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University of California Publications in Geology 



[Vol. 9 



In the type section of the Tejon group from which Dendrophyllia 

 tejonensis, n.sp., is described the following species, among others, have 

 been reported: Amauropsis alveata Gabb, Cardium breweri Gabb. 

 Ficopsis remondii Gabb, Perrisolax blakei Gabb, Turritella uvasana 

 Conrad, Venericardia planicosta hornii (Gabb). 



THAMNASTERIA SINUATA, n. sp. 



Plate 5, figures 5, 6 



Type in University of California Department of Palaeontology collections, 

 from locality 476, SW % of NW % sec. 22, T. 1 S, R. 1 E, M. D. B. & M. 



Superior portion of corallum flat, curving down at the margin. 

 Calices nearly round, well defined, very unequally distributed on the 

 calicular surface. Columella well developed. Septa twelve, prominent, 

 lamellar, between those are seen in thin section an equal number 

 not as prominent development. Septa-costae continuous with those 

 of the neighboring calices, show a decided tendency to parallel arrange- 

 ment. Synapticula appear to be present. Diameter of calices, about 

 3 mm. 



Occurrence in the lower Tejon Eocene, from locality 476, on south 

 side of Mount Diablo, Contra Costa County, California. 



In the type locality this species occurs with the following char- 

 acteristic Tejon species: Turbinolia pusillanima, n.sp., Ficopsis 

 remondii Gabb, Leda gabbi Conrad, Meretrix hornii Gabb, Tellina 

 remondii Gabb, Turritella merriami Dickerson, Venericardia plani- 

 costa hornii ( Gabb ) . 



GONIOPORA VAUGHANT, n. sp. 



Plate 3, figures 18, 19 



Type in collections of California Academy of Sciences, San Francisco, from 

 locality 101. 



Corallum composite, in type incrusting a fragment of Ostrea. 

 Corralites crowded into polygonal forms with distinct, shallow, calices. 

 Septa twenty-four, thick, perforate, in three cycles, apparently fused 

 in bilateral arrangement characteristic of the genus. Synapticula 

 very numerous, arranged around the columella so as to appear as 

 rather definite circles. Columella well developed, spongy. Diameter 

 of corallites about 2.7 mm. 



