NORTH AMERICAN rAL.EONTOLOGY. 237 



Cope, Edward Drinker. Second Coiitiuiuitioii of Researches among 

 the Batrachia of the Coal Measures of Ohio. Kead before the Ameri- 

 can Philosophical Society, June 19, 1885. (Proc. Amer. Phil. Soc, 

 Vol. XXII, pp. 405-408, October, 1885. Philadelphia.) 



Describes the new genus and species Cercariomoiyhus parvisquamia, geu.et sp. 

 uov., and the following new species : Anisodexis encliodus, Cera\erpeton divari- 

 catum. He also describes what lie considers to be "Claspers of Bratra- 

 chia." 



Cope, E. D. The Genealogy of the Vertebrata as learned from Pale- 

 ontology'. An address delivered before the Yassar Brothers Institute, 

 January 27, 1885. Trans. Yassar Bros. Inst., vol. Iii, pt. 1, 1884-'85, 

 pp. GO-80. Poughkeepsie, 1885.) 



lu conclusion, the progressive may be compared with the retrogressive evolu- 

 tion of the Vertebrata, as follows: In the earlier periods and with the 

 lower iorms, retrogressive evolution predominated. In the higher classes, 

 progressive evolution has predominated. When we consider the nature of 

 the first class of vertebrates (the Tunicata) in this respect, and compare it 

 with that of the last class (the Mammalia), the contrast is very great. 



Cope, E. D., and Wortman, J. L. The mammalian fauna of the Post- 

 l)liocene deposits. Fourteenth Annual Report of the Geology and 

 Natural History Survey of Indiana; John Collett, director. (Amer. 

 Nat., vol. XX, p. 48, January, 188G. .Philadelphia.) 

 Brief abstract of. 



Cope, E. D. The Sternum of the Dinosauria. (Amer. Nat., vol. xx, 

 pp. 15;^-155, figs. 1, 2, February, 1880. Philadelphia.) 



Some evidence as to the nature of the sternum in the Dinosauria, and the pres- 

 ence or absence of clavicles in this order. 



Cope, E. D. Corrections of Notes on Dinocerata. (Amer. Nat,, vol. 

 XX, p. 155, February, 188G. Philadelphia.) 



In the Naturalist for .lune, 1885, the author gave a synopsis of the genera of 

 this suborder, which was partly based ou information derived from Pro- 

 fessor Marsh's work. Among them was included the supposed genus 

 Tctheopsis, whose .character consisted in the absence of inferior canine 

 and incisor teeth. The author now learns on good authority that the 

 symphyseal region in the specimen in question is entirely constructed of 

 plaster of Paris. The genus Tetheopsis must then be regarded as an arti- 

 fact. 



The basal part of a s^uU which the author described under the head of Uinta- 

 therium lacustrc, Mar.bli (U. S. Geol. Survey Terr., iii, p. 5'J2), turns out to 

 belong to a Palwosijops. 



Cope, E. D. Prof. E. D. Cope, ou a New Type of Perissodactyle Un- 

 gulate from the Wasatch Eocene of Wyoming Territory, United 

 States of America. (Geol. Mag., new ser., Decade in, vol. [ii, pp. 

 49-52, pi. II, February, 1880. London.) 



A description of the genus Phenacodus with a figure of Phenacodus primaris 

 Cope, reproduced through the kindness of Professor Cope. 



Cope, E. D. Edestus and Pelecopterus, etc. (Geol. Mag., new ser.. 

 Decade iii, vol. ii, p. 141, March, 1880. London.) 



Notes that Piijchodus being a shark, is not likely to have a pectoral arch and 

 fin like that of Pelecopterus. " Moreover these pectoral spines have been 



