Vol. VII] WARING— STRATIGRAPHIC AND FAUNAL RELATIONS 71 



deeply channeled interspaces; ends of ribs abruptly termin- 

 ated at outer edge and forming- a chain of elongated tubercles 

 on either edge of the squared back, as keels; thus differing 

 from Placenticeras pacificum, which has only faint keels, and 

 only slightly channeled interspaces between the ribs. None 

 of these tubercles is developed on the sides as in Placenticeras 

 californicum. The young of the three species show the dif- 

 ferences more pronounced. The young of Placenticeras 

 saiictccmonicce has fine ribs with deeply impressed interspaces, 

 and Placenticeras californicum has very coarse ribs which are 

 knotted near the inner margin and tuberculated near the outer 

 margin. Locality 8. L. S. J. U. Pal. Coll. 



List of Martinez Fossils From the Calabasas 

 Quadrangle, Southern California 



None of these Martinez species occurs in the Chico. 



Anthozoa : pages 



Flabellum remondianum Gabb, 4 73, ii8 



Trochocyathus zitteli Vaughan, 5 73, Ii6 



Brachiopoda : 



Kingena simiensis. new species, 4 /3>, ii6 



Pelecypoda : 



*Cardium cooperii Gabb, 4 74, ii8 



Crassatellites branneri Waring, 4 74, 120 



Crassatellites grandis Gabb, 4 74, 116 



Cucullsea mathewsonii Gabb, 5 75, 116 



Glycimeris veatchi major Stanton 75, 112 



Leda alaeformis Gabb. 4 76, 116 



*Leda gabbi Conrad, 4 76, 118 



Lima perrini, new species, 4 76, 112 



Macrocallista stantoni, new species, 4 77, 120 



Miltha parsonsi, new species, 4 78, 116 



Opis virginalis, new species, 4 78, 120 



Ostrea idrisensis Gabb, 5 78, 118 



Periploma undulifera Gabb, 5 79 



* Species found also in the Tejon. 

 The numbers following specific names refer to the following localities marked on 

 the map, fig. 3, p. 51: 



Loc. 4 Martinez area in the Simi Hills, Ventura County. 



Loc. 5 Martinez area, south of the Santa Monica Mountains, Los Angeles County. 

 Loc. 6 Tejon north of secondary fault in the Simi Hills, Ventura County. 

 Loc. 7 Tejon from south of the Santa Monica Mountains, Los Angeles County. 

 Loc. 8 Tejon from the McCray wells, Ventura County. 



