408 Forty-fifth Report on the State Museum. 



Palaeontology of New York, vol. iii, 1859, pi. 19, fig. 12. 

 Lower Helderberg group . Schoharie county, N . Y . 



J. Gebhard purchase . 



Palaeontology of New York, vol. iii, 1959, pi. 79, fig. 13. 

 Lower Helderberg group . Schoharie county, N . Y . 



J. Gebhard purchase . 



Palaeontology of New York, vol. iii, 1859, pi. 79, fig. 14. 

 Lower Helderberg group . Near Clarksville, N . Y . 



J. Gebhard purchase . 



Acidaspis Trentonensis, Hall. 1847. 

 (" Acidaspis crosotus Locke." J. Gebhard.) 



Ninth Annual Report New York State Cabinet of Natural History, 



pp. 45-47. 1856. Not figured. 



Trenton limestone, Cape Vincent, N. Y. 



Moses Fames donor. 



Sub-genus ODONTOPLEURA, Murchison. 1839. 

 Acidaspis catticera, Hall. 1888. 

 *Palaeontology of New York, vol. vii, 1888, p. 69, pi. 16b, figs. 1, 2, 

 Corniferous limestone. Camillus, N. Y. 



Palaeontology of New York, vol. vii, 1888, pi. 16b, figs. 3, 4, 5, 

 6,7. 



Corniferous limestone . Cayuga, Ontario . 



Collected by C. D. Walcott, 1878. 



Palaeontology of New York, vol. vii, 1888, pi. 16b, fig. 9. 

 Corniferous limestone . Canandaigua, N. Y. 



J. M. Clarke purchase. 



Palaeontology of New York, vol. vii, 1888, pi. 16b, fig. 13. 

 Schoharie grit . Near Clarksville, N . Y . 



J. M. Clarke purchase. 



Sub-genus DICRANURUS, Conrad. 1841. 

 Acidaspis hamatus, Conrad (sp.). 1841. 

 Ann. Ren. Pal. Dept. N. Y., p. 48. 

 PalSBOntdlogy of New York, vol. iii, pi. 79, fig. 16. 



Lower Eelderberg group. Schoharie county, N. Y. 



,/. Gebhard purchase. 



