NORTH AMERICAN rAL.EONTOLOGY. 237 



Cope, Edward Drinker. Second Contiuiuitiou of Researches among 

 the Batracbia of tbe Coal Measures of Ohio. Head before the Ameri- 

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

 Vol. XXII, pp. 403-408, October, 1885. Philadelphia.) 



Describes the uow senus and species Ceicariomoiyhus parvisquamis, gen.et sp. 

 nov., aud the followiug ucw species : Auisodexisenchodus, Ccraierpeton divari- 

 catum. He also describes what bo 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 Vassar Brothers Institute, 

 January 27, 1885. Trans. Vassar Bros. Inst., vol. in, pt. 1, 1884-'85, 

 pp. 60-80. Poughkeepsie, 1885.) 



In conclusion, tbe progressive may be compared with the retrogressive evolu- 

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

 lower forms, retrogressive evolution prodoniiuated. In the higher classes, 

 progressive evolution has predominated. When we consider the nature of 

 the first class of vertebrates (the Tnnicata) 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- 

 ])liocciie deposits. Fourteenth Annual Report of the Geology and 

 Naturalllistory 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 iu this order. 



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

 XX, p. 155, February, 1880. Philadelphia.) 



In tlie Naturalist for June, 1885, the author gave a synopsis of tbe genera of 

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

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

 Teiheopsis, 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 Teilicopsis must then be regarded as an arti- 

 fact. 



The basal part of a skull which the author described under the head of Uinta- 

 therium lacustre, Marsh (U. S. Geo!. Survey Terr., iii, p. 592), turns out to 

 belong to a Palaiosyo2)s. 



Cope, E. J). Prof. E. D. Cope, on 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. in, pp. 

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



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

 Cope, reproduced through tbe kindness of Professor Cojje. 



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

 Decade in, vol. n, p. 141, March, 1886. London.) 



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

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



