CATALOGUE OF TRILOBITES. 261 



ACIDASPIS. 



Dkramiriis hamata Cou., 1S41; otli Anu. Kep. Pal. Dept. New York 

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



Lower Helderberg. 



(Dicranurus) hamata Hall, 18G2; 15th Eep. New York State Cab. 



Nat. Hist., pi. 2, fig. 1. Republication of pi. "2, oth Ann. Eep. 



Pal. Dept. New York Geol. Sur. 



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



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



fig- 17. 

 Ceratoce.])hala {Dicranurus) hamatcs Clarke, 1892. Note on Aciduspis, 



p. 13. 

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



Paul, St. Lawrence Eiver and Canada. Trenton. 

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



3, fig. 13. See Acidaspls gonkita. 

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



Near Lebaunon, Ohio. Hudson. 



Ceraiocephala (Odontopleura) o'nealli Clarke, 1892. Note on Ac't- 



daspis, p. 13. 

 ortoni Foerste 1887; Bull. Deuison Univ., vol. 2, p. 90, pi. 8, iig. 1. 



Near New Carlisle, Ohio. Clinton. 



Ceratocephala (Odontopleura) ortoni Clarke, 1892. Note on Acidanpis, 



p. 13. 

 ■ PARVULA Wal., 1877; Advanced sheets 31st Eep. New York State 



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



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



Ceratocephala {Odontopleura) parvula Clarke, 1892. Note on Aci- 



daspis, p. 13. 



BOMINGERI 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 Ancyrojnjge Clarke, 1892. Note on Acidaspis, p. 10. 



Hamilton. 



spinicjer. (See Bathyurus spinir/er.) 



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



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



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



Ceratocephala {Odonto])leura) trentonensis Clarke, 1892. Note on 

 Acidaspis, p. 13. 



TUBERCULATUS Con., 1840; 3d Ann. Eep. Pal. Dept. New York Geol. 



Survey, p. 205. Lower Helderberg. 



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

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

 Acantholoma splnosa Con., 4th Ann. Eep. Pal. Dept. New Y'ork 

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



