304 CALIFORNIA ACADEMY OF SCIENCES. 



DICELLOCEPHALUS. 



BiLOBATCS Wal., ISSi; Pal. Eiireka Dist. Mon. U. S. Geol. Survey, 



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



Eureka Dist., Nevada. 

 CRASSIMARGINATUS Wliitf., 1882; Geol. Wisconsin, vol. 4, \^. 344, pi. 



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



Syn., 2)ephiensis (Hall); 16th Kep. New York State Cab. Nat. Hist. 



Expl., pi. 11, fig. 2. 



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



Levis, Quebec. Keferred to Olenoides? corax Wal., 1884; Bull. 



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



Wahl. 



CRiSTATus Bill., I860; Canadian Naturalist, vol. o, 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 Ptychojjaria. 

 EATONi Whitf., 1878; Ann. Kep. 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. 

 ■ ? EXPAXsus Wal., 1884; Pal. Eureka Dist. Mon. U. S. Geol. Survey, 



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



Taconic. 

 FiXALis Wal., 1884; Pal. Eureka Dist. Mon. U. S. Geol. Survey, vol. 



8, p. 89, pi. 12, figs. 12 a, b. Hambiirg 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? Jiagricauda.) 



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



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



? iotvensis Owen. (See Lonchocephahis ioviensis (Owen). 



lOLE Wal., 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. 



