236 PSEUDOCERATITES OF THE CRETACEOUS. 
lateral, and his figure shows this. He consequently considers the species 
as having four principal lateral saddles, whereas they should be counted as 
three. Stoliezka’s figure of the older specimen in his Fossil Cephalopoda of 
Cretaceous Rocks of Southern India also shows distinetly the three princi- 
pal saddles. Kossmat considers this identical with the American P. syrtale, 
but, as has been noted elsewhere, P. tamulicum, and especially schliteri, are 
more like the former. The absence of all except the ventral line of tuber- 
cles and the broad, fold-like costz, broad venter, and stout whorls are as 
peculiar as the sutures in warthi. In the ragged aspect of the sutures and 
broad, flat venter, this species has some resemblance to P. stantoni of the 
Colorado group. This favors the view that this species occurs in India 
somewhat earlier (in the lower Utatur group, which is placed by Kossmat 
in the Cenomanian) than its representative in this country. This evidence 
is in favor of the view stated by Stanton and others that the Colorado is the 
equivalent of the Turonian. 
Age: Cenomanian. 
PLACENTICERAS MEMORIA-SCHLOENBACHI Laube and Bruder. 
Placenticeras memoria-schloenbachi Laube and Bruder, 1887, Paleontogr., Vol. 
XXXII, pl. 23. 
This species has a diameter of 198 mm.; it is smooth with the excep- 
tion of a single inner row of small tubercles on the umbilical shoulder. 
The umbilical zone is well shown in figure, and the ventral zone very nar- 
row and smooth on the cast. The parts of two sutures shown have very 
simple outlines and are wide apart even in what is evidently the parephebic 
or anagerontic stage of this species. 
The outlines are probably more or less worn and have lost their digi- 
tations in part, but could. not in any event probably have been as closely 
approximated as in species like placenta or whitfieldi. Laube and Bruder 
consider that the sutures are similar to those of Placenticeras requienianum 
(VOrbigny, Terr. Jurass., pl. 93, fig. 4), but this species does not belong to 
this genus. 
Age: Turonian. 
