CATALOGUE OF TRILOBITES. 261 



ACIDASPIS. 



Dicranurus HAMATA Con., 1841; 5th Ann. Rep. Pal. Dept. New York 

 Geol. Survey, p. 39, pi. 1, tig. 1. Albany and Schoharie counties. 



Lower Helderberg. 



- (Dicranurus) HAMATA Hall, 1862; 15th Rep. New York State Cab. 



Nat. Hist., pi. 2, fig. 1. Republication of pi. 2, 5th Ann. Rep. 

 Pal. Dept. New York Geol. Sur. 



- HAMATA Hall, 1859; Pal. New York, vol. 3, p. 371, pi. 79, figs. 15-19. 



- HAMATA M. & W., 1868; Geol. Survey Illinois, vol. 3, p. 390, pi. 7, 



fig. 17. 



Ceratocephala (Dicranurus) HAMATUS Clarke, 1892. Note on Acidaspis, 

 p. 13. 



- HORANI Bill., 1863; Geol. Sur. Canada, p. 190, fig. 190. Bay of St.' 



Paul, St. Lawrence River and Canada. Trenton. 



- tda W. & M., 1865; Mem. Boston Soc. Nat. Hist., vol. 1, p. 106, pi. 



3, tig. 13. See Acidaspis goniata. 



O'XEALLI Miller, 1875; Cincinnati Quart. Jour., vol. 2, p. 86, fig. 9. 



Near Lebannon, Ohio. Hudson. 



Ceratocephala (Odontopleura) O'NEALLI Clarke, 1892. Note on Aci- 

 daspis, p. 13. 



ORTOXI Foerste 1887; Bull. Denison Univ., vol. 2, p. 90, pi. 8, fig. 1. 



Near New Carlisle, Ohio. Clinton. 



Ceratocephala (Odontopleura) ORTONI Clarke, 1892. Note on Acidaspis, 

 p. 13. 



PARVTJLA Wai., 1877; Advanced sheets 31st Rep. New York State 



Mus., p. 16. Trenton Falls, N. Y. Trenton. 



- PARVULA Wai., 1879; 31st Rep. New York State Mus., p. 69. 

 Ceratocephala (Odontopleura) PARVULA Clarke, 1892. Note on Aci- 

 daspis, p. 13. 



ROMLSGERI Hall, 1888; Pal. New York, vol. 7, pp. 71, 224, pi. 16 b, 



figs. 15-18. Little Traverse Bay, Mich. Used for the type of the 

 subgenus Ancyropyge Clarke, 1892. Note on Acidaspis, p. 10. 



Hamilton. 

 *piniger. (See Bathyurus spiniger.) 



- TREXTOXENSIS Hall, 1847; Pal. New York, vol. 1, p. 240, pi. 64, figs 



4 a-f. Bay of Quinta on Lake Ontario. Trenton. 



TREXTOXEXSIS Emmons, 1855; American Geology, vol. 1, p. 216, fig. 73. 

 Ceratocephala (Odontopleura) TREXTONENSIS Clarke, 1892. Note on 



Acidaspis, p. 13. 



TUBERCCLATUS Con., 1840; 3d Ann. Rep. Pal. Dept. New York Geol. 



Survey, p. 205. Lower Helderberg. 



Syn., Acantholoma Con., 1840; 3d Ann. Rep. Pal. Dept. New York 



Geol. Survey, p. 205, fig. 3. 



Acantholoma spinosa Con., 4th Ann. Rep. Pal. Dept. New York 

 Geol. Survey, p. 39, pi. 1, fig. 3. 



