OLIGOCENE FORMATIONS. 



15 



List of Tej'in Jormotion (fMirin) foxsih — Continued. 



GASTEROPODA — ci mtinued. 



* Conns horni Gabb. 



* Conns remondi Gabb. 

 Cordiera gracillinia Cooper. 



* Cordiei'a niicrnptygma Gabl). 

 *Cypri«a (Lnponia) bayerqnei Gabb. 

 Cypriea (Epona) matbewsoni Gabb. 

 *Dentaliuni cooperi Gabb. 



* Dentalium straniinenni Gabb. 

 Diodus tenuis Gabb. 



Drillia ullreyana Cooper. 

 *Enspira alveata Conrad. 



* Fasciolaria io Gabb. 

 Fasciolaria la-viusi'ula (Tabb. 



* Fasciolaria i^inuata Galili. 

 Ficopsis cooperi Gablj. 



* Ficopsis horni Galjl). 

 Ficopai.s remondi Gabl). 

 *Fu8Us oalifornicus Conrad. 

 *Fusus diaboli Gabb. 

 *Fusus martinez Gabb. 

 Fusus supraplanus Cooper. 

 Galerns e.Kcentricus Gabb. 

 Gyrodes dowelli White. 

 Loxotrema turrita Gabb. 

 *Lunatia horni Gal)b. 

 *Lunatia nueiformis (iabb. 

 Lunatia sbumardiana Gabb. 

 Jlangilia saturalis Cooper. 

 Margaritella crenulata Gabb. 

 Megisto.stoma striatum Gabb. 

 Mitra cretacea Gabb. 



Mitra gimplicissima Cooper. 

 *Morio (Sconsia) tubereulatus Gabb. 

 Nassa antiquata Galil). 

 *Na8sa cretacea Gabb. 



(;.\STER0i>(>i)A — continued. 



*Xatica uvasana (ial)b. 



*Naticina obliqua Gabb. 



Neptunea (Tritonofusus) cretacea (Tabb. 



Neptnnea? graciHs Gabb. 



Nejitunea? supraplicata (ialj)). 



Nerita (Tbeliostyla) triangulata Gabb. 



Neverita globosa Gabb. 



* Neverita secta Galjb. 

 *OHvella matbewsoni GabV). 



* Perissolax blakei Conrad. 

 Pleurotoina perkinsiana Cooper. 

 Potamides carbonicola Cooper. 

 Potamides? davisiana Cooper. 

 *Rimella canalifera (ialili. 

 Rimella simplex Gal)b. 



Scalaria (OpaHa) matliewsoni Gabb. 



*Siplionodentalium pusillnm (iabb. 



*Spirocrypta pileum Galib. 



*Surcula claytonensis (Jal)!). 



Surcula crenatospira Cooper. 



Surcula inconstans Cooper. 



Surcula monilifera Cooper. 



Surcula prfeattenuata (iabb. 



Surcula raricostata Gabb. 



*Surcula sinuata Gabb. 



Terebra californica Gabb. 



Terebra wattsiana Cooper. 



*Tritonium californicum Gabb. 



Tritonium (Trachytriton) diegoensis Gabb. 



*Tritonium (Trachytriton) fusiforme Gabb. 



*Tritonium horni Gabb. 



*Tritonium paucivaricatum Gal)b. 



*Tritonium (Trachytriton) tejonensis (iabb. 



*Tritunium whitneyi Gabb. 



TiuTitilla niartinezensis Gabl). 



OLIGOCENE. 



The recognition of Oligocene .strata on the western coast of North America 

 has been more or less uncertain. Doctor Dall " has recognized what he considers 

 to be an Oligocenc fauna from several localities in the northwestern part of 

 Oregon, but as very little detailed paleontologic work has been done in that 

 section no adequate lists of the fossils are available. Certain gray shales in the 

 vicinity of Porter, Chehalis County, \Yash., and shales near Bean Point, King 

 County, and along the Strait of 8an Juan de Fuca, on the nortli side of Clallam 

 County, in the same State, contain a fauna which may also be Oligocene. 



a-DUler. J. S., Seventeenth Ann. Kept. U. S. Geol. Survey, pt. 1, 1896, p. 464 



