312 CALIFORNIA ACADEMY OF SCIENCES. 



HOMALONOTUS. ILL^NUS. 



DELPHINOCEPHALUS Verueuil, Note sur la parallelisme, etc., p. 47. 

 Syn., atlas Castelneau, 1843; Syst. Sil. de 1'Amer., p. 20, pi. 4, fig. 4. 



giganteus Castelneau, 1843; Syst. Sil de 1'Amer., p. 20, pi. 3, fig. 1. 

 herculaneus Castelneau, 1843; idem, p. 20, pi. 4, fig. 5. 



DELPHIXOCEPHALUS Hall, 1852; Pal. New York, vol. 2, p. 309, pi. 68, 



figs. 1-14. Lockport and Kocliester, N. Y. 



DELPHIXOUEPHALUS Salt., 1865; Mon. Brit. Tril., p. 113, pi. 11, figs. 



1-10. 



- DELPHINOOEPHAUJS Hall, 1883; 12th Ann. Kep. Dept. Geol. Nat. Hist. 



Indiana, 1882, p. 332, pi. 34, figs. 17, 18. 



- DELPHIXOCEPHALUS? Hall, 1875; 28th Kep. New York State Mus. Nat. 



Hist., pi. 34, figs. 17, 18. 



DELPHINOCEPHALUS Hall, 1879; 28th Kep. New York State Mus. Nat. 



Hist., p. 187, pi. 32, figs. 17, 18. 



T rimer UH JACKSONI Green, 1837; Am. Jour. Sci., 1st series, vol. 32, 

 p. 347. Huntingdon county, Penn. Devonian. 



- MAJOR Whitf., 1885; Bull. Am. Mus. Nat. Hist., vol. 1, No. 6, p. 193, 



pi. 22. 4th Binnewater and 5th Biiinewater, Ulster county, N. Y. 



Oriskany. 



- MAJOR Hall, 18S8; Pal. New York, vol. 7, p. 4, pi. 5 a, fig. 1. 



TREXTONEX.SIS Simpson, 1890; Trans. Amer. Philos. Soc., p. 460, fig. 



31, Reedsville, Mifiiu county, Penn. Trenton. 



- VAXUXEMI Hall, 1859; Pal. New York, vol. 3, p. 352, p. 73, figs. 9-14. 



Kingston, Ulster county, N. Y. Lower Helderberg. 



- VAxrxEMi Hall, 1888; Pal. New York, vol. 7, p. 11, pi. 5 b, figs. 1, 2. 

 HOPOLICHAS Dames, 1877; Zeitschr. Deutsch. Geol. Gesell., p. 794. Type, 



Lichas (ffopolichas) tricuspidata Beyr. For a list of the species 

 see Lichas. 

 ILL^XURUS Hall, 1863; 16th Rep. New York State Cab. Nat. Hist., p. 176. 



COXVEXUS Whitf., 1878; Ann. Rep. Geol. Survey Wisconsin, 1877, p. 



66. Devil's Lake region, Baraboo, Wis. Lower Magnesian. 



- COXVEXUS Whitf., 1882; Geol. Wisconsin, vol. 4, p. 203, pi. 4, figs. 3-5. 



EUBEKENSIS Wai., 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 97, pi. 12, figs. 4, 4 a. East slope of the ridge east of 

 Hamburg Kidge, etc., Nev. Pogonip. 



QUADRATUS Hall, 1863; 16th Rep. New York State Cab. Nat. Hist., p. 



176, pi. 7, tigs. 52-57. Osceola Mills, St. Croix River, Wis. 



Potsdam. 



ILUEXUS Dalm., 1826; Paired., p. 50. 

 Syn., Actinolobus Eichw., 1860. 

 AlceMe Cord., 1847. 

 Cryptonymus Eichw., 1825 (in part), not Cryptonymus Eichw., 



1840. 

 Deucalion Chtchegloff, 1827. 



