Notices of Memoirs — Dr. Neumayr — On the Russian Jura. 167 
The Upper Jurassic division is represented by light-coloured glau- 
conitic limestones, containing Cephalopods, Gasteropods, and Bra- 
chiopods. Dr. Neumayr found the following fossils in the clay : — 
JParpoceras Brighti, Pratt ; H. lunula, Ziet. ; Perisphinctes scopi- 
nensis, sp. nov. ; P. Mosquensis, Fischer (a characteristie Russian 
form) ; Stephanoceras coronatum, Brug. ; Cosmoceras Jason , Ziet. ; 
and C. Pollux, Rein. ; all in a state of preservation closely resem- 
bling that of the fossils in the Ornatus-clays of Swabia. Of the 
above-named seven forms. five are commonly met with in the Middle 
and Upper Callovian of W. Europe, the zones of Simoceras anceps, 
and of Perisphinctes athleta ; they must be considered as Immi- 
grants ; and even the two others may be modified descendants (?)• of 
Perisphinctes curvicosta, a form widely spread over Central Europe. 
The Fauna of Tchoulkowo is exceptional among the Jurassic 
Faunse of Russia, both by its antiquity and by its striking analogy 
to those of Western Europe. The Fauna from the red and yellow 
Sandstones of Jelatma on the Oka is next related to it. 
The Russian Jurassic formations, in descending order, are : — 
a. Inoceramus-bed of Simbirsk. 
h. Olive-green glauconitic sandstones. with Amaltheus catenulatus, 
Fisch., and Perisphinctes fulgens, Trauts. 
c. Aueella-bed, with Amalth. catenulatus, Fisch., and Aucella Mos- 
quensis. (Upper Moscow bed.) 
d. Beds with Perisphinctes virgatus, von Buch. (Mid. Moscow beds.) 
e. Beds with Amaltheus alternans, von Buch. (Lower Moscow beds. ) 
/. Strata of Tchoulkowo and Jelatma, with Cosmoceras Jason, 
Ziet., and Stephanoceras coronatum, Brug. 
g. Belemnite-shales of Jelatma ; besides several merely local 
deposits. 
According to Dr. Trautschold, the division e answers to the de- 
posits between the lowest “Bathonian” and the uppermost “Oxford- 
ian ; ” division d being the *• Kimmeridgian ; ” and division e the 
“ Portlandian.” 
Dr. Neumayr is of opinion that only ten species of West-Euro- 
pean Cephalopods, all characteristie of the Middle and Upper 
“Callovian” and of the Upper and Middle “ Oxfordian,” are met 
with in the Russian Jurassics, among which only the deposits of 
Tchoulkowo and Galiowa can be paralleled with those of Western 
Europe. The Fauna of the clays of Tchoulkowo and the equivalent 
deposits of Jelatma answer exactly to that of the Upper and Middle 
“ Callovian,” including a number of forms identical with those of 
Western Europe. The horizon of Galiowa (division c) yields forms 
referable to the zones of Aspidoceras perarmatum and Peltoceras trans- 
versarium, together with some specially Russian species. Some 
forms of division d may be considered to be representative types of 
Western forms, such as Perisphinctes virgatus, P. polyplocus, P. 
PaUasianus, d’Orb., and P. Witteanus, Oppel. 
The divisions a, b, and c may be considered as equivalent to the 
Uppermost Jurassics; possibly division a may be even ranked 
among the Cretaceous series. The coneordance with West-Euro- 
