194 University of California Publications in Geology [Vol. 11 



Family Eupsammidae 



Genus DENDROPHYLLIA 



DENDROPHYLLIA CALIFORNIANA Nomland 



Dendrophyllia calif omiana Nomland, Univ. Calif. Publ., Bull. Dept. Geol., 

 vol. 10, no. 13, pp. 188, 189, 1917. 



The type of this species came from the basal beds of the San 

 Ramon formation ; outcrops in creek bed about one-half mile south of 

 the town of Walnut Creek, University of California locality 1131. 



Family Fpngidae 



Genus SIDERASTREA Blainville 



SIDERASTREA CLARKI Nomland 



Siderastrea n. sp. Clark, Univ. Calif. Publ., Bull. Dept. Geol., vol. 9, no. 2, 

 p. 15, 1912. 



Siderastrea clarki Nomland, Univ. Calif. Publ., Bull. Dept. Geol., vol. 9, 

 no. 5, p. 65, 1916. 

 Type obtained from University of California locality 1131. 



Subkingdom ARTHROPOD A 

 Class CRUSTACEA 



Superorder CIRRIPEDIA 

 Genus BALANUS Linne 



BALANUS sp. 

 Plate 20, figures 13 and 14 

 At least two distinct species of Cirripedi-a belonging to the genus 

 Balanus were determined by the writer; both are from the San Ramon 

 formation. The material at hand is rather poor and no opercular 

 valves have been found. The two best specimens are figured as indi- 

 cated above. 



