246 PALAEONTOLOGY OF CALIFORNIA. 



M. cylindrica, Gabb. 



Modiola cylindrica, Gabb; Vol. 1, p. 185, pi. 25, fig. 167. 

 Chico Group, Pence's, Tuscan Springs, Martinez. 



M. major, Gabb. 



Modiola major, Gabb; Vol. 2, p. 191, pi. 31, fig. 88. 

 Shasta Group, Lake and Colusa Counties. 



LITHOPHAGUS, Miihlf. L. oviformis, Gabb. 



Lithophagus oviformis, Gabb; Vol. 1, p. 185, pi. 25, fig. 168. 

 Chico Group, Cow Creek. 



SEPTIFER, Recluz. S. dichotomus, Gabb. 



Septifer dichotomus, Gabb; Vol. 1, p. 186, pi. 30, fig. 261. 

 Tejon Group, Tejon. 



STALAGMIUM, Con. S. concentricum, Gabb, sp. 



Crenclla concent rica, Gabb; Vol. 1, p. 186, pi. 24, fig. 169. 

 Stalagmium concentricum, Con. ; Sm. Check List, No. 96. 

 Tejon Group, Martinez. 



AVICULA, Lam. A. pelltjcida, Gabb. 



Avicula pellucida, Gabb; Vol. 1, p. 186, pi. 25, fig. 172 



Tejon Group, Martinez, Griswold's, Tejon ; transition beds, Lower Lake ; 



Martinez Group, Martinez; Chico Group, Siskiyou Mountains, San Luis, 



Gonzajni. 



MELEAGRINA, Lam. M. antiqua, Gabb. 



Meleagrina antiqua, Gabb ; Vol 2, p. 192, pi. 31, fig. 89. 

 Chico Group, Nanaimo, Vancouver Island. 



INOCEPvAMUS, Sowb. I. Elliotii, Gabb. 



Inoceramus Elliotii, Gabb; Vol. 2, p. 193, pi. 31, fig. 90a. 

 Chico (?) Group, Alcatraz Island. 



