66 University of California Publications in Geology [Vol.9 



BALANOPHYLLIA VARIABILIS, n. sp. 



Plate 4, figures 2, 3, 4, 13 



Type from University of California Department of Palaeontology collections, 

 from locality 714, NE y 4 of SB y 4 sec. 21, T. 1 S, R. 1 E, M. D. B. & M. 



Corallum variable in shape from elongate to short cornute, curved 

 in the direction of the lesser transverse axis. Cross-section elliptical 

 to subeircular. Wall strong, vesicles not numerous. Costae granular, 

 rather wide, rounded, with narrow intercostal grooves ; on some speci- 

 mens a tendency is shown to have every fourth costa of more prominent 

 development. Septa in five cycles, lateral faces granulated, thin at 

 calice but becoming thicker as base is approached, third and fourth 

 cycles fused to the third. Columella somewhat fasicular, in some 

 sections cut near the calice, however, the columellar space seems to be 

 traversed largely by extensions of septa of the first three cycles. 

 Greater transverse diameter, 10.7 mm. ; lesser transverse diameter, 

 10.3 mm. ; height of corallum, perhaps about 45 mm., but exact height 

 unknown since in the material at hand no complete specimen of the 

 longer variety could be found. 



Occurrence at University of California localities 507D, 714, 1853, 

 in the upper Tejon Eocene. 



This species, on account of its slight superficial resemblance to 

 Troehoeyathus striatus Gabb, has heretofore been identified as such 

 by California palaeontologists. Balanophyllia variabilis, n. sp., how- 

 ever, seems to occur more commonly in the Tejon group than T. 

 striatus Gabb. In one of the old collections at the University of 

 California the two are from the same locality. It is not known to 

 what extent, however, this material can be relied upon. 



STEPHANOPHYLLIA CALIFORNICA, n. sp. 



Plate 3, figures 11, 12, 13 



Type, University of California Department of Palaeontology collections, 

 from locality 716, on south side of Mount Diablo, Contra Costa County, Cali- 

 fornia. 



Corallum simple, planoconvex lens-shaped. Base discoidal. 

 Costae ninety-six, of these the first three cycles reach the center, the 

 two last cycles fused to the ones preceding it. Mural pores well 

 defined. Calice convex, marked by a rather deep depression in the 

 center. Septa ninety-six ; of these the primary and secondary reach 



