312 CALIFORNIA ACADEMY OF SCIENCES. 



HOMALONOTUS. ILL^NUS. 



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



Syu., atlas Castelueaii, 1843; Syst. Sil. de I'Amer., p. 20, pi. 4, fig. 4. 

 fjirianteiis C&atelne&w, 1843; Syst. Sil de I'Ainer., p. 20, pi. 3, fig. 1. 

 herculaneus Castelueau, 1843; idem, p. 20, pi. 4, tig. 5. 



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



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



DELPHINOCEPHALUS Salt., 1865; Mou. Brit. Tril., p. 113, pi. 11, figs. 



1-10. 

 DELPHINOCEPHALUS Hall, 1883; 12th Auu. Eep. Dept. Geol. Nat. Hist. 



Indiana, 1832, p. 332, pi. 34, figs. 17, IS. 

 DELPHINOCEPHALUS? Hall, 1875; 2Stli Eep. New York State Miis. Nat. 



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

 DELPHINOCEPHALUS Hall, 1879; 28th Eep. New York State Mns. Nat. 



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

 Trimerus jacksoni Green, 1837; Am. Jour. Sci., 1st series, vol. 32, 



p. 347. Huntingdon county, Peau. Devonian. 



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



pi. 22. 4th Binuewater aud 5th Biunewater, Ulster county, N. Y. 



Oriskany. 



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



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



31, Eeedsville, Miffin county, Penn. Trenton. 



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



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



VANUXEMI Hall, 1888; Pal. New York, vol. 7, p. U, pi. 5 b, figs. 1, 2. 



HopoLiCHAS Dames, 1877; Zeitschr. Deutsch. Geol. Gesell., p. 794. Tj'pe, 



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



see Lkhas. 

 ILL.EXURUS Hall, 1863; 16th Eep. New York State Cab. Nat. Hist., p. 176. 

 coNVEXus Whitf., 1878; Ann. Eep. 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. 



EUREKENSis Wal., 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 Eidge, etc., Nev. Pogonip. 



■ • QUADRATUS Hall, 1863; 16th Eep. New York State Cab. Nat. Hist., p. 



176, pi. 7, figs. 52-57. Osceola Mills, St. Croix Eiver, Wis. 



Potsdam. 

 ILL.ENUS Daliu., 1826; Pahed., p. 50. 

 Syn., Actiaolohus Eichw., 1860. 

 Alceste Cord., 1847. 

 Cnjptonymus Eichw., 1825 (in part), not Criipfonymus Eichw., 



1840. 

 Deucalion ChtcheglofT, 1827. 



