394 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Deltacrinus tunicatus (Hall). 



Calceocrinus tunicatus Hall, 28th Rep. New York State Mus. Nat. Hist., mus. ed., 



1879, p. 147, fig. 1; llth Ann. Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 



281, fig. 1. 

 Niagaran (Waldron): Waldron, Indiana. 



Deltacrinus typus (Ringueberg). 



Calceocrinus typus Ringueberg, Annals New York Acad. Sci., 4, 1889, p. 402, 



pi. 10, fig. 8. 

 Clinton (Rochester): Lockport, New York. 



DELTHYRIS ACUTILIRATA Conrad. See Platystrophia acutilirata. 

 DELTHYRIS BIALVEATA Conrad. See Spirifer (Eospirifer) radiatus. 

 DELTHYRIS BRACHYNOTA Hall. See Platystrophia biforata. 

 DELTHYRIS CRISPA Dalman. See Spirifer (Delthyris) crispus. 

 DELTHYRIS DECEMPLICATUS Hall. See Spirifer (Delthyris) sulcata. 

 DELTHYRIS EXPANSUS Emmons. See Pterotheca expansa. 

 DELTHYRIS LYNX Hall. See Platystrophia biforata and P. lynx. 

 DELTHYRIS NIAGARENSIS Owen. See Spirifer (Delthyris) niagarensis. 

 DELTHYRIS PLICATUS Owen. See Spirifer (Delthyris) vanuxemi. 

 DELTHYRIS RADIATA Billings. See Spirifer (Eospirifer) radiatus. 

 DELTHYRIS RUGATINA Conrad. See Spirifer (Eospirifer) sulcata. 

 DELTHYRIS? RUGICOSTA Schuchert. See Spirifer (Delthyris) rugicosta. 

 DELTHYRIS SINUATUS Hall. See Bilobites bilobus. 

 DELTHYRIS STAMINEA Hall. See Spirifer (Delthyris) crispus. 

 DELTHYRIS SULCATA Hisinger. See Spirifer (Delthyris) sulcata. 



DELTOCERAS Hyatt. Genotype: D. planum Hyatt. 



Deltoceras Hyatt, Proc. Amer. Phil. Soc., 32, 1894, p. 449. Miller, N. A. Geol. 

 Pal., 2d App., 1897, p. 772. Ruedemann, Bull. New York State Mus., 90, 

 1906, p. 480. 



Deltoceras planum Hyatt. 



Deltoceras planum Hyatt, Proc. Amer. Phil. Soc., 32, 1894, p. 450. 

 Canadian (Quebec): Port au Choix, Newfoundland. 



Deltoceras vaningeni Ruedemann. 



Deltoceras vaningeni Ruedemann, Bull. New York State Mus., 90, 1906, p. 480 



pis. 25-28, figs. 39-41. 

 Chazyan (Crown Point): Valcour Island, New York. 



DEMIRASTRITES URCEOLUS Eisel. See Monograptus urceolus. 



DENDROCLONELLA Rauff. Genotype: D. rugosa Banff. 



Dendroclonella Rauff, Palaeontographica, 41, 1895, p. 252. 



Dendroclonella rugosa Rauff. 



Dendroclonella rugosa Rauff, Palaeontographica, 41, 1895, p. 252, pi. 18, figs. 



3-6; pi. 24, fig. 1. 

 Niagaran (Brownsport) : Perry County, Tennessee. 





