CATALOGUE OF TRILOBITES, 261 



ACIDASPIS. 



DicranuruH hamata Con., 1S41; 5th Ann. Rep. Pal. Dept. New York 

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



Lower Helderberg. 



(Dkranurus) hamata Hall, 1862; 15th Kep. 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. 

 Ceraiocephala (Dicrfmurns) hamatu.s Clarke, 1892. Note on A cidaspis, 



p. 13. 

 hokani Bill., 1863; Geol. Sur. Canada, p. 190, fig. 190. Bay of St. 



Paul, St. Lawrence River and Canada. Trenton. 

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



3, fig. 13. See Acidaspis (joniata. 

 o'nealli Miller, 1875; Cincinnati Quart. Jour., vol. 2, p. 86, fig. 9. 



Near Lebannon, Ohio. Hudson. 



C'erutocej)hala (Odontopleura) o'nealli Clarke, 1892. Note on Aci- 



daspis, p. 13. 

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



Near New Carlisle, Ohio. Clinton. 



Ceraiocephala (Odontopleura) ortoni Clarke, 1892. Note on Acidaspis, 



p. 13. 

 PARVULA Wal., 1877; Advanced sheets 31st Rei^. New York State 



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



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



Ceraiocephala [Odontopleura) parvcla Clarke, 1892. Note on Aci- 

 daspis, p. 13. 



KOMINGERI 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. 



spiniger. (See Bathyurus spinigcr.) 



TREXTONENsis Hall, 1847; Pal. New York, vol. 1, p. 240, jdI. 64, figs 



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



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



Ceraiocephala [Odontopleura) trextonensis Clarke, 1892. Note on 

 Acidaspis, p. 13. 



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



Survej-, 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. 



