Vol. V] DICKERSON— FAUNA OF THE TYPE TEJON 55 



Type : — No. 269, Cal. Acad. Sci. Locality 244, Tejon Quad- 

 rangle, Kern County, California. Tejon group. In east bank 

 of Live Oak Creek about ^ mile from its mouth. Coll., Bruce 

 Martin. 



Named in honor of Mr. F. M. Anderson, Curator, Depart- 

 ment of Invertebrate Paleontology, California Academy of 

 Sciences. 



Tellina howardi, new species 

 Plate 4, figures 2a and 2b 



Shell large, oval, compressed ; beak anterior of center ; an- 

 terior and posterior dorsal margins nearly straight sloping 

 gently; anterior end rounded more broadly than posterior; 

 ventral margin with very great curvature. This is the largest 

 Tellina in the Tejon-Eocene. 



Dimensions : — Length of broken type, 43mm. ; height, 

 30mm. 



Type: — No. 271, and cotype. No. 272, Cal. Acad. Sci. Lo- 

 cality 244, Tejon Quadrangle, Kern County, California. Tejon 

 group. In east bank of Live Oak Creek about three-fourths 

 of a mile from its mouth or from the edge of the San Joaquin 

 Valley and about three miles due east of the mouth of Grape- 

 vine Canyon. Coll., B. Martin. 



Named for Delle Howard Dickerson who has aided the 

 writer in his paleontological studies. 



Semele diaboli, new species 

 Plate 4, figure 4 



Shell of medium size ; beak sub-central ; anterior dorsal mar- 

 gin sloping gently to a well rounded anterior end ; posterior 

 dorsal margin sloping steeply to a sharply rounded posterior; 

 decoration, concentric growth lines only. 



Dimensions: — Length, 31nim. ; height, 24mm. 



Type: — No. 11052, University of California. Locality 469, 

 Mount Diablo Quadrangle, Contra Costa County, California. 

 Tejon group. Near middle of S. E. M of Sec. 21, T. 1 S., 

 R. 1 E., Mt. D. B. L. and M., elevation 1350 feet, on north 

 side of ridge. Coll., R. E. Dickerson. 



Named for the occurrence ia the vicinity of Mount Diablo. 



