468 Eevieics — Prof. Cojje's Extinct Vertebrates of N. America. 



eight divisions into which the Cretaceous series of Bohemia has been 

 divided. Numerous profiles. of sections and well-executed figures of 

 the principal fossils accompany the text. 



From a slight sketch of the Cretaceous sti'ata as a whole, it seems 

 to present the characters of a littoral or comparatively shallow- water 

 deposit. Although no very close comparison can be made between it 

 and the deeper- water deposits of the same formation in France and 

 England, yet it has been ascertained that the Bohemian Cretaceous 

 series corresponds only to the Cenomanian, Turonian and part of the 

 Senonian, and therefore the Gault and the divisions of the Lower 

 Cretaceous are absent below ; and its highest zone is below that of 

 Belemnitella quadrata. By Prof. Krejci and the author, the 

 Bohemian series has been divided, chiefly on palseontological 

 grounds, into eight divisions, which, with the exception of the 

 lowest, are of marine origin. The lowest or Perucer division con- 

 sists of sandstones containing a rich Flora and some sparse remains of 

 Verbebrates, Molluscs, and Insects. These beds rest unconformably 

 on Silurian or Carboniferous strata, and are of Lower Cenomanian age. 

 The division above, or Korycaner beds, are limestones, sandstones, 

 and conglomerates, characterized by Trigonia sulcataria, Pecten asper, 

 and Ostrcea diliwtana. Next above are the Weissenberg and 

 Malnitzer beds, principally of sandstones — some glauconitic — of 

 Turonian age. The former of these divisions contains numerous fish- 

 remains, many of which are identical with those of the Chalk at 

 Lewes ; some of the other fossils present are also common to the 

 French Craie Chloritee. The Iser, Teplitzer, Priesener and Chlomeker 

 divisions are regarded as Senonian. From the first of these the 

 author enumerates 175 species of fossils; the details of the latter 

 yet remain to be worked out. 



I^ IB ^7" I IE -^AT S. 



Memoirs on Extinct North- American Vertebrates, by Professor 

 E. D. Cope, in the American Naturalist.^ (Extinct Khinoceroses 

 and their Allies, Dec. 1879; Extinct Cats, Dec. 1880; Extinct 

 Dogs, March, 1883; Permian Batrachia, Jan. 1884; The 

 Creodonta, March and April, 1884 ; The Tertiarj"- Marsupialia, 

 July, 1884; The Condylarthra, Aug. and Sept. 1884; The 

 Amblypoda, Dec. 1884 and Jan. 1885 ; The Lemuroidea and 

 Insectivora, May, 1885.) 



IN this valuable series of contributions to a knowledge of the 

 marvellous extinct Vertebrate Fauna of North America, Prof. 

 Cope informs us in a letter that he has intended to give a resume in 

 a somewhat popular form of work which either has been or will be 

 published in fuller detail as opportunity occurs. 



Before briefly noticing a few of the more interesting forms, we 

 must premise that we are scarcely pi'epared to accept the extremely 

 complex classification of the Mammalia which Prof. Cope propounds; 



1 We have only space to cite a few from this large series of memoirs. 



