CATALOGUE OF TRILOBITES. 311 



HOMALONOTUS. 



Axaphus CRYPTURUS Green, 1834; Traus. Geol. Soc. Pennsylvania, 

 vol. 1, p. 37, pi. 4. Moose River at Auapolis Basin, Nova Scotia. 



Devonian. 

 Asaphusf CRYPTURUS Green, 1835; Suppl. Mon. Tril. N. A., p. 18, 



cast 41. 

 Syn., Asaphu* ditmarn'm Honeymau, 1879; Proc. Nova Scotia Inst., 



vol. 5, p. 18. 



Asaphus? CRYPTURUS Honeymau, 1888; Proc. Nova Scotia Inst., vol. 

 7, pt. 1, p. 63. 



DAWSOXI Hall, 1860; Canadian Naturalist, vol. 5, p. 155. Nova Scotia. 



Silurian. 



DAWSONI Daw., 1878; Acadian Geol. (3d ed.), p. 606, fig. 214. 

 Dipleura DEKAYI Green, 1822; Mon. Tril. N. A., p. 79, casts 30, 31, 



pi. 1, figs. 8, 9. Hamilton. 



Syu., Nuttainia sparsa Eaton, 1832; Geol. Text Book, p. 34. 



Nuttainia sparsa Green, 1832; Mou. Tril. N. A., p. 89, cast 35. 



- Dipleura DEKAYI Vanuxeni, 1842; Geol. New York, 3d Geol. Dist., 



p. 150, fig. 1. 



Dipleura DEKAYI Hall, 1843; Geol. New York, 4th Geol. Dist., p. 



205, fig. 1. 



- DEKAYI Emmons, 1860; Manual Geol., pp. 146, 147, figs. 134, 135. 



DEKAYI Hall, 1861; Des. New Species Foss, p. 85. 



DEKAYI Hall, 1862; 15th Rep. New York State Cab. Nat. Hist., p. 113. 



DEKAYI Hall, 1877; Illus. Devonion Foss. Crust., pis. 2-5. 



- DEKAYI Hall, 1888; Pal. New York, vol. 7, p. 7, pi. 2, figs. 1-12; pi. 



3, figs. 1-5; pi. 4, figs. 1-7; pi. 5, figs. 1-4. Marcellus shales at 

 Flint Creek, Ontario county; Hamilton shales at Bear's Gulf, 

 Schoharie county, and elsewhere in New York. 



Trimuriis DELPHINOCEPHALUS Green, 1832; Monthly Am. Jour. Geol., 



vol. 1, p. 559, pi. 0, fig. 1. Niagara. 



Trimerus DELPHINOCEPHALUS Green, 1832; Mou. Tril. N. A., p. 82, 



pi. 1, fig. 1, cast 32. 



Trimerus DELPHINOCEPHALUS Harlan, 1835; Trans. Geol. Soc. Penn- 

 sylvania, vol. 1, p. 105. 

 Syn., Brongniartia platycophala Eaton, 1832; Geol. Text Book, p. 32, 



pi. 2, fig. 20. 



Brongniartia platycephala Green, 1832; Mon. Tril. N. A., p. 91. 

 Ogygies latisima Eaton, 1832; Am. Jour. Sci., 1st series, vol. 

 21, p. 136 (foot-note). 



DELPHINOCEPHALUS Murch., 1839; Sil. Syst., p. 651, pi. 7 bis, figs. 1 a, 



1 b. 



Syn., ahrendii Roemer, 1843; Verst. Harzgebirges, p. 39, pi. 11, fig. 5. 

 DELPHINOCEPHALUS Hall, 1843; Geol. New York, 4th Geol. Dist., p. 

 103, fig. 34. 



