276 CALIFORNIA ACADEMY OF SCIENCES. 



ASAPHUS. ATOPS. 



selenurus. (See Dalmanites selenurus.) 



stokesi. (See ProetiCs stokesi.) 



susa: Calvin; MSS. 



sus^ Whitf., 1882; Geol. Wiscousiu, vol. 4, p. 236, pi. 5, fig. 3; pi. 



10, Hg. 8. Ai^ple Kiver, just across the Illinois line. Trenton. 



TKTRAGONOCEPHALUS Green, 1834; Am. Jour. Sci., 1st series, vol. 25, 



p. 135. 



TETRAGONOCEPHALUS Green, 1835; Suppl. Mon. Tril. N. A., p. 12, cast 



38. Found in boulder of bituminous shaly limestone in New 

 York State. 

 Paradoxides tetragonocephalus Emm., 1839; DeTril., etc., p. 34. 



trenlonends. (See Lichas trentonensis.) 



trhmgulatus Whitf., 1880; Ann. Rep. Geol. Survey Wisconsin, 1879, 



p. 59. This siDecies is referred to Asaphus homalonotoides Wal., Final 

 Report, vol. 4, p. 237, pi. 5, tig. 4. Sec. 5T., 5 R., 5 W., Grant 

 county, Wisconsin. Trenton. 



TRiMBLii Green, 1837; Acad. Nat. Sci. Phila., Jour., vol. 7, p. 224. 



Huntingdon county, Penn. Devonian. 



TRIMBLII Green, 1837; Am. Jour. Sci., 1st series, vol. 32, p. 348. 



Ogyf/ia ? vetustus Hall, 1847; Pal. N. Y., vol. 1, p. 227, pi. 60, fig. 1. 

 Mohawk Valley, New York. Trenton. Hudson. 



Ogygia ? vetustus Emmons, 1855; Am. Geol., vol. 1, pt. 2, p. 216, 

 fig. 72. 



{laotelus) vigilaxs M. & W., 1870; Proc. Acad. Nat. Soi. Phila., p. 53. 



Hudson. 



(Isotelwi) viGiLANS M. & W., 1875; Geol. Illinois, vol. 6, p. 497, pi. 2.S, 



fig. 6. Carroll county, near Mount Carroll; Oswego, Kendall 

 county, Illinois. 



wiscoNSEXsis Wal., 1876; 28th Rep.N. Y. State Mus. Nat. Hist., p. 97. 



Riissia, Herkimer county, N. Y. Mineral Point and Plattsville, 



Wis. Trenton. 



AspiDOLiTES Con., 1841; 4th Ann. Rep. Pal. Dept.New York Geol. Survey, 



p. 48. 

 Atops Emmons, 1844; Taconic System, p. 20. 



Syn., Conocoryphe Cord., 1847; Prodr., p. 139, pi. 2, fig. 10. 

 Conocephalites baileyi Hartt., 1868; Acadian Geol., p. 645 (3d ed.) 



St. John's group at RatclifTs Millstream, N. B. 

 Conocori/phe baileyi Matt., 1884; Trans. Royal Soc. Canada, vol, 1, 



p. Ill, pi. 1, figs. 22-27. 

 Cojiocoryphe (Bailiella) baileyi Matt., 1884; Trans. Royal Soc. 



Canada, vol. 1, p. 1, fig. 22. 

 Conocoryphe (Salteria) baileyi Wal., 1884; Bull. U. S. Geol. Survey, 

 No. 10, p. 32, pi. 4, figs. 3, 3 a; pi. 5, figs. 7, 7 a. The author 

 herein proposed the siibgenus Salteria (corrected to BailieUa) for 



