1454 BULLETIN" 92, UNITED STATES NATIONAL MUSEUM. 



Ctenodonta contracta Salter. (Lo.) 

 Ctenodonta costata Branson. (A.) 



Ctenodonta cuneiformis Ulrich. (D.) 



Ctenodonta gibberuld Salter. (Le., D., L., P.) 



Ctenodonta hamburgensis (Walcott). (D.) 



Ctenodonta inflata (Hall). (P.) 



Ctenodonta jerseyensk Weller. (New Jersey.) 



Ctenodonta logani Salter. (Le., P.) 



Ctenodonta longa (Ulrich). (D.) 



Ctenodonta medialis Ulrich. (D., A.) 



Ctenodonta nasuta (Hall). (P. D., A., Le., L.) 



Oknodonta nasvta robusta Ulrich. (P.) 



Ctenodonta nitida (Ulrich). (D.) 



Ctenodonta ovata (Hall). (P.) 



Ctenodonta oviformis Ulrich. (D., A.) 



Ctenodonta planodorsata (Ulrich). (D.) 



Ctenodonta scofieldi Ulrich. (D.) 



Ctenodonta socialis Ulrich. (D.) 



Cybcloidcs ella (Raymond and Narraway). 



Cyeloceras lesucuri (Clarke). (P.) 



Cycloccras nkolleti (Clarke). (P.) 



Cyeloceras olorus (Hall). (P.) 



Cyclocystoidcs antcccptus Hall. 



Cycloncma hallianum Salter. (Le.) 



Cyclora hoffmani Miller. 



Cyclora minuta Hall. 



Cyclora parvula (Hall). 



Cylindroccelia endoceroidca Ulrich. (L.) 



Cylindroccelia minnesotensis Ulrich. (D.) 



Cyphotrypa informis (Ulrich). (D.) 



Cyrtoceras camurum Hall. (P.) 



Cyrtoceras dunleithcnse Miller and Gnrley. (P.) 



Cyrtoceras eugium Hall. (P.) 



Cyrtoceras feathcrstonhaughi Clarke. (P.) 



Cyrtoceras houghtoni Clarke. (P.) 



Cyrtoceras macrostomum Hall. (P.) 



Cyrtoaras norwoodi Clarke. (P.) 



Cyrtoceras regulare Billings. (Le.) 



Cyrtoceras scofieldi Clarke. (P.) 



Cyrtoceras shumardi Clarke. (P.) 



Cyrtoceras simplex Billings. 



Cyrtoceras sinuatum Billings. (Le.) 



Cyrtoceras tenuistriatum Hall. (P., D.) 



Cyrtoccrina(f) Schoolcraft i Clarke. (D.) 



Cyrtoccrina typica Billings. (Le.) 



Cyrtodonta affinis Ulrich. (D.) 



Cyrtodonta ampla Ulrich. (P.) 



Cyrtodonta billingsi Ulrich. (D., P., A.) 



Cyrtodonta canadensis Billings. (L., Le.) 



Cyrtodonta cingulata Ulrich. (D.) 



Cyrtodonta doclicnsis Foerste. (L.) 



Cyrtodonta glabella (Ulrich). (D., P.) 



Cyrtodonta huronensis Billings. (L., D.) 



Cyrtodonta jancsvillensis Ulrich. (P.) 



Cyrtodonta leucothea Billings. (Le.) 



Cyrtodonta obesa Ulrich. (D.) 



Cyrtodonta oviformis (Ulrich). (P.) 



Cyrtodonta pcrsimilis Ulrich. (P.) 



Cyrtodonta rotulata Ulrich. (D.) 



Cyrtodonta spinifera Billings. (Le.) 



Cyrtodonta subcarinata Billings. 



Cyrtodonta subovata Ulrich. (D., P.) 



Cyrtodonta tenella (Ulrich). (D.) 



Cyrtolitcs dilatatus Ulrich and Scofield. (D.) 



Cyrtolilcs retrorsus fillmorensis Ulrich and Scofield. 



(D.) 

 Cyrtorizoccras isodorus (Billings). (L.) 

 Cyrtorizoceras minneapolis (Clarke). (P.) 



