302 CALIFORNIA ACADEMY OF SCIENCES. 



DALMANITES. 



[Hausmannia) pleuropteryx Hall, 1888; Pal. New York, vol. 7, p. 28, 



pi. 11a, figs. 1-3. Clarksville, Schoharie; also in Oriskany sand- 

 stone, Township of Walpole; Corniferous limestone of Clarence 

 Hollow, etc., N. Y. 



(Oorycephalus) PYGMiEUS Hall, 1888; Pal. New York, vol. 7, p. 56, pi. 



11, figs. 5-8. Boulders, Cauandaigna, N. Y. 



Corniferons. Upper Helderberg. 



RECALLS Hall, 1876; lUus. Devonian Foss. Crust., pi. 11, figs. 1-4. 



Knox, Albanj' county, N. Y. Schoharie. Upper Helderberg. 



[CorycephaluH) regalis Hall, 1888; Pal. New York, vol. 7, p. 55, pi. 



11, figs. 1-4. 

 Asaphus .SELEXURUS Eaton, 1832; Geological Text Book, p. 31, pi. 1, 

 fig. 1. Upper Helderberg. 



Asaphiis SELENURUS Green, 1832; Mon. Tril. N. A., p. 46, casts 14 



and 15. 

 Syn., Calymene? odontocephala Green, 1835; Suppl. Mon. Tril. N. A., 

 p. 9, cast 36. 

 Calymene? odontocephala Green, 1835; Am. Jour.Sci., 1st series, 

 vol. 25, p. 334. 

 Odontocephalus selexurcs Con., 1840; 3d Rep. Pal. Dept. New York 



Geol. Survey, p. 204. 

 Odontocephalus selexurus Vauuxem, 1842; Geol. New York, 3d Geol. 



Dist., pp. 139, 140. fig. 1. 

 Odontocephalus .selexurus Hall, 1843; Geol. New York, 4th Geol. 



Dist., p. 175, fig. 1. 

 Dalmania .selexurus Hall, 1859; r2th Rep. New York State Cab. 



Nat. Hist., p. 88. 

 Dalmania .selexurus Hall, 1861; Des. New Species Foss., p. 56. 



Helderberg Mountains. 

 Dalmania selexurus Hall, 1862; 15th Rep. New York State Cab. Nat. 



Hist., p. 84. Helderberg Mts., Schoharie and Auburn, N. Y. 

 Syn., Odontocephalus? Dalmanites {Odontocephalus) arenarius M. & 

 W., 1868; Geol. Survey Illinois, vol. 3, p. 416, pi. 9, fig. 10. 

 - — selexurus Hall, 1876; Illus. Devonian Foss. Crust., pi. 12, figs. 12- 

 14. 



{Odontocephalus) selexurus Hall, 1888; Pal. New York, vol. 7, p. 49, 



pi. 11 b, figs. 15-21; pi. 12, figs. 1-13. Marbletown, Clarksville, 



Schoharie, etc., N. Y. 

 Dalmania tridexs Hall, 1859; Pal. New York, vol. 3, p. 361, pi. 75, 



figs. 3-6. Schoharie, N. Y. Lower Helderberg. 



Dalmania tridextifera Shumard, 1855; 1st and 2d Geol. Reps. 



Missouri, p. 199, pi. B, figs. 8 a-c. Bailey's Landing, Birming- 



ton, Missouri. Lower Helderberg. 



— tridextifera M. & W., 1868. Pal. Illinois, vol. 3, p. 391, pi. 7, fig. 



16. 



