238 KECOKD OF SCIENCE FOR 1886. 



Cope, E. D. — Continued. 



frequently fonutl associated with tin; jaws and teeth of the ' snout fishes' 

 of the Kansas Chali\, which have been described under the generic head of 

 Erisichihe Cope. Several species are known (see Bulletin U. S. Geol. Sur- 

 ■ vey Terrs., in, l'^87), and one of them is probably the Xij^hias D'lxoni of 

 Agassiz, from the chalk of Sussex, England. These genera can not be re- 

 ferred to any of the existing orders of fishes, on account of the peculiar 

 structure of the pectoral arch. The author therefore places them in an 

 especial one, the Actinopleri (see Proceedings Amer. Assoc. Adv. Science, 

 1877-'78, p. 299). 



Cope, E. D. Upper Miocene (Loup Fork Beds) in eastern Mexico. 

 (Amer. Xat., 1885, \). 494; Amer. Jour. Sci., 3d sen, vol. xxxi, p. 310, 

 April, 188G. New naven.) 

 Abstract of. 



Cope, E. D. The Vertebrate Fauna of the Ticholeptus Beds. (Amer. 

 Nat., vol. XX. pp. 3G7-369, April, 188C. Philadelphia.) 



Gives lists of the species found in the Ticholeptus bed on the Cottonwood 

 Creek, Oregon, and in Montana; the only species common to both listsis 

 .the Blastomerijx borealis. The Ticholeptus horizon is interesting as tbat in 

 which the genus Mastodon makes its first appearance iu America. It is 

 noAV shown to be the last which contains the genus Anchitherium. It is 

 intermediate in all respects between the Middle and Upper Miocene forma- 

 tions of the West, as represented by the John Day and Loup Fork beds. 



Cope, E. D. The Plagiaulacidie of the Puerco Epoch. (Amer. Nat., 

 Vol. XX, p. 451, May, 18SG. Philadelphia.) 



Reviews briefly the three species already described from this group, and de- 

 scribes the new species Xeo})lagiaidax molcstus, from an entire inferior fourth 

 premohir. 



Cope, E. D. Notes on Pheuacodus. (Geol. Mag., new ser.. Decade 

 in, vol. Ill, pp. 238-239, May, 1886. Loudon.) 



States that in the article in the Geological Magazine for February, pp. 4y-ri2, 

 pi. II, the editor omitted to state the author's more mature views liublished 

 in the American Naturalist for 1885 and for 1884. 



It thus appears that Lemurine forms were the ancestors of all Placental Mam- 

 malia, as was already anticipated by Haeckel in his far-seeing " Schiip- 

 fuugsgeschichte." 



Cope, E. D. Note on Erisichthe. (Geol. Mag., new ser., Decade iii, 

 vol. Ill, p. 239, May, 1886. London.) 



Defends the nse of the name Erischthc, against Mr. Davies's note in the March 

 number of the Geological Magazine, where he wishes him to use the name 

 l'rotos2)hi/r(Bna Lcidy. 



Cope, E. D. Vertebrata of the Swift Current Creek region of the Cy- 

 press Hills. (Ann. Pep. Geol. and Nat. Hist. Surv. Canada, 1885. 

 New series, vol. i, pp. 79c-85c. Published May, 1886. Montreal.) 



The region mentioned is in the district of Assiniboina, Northwest Territory, 

 about longitude 1C9, latitude 49° 40'. The author considers the beds in 

 question to belong to the White River or Oligocene epoch. 



Describes the new species Mcnodus angust'igenis, and mentions generically an- 

 other species of Menodus and two species of Ttstudinata, Trionyx, and Sty- 

 lemya, sp. 