Cyrtospira bicurvata Ulrich. (L.) 

 Cyrtospira parvula (Billings). (Le.) 

 Cythcrclla (?) rugosa (Jones). (Le., D.) 

 Cythcrella (?) subrotunda Ulrich. (D.) 

 Dalmanella hamburgensis (Walcott). (D., L.) 

 Dalmanella rogata (Sardeson). (D.) 

 Dalmanella testudinaria Dalman. (D.) 

 Dckayella prxnuntia Ulrich. (D.) 

 Dekayella prxnuntia echinata Ulrich. (D.) 

 Dckayella prxnuntia multipora Ulrich. (D.) 

 Dekayella prxnuntia nxvigera Ulrich. (D.) 

 Dckayia trenlonensis Ulrich. (D.) 

 Dcrmatostroma tyronensis Foerste. (L.) 

 Dicranelta bicomis Ulrich. (D.) 

 Dicranella marginata Ulrich. (D.) 

 Dicranella (?) simplex Ulrich. (D.) 

 Dicranella spinosa Ulrich. (D.) 

 Dictyonema nccnah Hall. (P.) 

 Dictyorhabdus priscus Walcott. (H.) 

 Dilobella typa Ulrich. (D.) 

 Dinjpbolus canadensis (Billings). (Le.) 

 Dinobolus magnificus (Billings). (Le.) 

 Dinorthis deflccta (Conrad). (P., L.) 

 Dinorthis pectinclla (Emmons). (D., Le.) 

 Dinorthis pectinclla swecnyi (N. H. Winchell). (D.) 

 Drepanella bigencris Ulrich. (P.) 

 Drepanclla crassinoda Ulrich. (L.) 

 Drepanella nitida (Ulrich). (L.) 

 Dystactospongia minor Ulrich and Everett. (L., P.) 

 Dystactospongia rudis Ulrich and Everett. (P.) 

 Eccyliomphalus undulatus (Hall). (P.) 

 Ecci/lioptcrus bcloitensis Ulrich and Scofield. (L., 



P.) 

 Echinosphxrites aurantium (Gyllenhal). (L., K.) 

 Ectomaria pagoda (Salter). (Le., P., D.) 

 Ectomaria prisca (Billings). (Le., P., L.) 

 Edriospongia basalis Ulrich and Everett. (P.) 

 Eichwaldia subtrigonalis Billings. (Le.) 

 Encrinurus raricostatus Walcott. (P.) 

 Encrinurus rarus (Walcott). (P.) 

 Encrinurus trentonensis Walcott. 

 Encrinurus vannulus Clarke. (P.) 

 Endoccras gemclliparum Hall. 

 Endoccras proteiforme Hall. (L., P., D.) 

 Endoccras rapax Billings. 

 Endoccras rottcrmundi (Barrande). 

 Endoccras subannuJatum (Whitfield). (P.) 

 Endoccras siibccntrale Hall. (W.) 

 Endoccras virgatum (Hall). (L.) 

 Endodesma gesneri (Billings). 

 Endodesma ortlwnotum (Meek and Worthen). (P.) 

 Endodesma undosum Ulrich. (P.) 

 Eoharpes pustulosis (Hall). 

 Eotomaria dryope (Billings). (D., P., A.) 

 Eotomaria supracingulata (Billings). (P., D.) 

 Eotomaria vicina Ulrich and Scofield. (P.) 

 Eridotrypa xdilis minor Ulrich. (D.) 

 Eriptychius amcricanus Walcott. (H.) 

 Escharopora angularis Ulrich. (D., P.) 

 Escharopnra confluens Ulrich. (D.) 

 Escharopora? limitaris Ulrich. (t>.) 

 Escharopora subrccta (Ulrich). (D.) 

 Eurychilina longula Ulrich. (L.) 

 Eurychilina obesa L^lrich. (L.) 

 Eurychilina reticulata Ulrich. (D., P.) 

 Eurychilina reticulata incurva Ulrich. (D.) 

 Eurychilina? subxquata Ulrich. (D.) 

 Eurychilina subradiata Ulrich. (D., P.) 



