176 Reviews—The Hanoverian Jura and Wealden. 
to the ‘‘ Forest Bed,” and three are new species described for the 
first time. Mr. Newton’s cautious remarks on the distribution in 
time of the species are particularly valuable, and they will be read 
with much interest in connexion with Mr. Clement Reid’s observa- 
tions on the same subject in his Memoir on the Geology of the 
Country around Cromer (which we are promised shortly). Therein 
the Invertebrata are enumerated, and can be taken into consideration 
along with their more highly developed associates, in studying the 
changes of climate, the distribution of life, and the alterations of land 
and water during this interesting period. HB. WW, 
I].—PanonToLoGiscHE ABHANDLUNGEN HERAUSGEGEBEN VON DAMES 
unp Kayser. Erster Band, Heft 1. C. Srruckmann. ‘Neue 
Beitrage zur Kenntniss des Oberen Jura und der Wealden 
bildungen der Umgegend von Hannover. Mit 5 Tafeln.” 
ERR STRUCKMANN, who is already well known to the 
readers of the Guo. Mac., opens a new Palzeontographica, 
which has lately been issued in Berlin, with a supplementary con- 
tribution to the paleontology of the Upper Jurassics of the neigh- 
bourhood of Hanover. On the appearance, in 1878, of “ Der Obere 
Jura der Umgegend von Hannover,” this author was able to list 404 
species as then known to occur in the beds from the ‘“ Heersumer 
Schichten ” (Upper Oxfordian, or perarmatus-zone) to the “‘ Purbeck- 
mergel and Serpulit” inclusive. The species listed in his works on 
the Wealden beds are far less numerous, but include several plants. 
The present work is devoted to filling up the gaps left in previous 
publications. In four years Herr Struckmann has added 70 species 
to the previous tables, and of these 16 are described as being new. 
Both new and old are very well figured in the five quarto plates. 
Deducting three species claimed for the Purbeck Wealden, there 
remain 67 species not previously noted in the beds which range from 
the “ Heersumer Schichten ” to the Upper Portland (Himbeckhaiiser 
Plattenkalke), and besides this the range of some of the fossils noted 
previously has been extended. Herr Struckmann has evidently hit 
upon a good locality lately in the Lower Coralline Oolite, where 
several additional Corals and Polyzoa have been found. English 
geologists can hardly fail to be surprised that Ostrea deltoidea, Sow., 
should now be noted for the first time, and that too in the Lower 
Coralline Oolite. An entire quarto plate is devoted to a pair of 
valves of this expensive oyster, an admirable likeness no doubt. 
After the Lower Coralline Oolite the Péeroceras-beds of the Middle 
Kimmeridge come in for the most important accessions. The Lower 
Portland is for the first time credited with Cardium dissimile, Sow., 
Ammonites gigas, Zieten, and Am. giganteus, Sow., whilst the Upper 
Portland is enriched by very considerable additions, most of which, 
however, had already been noted in the underlying subdivisions, and 
are not therefore entitled to appear in the table, page 85. Amongst 
the species now recognized in beds referred to the Upper Portland 
are Mytilus autissiodorensis, Cott., Corbula autissiodorensis, Cott., 
