358 CALIFORNIA ACADEMY OF SCIENCES. 



STRENULLA Matt., 1886; Trans. Royal Soc. Canada, vol. 2, p. 154. 



PARVUM Wai. For other references see Anomocare parvum. 



STRENUUS Bill. For other references see Agraulos strenuus. 

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



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



vol. 8, p. 95, pi. 12, fig. 16. Pogonip 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 Rep. New York State Cab. Nat. Hist., p. 223. 

 (See Lichas and Acidaspis.) 



grandis. (See Lichas (Terataspis} grandis Hall.) 



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



THALEOPS Con., 1843; Proc. Acad. Nat. Sci. 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. 33, 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. 



- beckii Harlan, 1835; Trans. Geol. Soc. Penn., vol. 1, p. 205, pi. 15, 



fig. 6. 

 Syn., Paradoxides triarthrus Harlan, 1835; 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, 1838; Am. Jour. Sci., 1st series, vol. 33, p. 344, 



