394 BULLETIN f>2, UNITED STATES NATIONAL MUSEUM. 



Deltacriuus 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 ChoLx, Newfoundland. 



Deltoceras vanlngeni 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 Rauff. 



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



Dendroclonella rugosa Rauff. 



Dendroclonella rugosa Rauff, Palseontographica, 41, 1895, p. 252, pi. 18, figs. 8, 



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

 Niagaran (Brownsport): Perry County, Tennessee. 



