358 CALIFORNIA ACADEMY OF SCIENCES. 



Strenulla Matt., 1886; Traus. Royal Soc. Canada, vol. 2, p. 154. 



PARvuM Wal. For other references see Anomocare parvum. 



STRENUUS Bill. For other references see Arjraulos strenuus. 



Symphysurus Goldf., 1843; Jahrb. fiir Mineral., 1843, p. 332. 



■? GOLDFDSSi Wal., 1884; Pal. Enreka Dist., Mou. U. S. Geol. Survey, 



vol. 8, p. 95, pi. 12, fig. 16. PogoniiJ group, McCoy's Eidge, Eu- 

 reka Dist., Nev. Cambrian. 

 Telephus Barr., 1852; Syst. Sil. Boheme, vol. 1, p. 890. 



■ AMERICANUS Bill., 1865; Pal. Foss., vol. 1, p. 291, figs. 281. Table 



Head and Pistolet Bay, Portland Creek, N. F. 

 Terataspis Hall, 1863; 16th Eep. New York State Cab. Nat. Hist., p. 223. 

 (See Lichas and Acidaspis.) 



grandis. (See Lichas (Terataspin) grandis Hall.) 



eriops. (See Lichas (Conolichas) eriops Hall.) 



Thaleops Con., 1843; Proc. Acad. Nat. Sei. Phila., vol. 1, p. 332. 



ovatus Con. (See Illcenus ovatus.) 



Triarthrella Hall, 1863; 16th Rep. New York State Cab. Nat. Hist., p. 177. 



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



177, pi. 9, fig. 13. Lagrange Mt., Minnesota. Taconic. 



Triarthrus Green, 1832; Monthly Am. Jour. Geol. vol, 1, p. 560 (June). 

 Green, 1832; Mon. Tril. North America, p. 86. 

 Brongniartia carcinodea Eaton, 1832; Am. Jour. Sci., 1st series, 



vol. 22, p. 166 (March 6). Utica Slate, New York, etc. 

 Brongniartia carcinodea Eaton. 1832; Geol. Text Book, p. .3.3, pi. 1, 

 fig. 3. 

 - — beckii Green, 1832; Monthly Am. Jour. Geol., vol. 1, p. 560, pi. 1, 

 fig. 3 (June). This species should take the older name of car- 

 cinodea. Eaton's paper was published March 6th, 1832, and Dr. 

 Green's article June, 1832. A typical species of the Utica slate. 



beckii Green, 1832; Mon Tril. N. A., p, 86, cast 34, pi. 1, fig. 3. 



■ bechii Harlan, 18.35; Trans. Geol. Soc. Peun., vol. 1, p. 205, pi. 1.5, 



fig. 6. 

 Syn., Paradoxides triarthrus Harlan, 18,35; Trans. Geol. Soc. Penn., 

 vol. l,pl., p. 264, 15, fig. 5. 

 Paradoxides arcuatus Harlan, 1835; Trans. Geol. Soc. Penn., vol. 

 1, p. 265, pi. 15, figs. 1-3. 



■ beckii Harlan, 1835; Med. Phys. Researches, p. 400, pi., fig. 6. 



Syn., Paradoxides triarthrus Harlan, 1835; Med. Phys. Researches, 

 p. 401, pi., fig. 5. 

 Paradoxides arcuatus Harlan, 1835; Med. Phys. Researches, p. 

 402, pi., figs. 1-3. 



beckii Green, 1835; Suppl. Mon. Tril. N. A., p. vii. 



Paradoxides beckii Hall, 1838; Am. Jour. Sci., 1st series, vol. 33, p. 



142, fig. 2. 

 Syn., Paradoxides eatoni Hall, 1838; Am. Jour. Sci., 1st series, vol. 

 33, p. 142, fig. 2. 

 beckii Green, 18.38; Am. Jour. Sci., 1st series, vol. 33, p. 344, 



