DILLER.] MAEIKE DEPOSITS NEAR EEL RIVER. 39 
At Crescent City, in a nonindurated deposit, Mr. Diller found Peeten parmeleei 
and Terebratalia hemphilli, species heretofore known only from the southern Cali- 
fornian Pliocene. In my opinion this bed must be held to be of the same age as 
that at San Diego. 
To sum up. I incline to the belief that the Rio Dell horizon should be referred to 
the Upper Miocene; it is certainly younger than the Empire beds, possibly younger 
than the San Pablo, but older than the Merced horizon. 
The determinations of the several localities, beginning at the base of 
the Ferndale section, are as follows: 
5562. North slope of Bear Ridge, by the stage road nearly 7 miles south of Fern- 
dale; elevation 1.950 feet. Macoma sp., Acila sp., fine brown shale, proba- 
bly Miocene. 5564 and 5565 are similar, with casts of Yoldia, Neverita, 
and fish bones. 
5566. Four and one-fourth miles south of Ferndale, on stage road to Bear River. 
Bed 18 inches thick. Very badly crushed, friable brown shale, with defect- 
ive casts of Peeten, Yoldia, Area, Cardium. Siliqua, Neverita, Tapes, Pec- 
ten like meekii, Pectenlike opuntia, Pleurotoma perversa Gabb, Neptunea, 
Capidns, and Balanus. Upper Miocene? 
In the Eel River section, lying at the base 5574, opposite Scotia; " cer- 
tainly Miocene — Empire beds probably." 5573, below Scotia, right bank 
by fording. ' ' Crab remains — Miocene? ' ' 
5567-8-9-70. Bluffs opposite Rio Dell. 5576. By slide below Rio Dell. Upper 
Miocene of Rio Dell. Peeten dilleri n. sp., Yoldia impressa Conrad (Mio- 
cene), Neptunea altispira Gabb (Miocene), Priene n. sp. (Miocene). Spi- 
sula (Miocene), Macoma sp. (Miocene), Tapes staleyi Gabb (Miocene- 
Pliocene) , Neptunea n. sp., Cardium like corbis, Neverita (Miocene?) , Bela 
sp., Siliqua near lucida, Yoldia near scissurata, Serripes gronlandicus 
Beck (Miocene-Pliocene), Macoma like tenera Leach? Nassa near mendica, 
Dentalium sp., Balanus sp., Peeten propatidus Conr. (Miocene-Pliocene), 
Marcia near subdiaphana (Olig.-Rec), Tresus near nuttallii, but dis^ 
tinct, Thracia sp., Panomya sp., Echinarachnius near interstriata Blake. 
In this list those noted as Miocene are known from the Empire beds. 
5577. Below mouth of Price Creek in Eel River. Crushed fragments in a soft 
matrix, Pliocene? These include, besides fragments, Neverita and Purpura 
decemcostata, not found in older beds. It may even be Pleistocene. 
As a result of Dr. D all's recent examination of the Neocene deposits 
in the Eel River region, he has furnished the following notes: 
Notes on the beds along the "Wildcat road." — At the base of the beach bluff 
the same basal metamorphic sandstones (No. 7) noted at Crescent City, with 
numerous small white veins of quartz, calcite, or borate of lime, which are cov- 
ered unconformably by heavy beds of gravel, perhaps the equivalent of the basal 
Miocene gravel at Crescent City, occur, but in much greater thickness and mass, 
while in the places I was able to examine these beds of pebbles and coarse gravel 
are directly covered with the later alluvium (No. 2 and No. 3) without exhibiting 
any of the finer grained beds, such as carry Miocene fossils at Crescent City. As 
in the case of the Crescent City Miocene, they dip gently away from the sea, and 
are usually arched over the irregularities of the metamorphic sand rock (No. 7). 
Above the gravels at the north end of the beach bluffs occur the yellow horizontal 
sandstones (Nos. 2 and 3) noticed at Crescent City. Here they cap the gravels at 
several points, but are absent in other places. 
On the Capetown or Wildcat road the exposures of rock, except in a few places, 
are poor, and as a rule the beds exposed arc either fragmental or not indurated. 
