350 CALIFORNIA ACADEMY OF SCIENCES. 



PTYCHOPAKIA. 



Conoceph. halli Hartt. (See Ptychoparia orestes Hartt.) 

 Dicellocephalus HISINGERI Bill.; Matthew, Diffusion of the Cambrian 

 fauna, 1893, p. 11, refers this species to the Conocephalites. 



- HOUSENSIS Wai., 1886; Bull. U. S. Geol. Survey, No. 30, p. 201, pi. 25, 



fig. 5. House Range, Antelope Springs, Utah. Taconic. 



Conoryphe (Conocephalites) KINGII Meek, 1870; Proc. Acad. Nat. Sci. 



Phila., vol. 22, p. 63. 

 Conocoryphe (Conocephalites) KINGII Meek, 1877; U. S. Geol. Expl. 



40th Par., Palaeont., vol. 4, p. 20, pi. 1, fig. 4. House Kange, 



Antelope Springs, Utah. Taconic. 



Conocoryphe (Ptychoparia) KINGII Meek, 1873; 6th Ann. Rep. U. S. 



Geol. Survey Territories, 1872, p. 487. 

 Conocoryphe (Ptychyparia) KINGII White, 1876; U. S. Geog. and Geol. 



Surveys West 100th Mer., Palaeont., vol. 4, p. 40, pi. 2, figs. 



2 a, b, c. 

 Llostracus KINGII Brogg., 1886; Geol. Foreningens, Stockholm, Fdr- 



haiidl., vol. 8, p. 205. 



- KINGII WaL, 1886; Bull. U. S. Geol. Survey, No. 30, p. 193, pi. 27, 



figs. 4, 4 a. 



- L^VICEPS WaL, 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 54, pi. 10, figs. 17, 18. White Pine Dist., Nev. Taconic. 

 Conocephalites (Pterocephalus) LATICEPS H. & W., 1877; U. S. Geol. 



Expl. 40th Par., Palaeont., vol. 4, p. 221, pi. 2, figs. 4-7. West 



side Pogonip Mts., White Pine, Nev. Taconic. 



Pterocephalus LATICEPS" Wai., 1884; Pal. Eureka Dist., Mon. U. S. 



Geol. Survey, vol. 8, p. 59. 

 ? LINNARSSONI WaL, 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 47, pi. 9, figs. 18, 18 a. Prospect Mt. Group, Secret 



Canon, etc., Nev. Taconic. 



Liostracus PANOPE WaL, 1890; Proc. U. S. Nat. Mus., vol. 13, p. 275, 



pi. 21, fig. 13. Spring Creek Canon, Black Hills, Dakota. Taconic. 



- LLANOENSIS WaL, 1890; Proc. U. S. Nat. Mus., vol. 13, p. 272, pi. 20, 



figs. 3, 4 and 5. Packsaddle Mt., Llano Co., Texas. Taconic. 



Loganellus LOGANI Devine, 1863; Canadian Naturalist, vol. 8, p. 95, 



fig. Point Levis, Quebec. 



Olenus? LOGANI Bill., 1865; Pal. Foss., vol. 1, p. 201, figs. 185, 186. 

 Syn., (Loganellus) quebecensis Bill.; idem, p. 203. 



- LOGANI WaL, 1884; Bull. U. S. Geol. Survey, No. 10, p. 36. 

 Crepkephalus (Loganellus) MACULOSDS H. &W., 1877; U. S. Geol. Expl. 



40th Par., Paleeont., vol. 4, p. 215, pi. 2, figs. 21, 25, 26 ( ?). Eureka, 

 Nev. Taconic. 



- MACULOSUS WaL, 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, pp. 269, 271. 



- METISENSIS WaL, 1890; 10th Eep. U. S. Geol. Survey, p. 651, fig. 68. 



Olenellus zone. In conglomerate at Metis, Quebec, Canada. 



