalus, Polygyrata, 

 Raphistoma. 



trochonemoides Lophospira. 



trombetana Pholidops. 



trombetensis Tentaculites. 



troosti Bellerophon, Chasmops, Colum- 

 naria, Dalmanites, Favosites, Pterygo- 

 metopus, Symbathocrinus. 



tropidophora Murchisonia, Pleurotoma- 

 ria, Pleurotomaria (Scaliteb). 



truncatula Cuneamjra. 



truncatus (a) Bolbocephalus, Discinia, 

 Eurymya, Ischyrodonta, Modiolodon, 

 Modiolopsis, Orbicula, Orbiculoidea, 

 Whitella. 



trusitum Orthoceras, Protokionoceras. 



tuber Bellerophon. 



tiiberculatus (a) Arges, Bathyurus, Bey- 

 richia, Brachiospongia, Carabocrinus, 

 Chaetetes, Climacograptus bicornis, Co- 

 rydocephalus, Eucalyptocrinus, Homo- 

 trypa, Hystricurus, Lichenocrinus, 

 Monticulipora, Monticulipora (Mono- 

 trypa), Spatiopora. 



tuberculosus (a) Encrinurus, Fistuli- 

 pora, Rhinopora, Trematopora. 



tuberoides Favosites. 



tuberosus (a) Pattersonia, Scolithus, 

 Strobilospongia. 



tubularis (e) Cyathodictya, Cyathophy- 

 cus, Palseophycus, Stromatopora. 



tubulistriata Atrypa . 



tubulosa (um) Ceramoporella, Diameso- 

 pora, Phytopsis, Rhinopora, Tremato- 

 pora. 



tumidif ron s I llsenus . 



tumidosus Agnostus. 



tumidula Athyris, Leperditia, Priinitia. 



