THE CHICAGO ACADEMY OF SCIENCES. 



Encrinurus tuberculifrons Weller. 



1907. Encrinurus tuberculifrons. .Weller, This Bulletin, p. 259, pi. 24, 

 figs. 12-13. 



Niagaran: Near Joliet, 111. 



HARPES Goldfuss, 1839. 

 Harpes telleri Weller. 



1907. Harpes telleri. Weller, This Bulletin, p. 213, pi. 20, fig. 2. 

 Niagaran: Milwaukee, Wis. 



HEMICRYPTURUS. 

 Hemicrypturus clintoni Van., see Calymene clintoni (Vanuxem). 



HOMALONOTUS Koenig, 1825. 



Homalonotus atlas Castel., see Homalonotus delphinocephalus (Green). 

 Homalonotus dawsoni Hall. 



1860. Homalonotus dawsoni. Hall, Can. Nat. and Geol., vol. 5, 

 p. 155, fig. 17. 



Arisaig: Nova Scotia. 



1868. Homalonotus dawsoni. Dawson, Acad. Geol. 2nd Ed., p. 

 606, fig. 214. 



Arisaig. 

 Homalonotus delphinocephalus (Green). 



1832. Trimerus delphinocephalus. Green, Monog. Tril, N. A., p. 

 82, fig. 1, plate. 



Williamsville, Niagara Co., N. Y. 



1834. Trimerus delphinocephalus. Harlan, Trans. Geol. Soc. 

 Penn., vol. 1, pt. 1, p. 105. 



Niagara Co., N. Y. 



1834. Brongniartia platycephala. Harlan, Trans. Geol. Soc. Penn., 

 vol. 1, pt. 1, p. 105. 



Lockport, N. Y. 



1843. Homalonotus atlas. Castel., Ess. Syst. Sil. 1'Amer. Sept., 

 p. 20, pi. 4, fig. 4. 



Lockport, N. Y. 



1843. Y H omalonotus giganteus. Castel., Ess. Syst. Sil. 1'Amer. 

 Sept., p. 20, pi. 3, fig. 1. 



Lockport, N. Y. 



1843. Homalonotus herculaneus. Castel., Ess. Syst. Sil. 1'Amer. 

 Sept., p. 20, pi. 4, fig. 5. 



Lockport, N. Y. 



1843. Homalonotus delphinocephalus. Hall, Geol. N. Y., pt. 4, 

 p. 103, fig. 34, tab. org. rem., 11, fig. 1. 



Niagara: Lockport, Rochester, Sweden^and Wolcoot, 



N. Y. 



1852. Homalonotus delphinocephalus. Hall, Pal. N. Y., vol. 2, 

 p. 104, pi. 31, figs. 5a-5b; also p. 309, pi. 68, figs. 1-14. 

 Clinton: Herkimer Co., N. Y. 

 Niagara: Lockport, Rochester and Wolcott, N. Y. 

 1856. Homalonotus delphinocephalus. Bill., Can. Nat. and Geol., 

 vol. 1, p. 320. 



Niagara : Canada. 



