304 CALIFORNIA ACADEMY OF SCIENCES. 



DICELLOCEPHALUS. 



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



vol. 8, p. 40. East side Sierra Valley, east of Pinnacle Peak, 

 Eureka Dist., Nevada. 



CRASSIMARGINATUS Whitf., 1882; Geol. Wisconsin, vol. 4, p. 344, pi. 



27, fig. 14. Lagrange Mt., Minnesota. Potsdam. 



Syn., pepinensis (Hall); 16th Hep. New York State Cab. Nat. Hist. 

 Expl, pi. 11, fig. 2. 



- 1 corax Bill., 1865; Pal. Foss., vol. 1, p. 334, figs. 322 a, b. Point 



Levis, Quebec. Referred to Olenoides? corax Wai., 1884; Ball. 

 U. S. Geol. Survey, No. 30, p. 184. Cf. parabolina spinulosa 

 Wahl. 



CRISTATUS Bill., 1860; Canadian Naturalist, vol. 5, p. 312, fig. 10. 



Taconic. 



- CRISTATUS Bill., 1865; Pal. Foss., vol. 1, p. 404, fig. 384. Point 



Levis, Quebec. This species might be referred to the genus 

 Olenoides. 



DEVIXEI Bill., 1865; Pal. Foss., vol. 1, p. 195, figs. 180, 181. Point 



Levis, Quebec. Probably of the genus Ptychoparia. 



EATONI Whitf., 1878; Ann. Eep. Geol. Survey Wisconsin, 1877, p. 65. 



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



- EATONI Whitf., 1882; Geol. Wisconsin, vol. 4, p. 202, pi. 4, figs. 11- 



17; pi. 10, figs. 4, 5. Devil's Lake Dist., Baraboo, Wis. 



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



vol. 8, p. 89, pi. 9, fig. 19. Prospect Mt., Secret Canon, etc., Nev. 



Taconic. 



- FINALIS Wai., 1884; Pal. Eureka Dist. Mon. U. S. Geol. Survey, vol. 



8, p. 89, pi. 12, figs. 12 a, b. Hamburg Eidge, Eureka Dist., 

 Nev., Pogonip group. 



- FLABELLIFER H. & W., 1877; U. S. Geol. Expl. 40th Par., vol. 4, p. 



227, pi. 2, figs. 29, 30. Pogonip Mt. and Eureka Dist., Nev. 



Potsdam. 

 flagicaudus White. (See Olenoides? flagricauda.) 



granulosus Owen. (See Ptychaspis granulosa.} 



? gothicus H. & W. (See Dorypyge gothicus.) 



- HISINGERI Bill., 1865; Pal. Foss., vol. 1, p. 196, fig. 182. Point Levis, 



Quebec. Probably of the genus Ptychoparia. 



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



vol. 8, p. 90, pi. 1, fig. 10. Hamburg Ridge, Nev. Pogonip. 



? iowensis Owen. (See Lonchocephalus iowensis (Owen). 



- IDLE Wai., 1884; Pal. Eureka Dist. Mon. U. S. Geol. Survey, vol. 8, 



p. 43, pi. 10, fig. 19. Prospect Mt., Bullwhacker Mine, Nev. 



Taconic. 



- LATIFRONS Shum., 1863; Trans. Acad. Sci. St. Louis, vol. 2, p. 101. 



Potsdam. 



