CRETACEOUS BEDS OF ROGUE RIVER VALLEY. 407 
verse ridges. There are, however, slight markings that indicate 
a periodical interruption of growth. 
Schloenbachia chicoensis (?), (Trask), Gabb; Proc. Cal. 
INCAC OCI VOC Ole py eO2, ply Qin Cale al Volully p. 68, pls. 
13 and 14. 
A number of specimens were collected of a species closely 
resembling A. chicoensis figured by Gabb, as do also most of the 
specimens that I have seen from California. It is, however, 
doubtful if these and Dr. Trask’s figures represent the same 
species. 
Schloenbachtia inflata, Sow ; Min. Conch., II., 1878; Cret. Cephe 
WaGls, AS Ol, 2S ame! Gos Cam, Mies. In@ss., While oy joenae 3. Z0I0), 
One specimen five inches in diameter in fair state of preserva- 
tion, and a large number of smaller ones of this species, varying 
from one-half to one and one-half inches in diameter, were 
obtained. The smaller ones are all well preserved. 
Schloenbachia propinqua, Stol.; Cret. Ceph. Ind., 53, pl. 31; 
Cam, Wess, fOss., JU; Iran 2, Baz, oll, Be. 
One specimen two inches in diameter and a large number of 
smaller ones, one-half to three-fourths inch in diameter, with 
numerous fragments of various sizes, all in good preservation, 
were collected. This fossil, with its numerous bifurcating ribs, 
tubercles, rounded outer margin, undoubtedly represents the 
species to which it is here assigned. 
Schloenbachia, cont. serrato-carinata, Stol.; Cret. Ceph. Ind., 
57, pl. 32. 
A number of fossils, one-half to one and one-half inches in 
diameter were collected, which seem to be of this species. In 
most respects they agree quite well with Stoliczka’s figure, but 
seem to be less deeply grooved along each side of the keel; yet 
he remarks that the grooves are not so deep as figured. In the 
specimens collected the keel is prominent, and in some of the 
specimens serrated, while in others it is not. A double row of 
tubercles near the outer margin ornament the ribs. 
Nautilus, conf. rota, Blanford; Cret. Ceph. Ind., 38, pls. 24 
and 25. 
