64 University of California Ptihlieations in Geology [Vol. 12 



lacking the flaring petals, which extend close to the margin. From 

 S. gabhi (Remond) it is separated by its more depressed test and 

 deep posterior ambulacral notches in the margin. It differs further 

 from »S'. ilancoensis Kew in that the periproct is not so strongly supra- 

 marginal. 



Geologic horizon. — Vaqueros formation, Lower Miocene; Tejon, 

 Upper Eocene formation (Twitchell) (?). Associated with 8. tejo- 

 nensis Kew. 



Localities. — Ilolotype from Devil's Den District, Kern County, 

 California (Twitchell). Figured specmiens from basal beds of the 

 Vaqueros formation in the Tejon Hills, Kern County, California, 

 Univ. Cal. loc. 3358 ; near base of the Vaqueros along the road at the 

 foot of the Casitas grade, Ventura County, California; west of 

 Coalinga, Kern County, California (F. M. Anderson). 



SCUTELLA BLANCOENSIS Kew, n. sp. 

 Plate 11, figures la, lb, Ic 



Cotypcs.—}^os. 11358, 11359, Univ. Calif. Coll. Pal. 



Test small. Measurements of specimen 11358 : anteroposterior 

 diameter 22.3 mm., transverse diameter 23.8 mm., greatest height 

 4.0 mm. Outline subovate, pointed behind. Apical system relatively 

 large and eccentric anteriorly ; four genital pores present. Upper 

 surface considerably depressed, especially in the posterior area ; rises 

 to the apex, which is situated anterior to the apical system and com- 

 paratively close to the margin ; anterior part of the upper surface of 

 tlie test considerably more elevated than the posterior part, and 

 with the margin thickened. Lateral petals elliptical in outline, rather 

 long, narrow, and extending about three-fourths the distance to the 

 margin. Inner rows of pores converging but little at their ends; 

 outer rows converging close to the inner rows at the extremity of the 

 petals with a few sporadic pores beyond the petals, the rows diverging 

 widely. Poriferous areas comparatively wide, each being almost as 

 wide as the interporiferous area. Odd anterior petal wide, broadly 

 open at its extremity, and shorter than the paired petals ; poriferous 

 areas about as Avide as those of the lateral i^etals, but the interporif- 

 erous area is nearly twice the width ; inner rows of pores diverge to 

 the end ; outer rows diverge strongly until about one-half the distance 

 to the end, whence they continue in parallel lines, gradually coming 



