214 PALEONTOLOGY OF CALIFORNIA. 



HELICANCYLUS, Gabb. H. JEQUICOSTATUS, Gabb. 



Ptychoceras cequicostatus, Gabb; Vol. 1, p. 74, pi. 13, fig. 20. 



H. cequicostatus, Gabb ; Vol. 2, p. 141, pi. 25, tig. 20, a-g. 



Shasta Group, Cottonwood Creek, Alderson's Gulch, and Eagle Creek, Shasta 



y-1 



County. 



DIPTYCHOCERAS, Gabb. D. L^EVIS, Gabb. 



D. Icevis, Gabb ; Vol. 2, p. 144, pi. 25, fig. 21, a, b. 

 Shasta Group, Cottonwood Creek. 



BACULITES, Lam. B. CHICOENSIS, Trask. 



B. Chicoensis, Trask ; Proc. Cal. Acad., 1856, p. 85, pi. 2, fig. 2. 

 B. Chicoensis, Gabb ; Vol. 1, p. 80, pi. 17, fig. 27, 27 a ; pi. 14, fig. 27 b, 29, 29 a, 

 Chico Group, Chico, Pence's, Cottonwood, Orestimba, and San Diego ; Mar 

 tinez Group, Martinez. 



B. OCCIDENTALIS, Meek. 



B. ovatus, ? Meek; Tr. Alb. Inst., Vol. 4, p. 48. 



B. occidentalis, Meek ; loc. cit. , p. 49. 



Id., Meek; Proc. Phil. Acad., 1861, p. 316. 



B. sp. indet., Gabb ; Vol. 1, p. 81, pi. 14, fig. 28 b; pi. 17, fig. 28, 28 a. 



Chico Group, Vancouver Island. 



B. INORNATUS, Meek. 



B. inornatus, Meek; Proc. Phil. Acad., 1861, p. 316. 

 Sucia Island, Gulf of Georgia. 



GASTEROPODA. 

 TYPHIS, Montf. T. ANTIQTJUS, Gabb. 



T. antiquus, Gabb ; Vol. 1, p. 82, pi. 18, fig. 31. 

 Tejon Group, Maritnez, Tejon. 



FTJSTJS, Lam. F. MARTINEZ, Gabb. 



F. Martinez, Gabb; Vol. 1, p. 82, pi. 18, fig. 32. 

 Tejon Group, Martinez, Tejon. 



