1917] Nomland: New Fossil Corals from the Pacific Coast 189 



Occurrence. — At locality 1131, near base of Agasoma gravidum 

 zone, Oligocene. 



This form occurs at the type locality of Siderastrea clarki Nomland 

 and is associated with such characteristic Oligocene species as Agasoma 

 gravidum (Gabb), Antigona mathewsonii (Gabb), Ancellaria fishii 

 Gabb, Dosinia mathewsonii Gabb, Dosinia whitneyi (Gabb), Molopo- 

 phorus biplioatus Gabb, Mytilus mathewsoni Gabb, Fvsinus (Prisco- 

 fusus) hecoxi Arnold. 



BALANOPHYLLIA, sp. 



It is of interest to note that specimens of Balanophyllia have been 

 discovered recently in beds of middle Fernando, Pliocene, at Fugler 

 Point, eight miles southeast of Santa Maria, Santa Barbara County, 

 California. This genus has heretofore been unknown in the Tertiary 

 deposits of the Pacific Coast later than the Oligocene. This form is 

 associated with a large typical Fernando fauna. 2 



ASTOEIA OLIGOCENE COEALS 



In the Oligocene of the Astoria group of southwestern "Washington 

 several species of corals are present, but the material is only generically 

 identifiable. These are found associated 'with Dcndrophyllia hannibali 

 Nomland or in the same series of beds as that species. The following 

 forms, occurring with a large molluscan fauna, have been determined : 

 Balanophyllia, sp., Plabellum, sp., Paracyathus, sp., Pocillopora (?), 

 sp., Sphenotrochus ( ?), sp., Trochocyathus (two species). 



3 See U. S. Geol. Surv. .Bull. 322, p. 60. 



