COlsTTEIsTTS OF "VOL. XIVII. 



IP J^S,T I- 

 ARTICLE I. 



Description of a Skull of Megalonyx leidyi, n. sp. By Josua Linclahl, Ph.D. (With 5 plates) ... 1 



ARTICLE ir. 

 On the Homologies of the Posterior Cranial Arches in the Reptilia. By E. D. Cope. (With 5 plates) . . 11 



ARTICLE III. 

 A Synopsis of the Species of the Teid Genus Cnemidophorus. By E. D. Cope. (With 8 plates) ... 27 



:f>j^I2.t it. 

 article iv. 



The Tribute Roll of Montezuma. Edited by Dr. Daniel Gr. Brinton, Henry Phillips, Jr., and Dr. J. Cheston 



Morris. (With 6 plates) 53 



Part I. — The Written Language of the Ancient Mexicans. By Daniel G. Brinton, M. D., LL.D. 



Part II.— The Tribute Roll. By Henry Phillips, Jr. 



Part III. — Physical and Ethnographical Characteristics. By Dr. J. Cheston Morris. 



T=.i^TaT I IT- 

 ARTICLE V. 



The Saprolegniacese of the United States, with Notes on Other Species. By James Ellis Humphrey, Sc.D. 



(With 7 plates) 63 



ARTICLE VI. 



Researches upon the Chemical Properties of Gases. By Francis C. Phillips, Ph.D. (With 3 cuts and 



2 plates) ' 149 



