leoingy and Mineraloij]/. 



E:icl. s 



iibjrot 



oul 



no to th 



e <n-e'it number of s"] 



)ecies (1 



iisoovei 



the be 





a \c 



rv luv-c 



' olie; and the latter will 



make, , 



Pret:u-( 







o ,>ucli 



vohames. These tw< 





1 addit 





o'luin 



c, ill tin 



" same series, by Dr 



. Leidy 



. The 







tion : 



ill the s| 



)ecies thas far diseox 



ered in 



the Cr 



ous \\l 



'St of 



the 



Mississippi, and to describe 



in full 



those 



kuown 



by tl 





nor. i' 



rofe^sor Cope, in an ii 



iitrodno 



torv cl 



r/r"; 



fiih 



VV'a 



, '■ on th< 

 rt T of t 



^ sicrnilieaiice of paleo 

 he classification and 



ntoloo-i 

 distril 



calscie 



Cretan 





leuo. 



it> of the West ; in Part II, i 



rives " 



De-crii 



of tllO ' 



L"r(-tacooii^ 



Vertebi 



•atesof the Westf'^ 



and in 





troduoi 





j^nop 



.is of the 







tes'of: 



America The 57 plates of ilhistrations are full of figures, and 



The w hole number of species of Reptiles in the American Cre- 

 taceous beds is stated as follows: Dinosaurs, 18; Pterosaurs, 4; 

 Crocodili.uis, 1 J ; Sauropterygia (Plesiosaur>, etc.), 13; Testudi- 

 nates, 4-^ ; Pythonoinorphs (the Mosasaur tribe), 50 = 147. Of 

 the last tribe, 15 species occur in the Greensand of Xew Jersey, 7 

 in the Kotten limestone of Alabama, 26 in Kansas, and one Irom 

 each, North Carolina, Mississippi and Xebraska. Only four are 

 known from Europe. 



T^-ofessor «.\)i)e, besides bringing out bis own laiLTc contribu- 

 tion':; to the subiect, mentions also those of Dr. Lcidv aid I'lo- 

 fc'-sor Marsh, yet not always in a way to do them "lull ju^tirt.'. 

 He appears to have forgotten one of his* statements, -when penninL^ 

 the note to page 124, on Clidastes propi/thou. The noti na<ls a- 



'^'••Viof.'s.or Marsh (American Jo-irnal <.i ^' ien<v an.i Ait^. 1^7^ 



^.tX "^ 



