Report of the President. 3 1 



III and IV of Volume II of the Memoirs, pages 129-392, with 

 plates xiii-xx and 315 text figures; Part I of Volume III of the 

 Memoirs, consisting of 228 pages, with 4 plates, and 291 text figures 

 (still in press, though nearly completed). The list of articles pub- 

 lished in 1899, arranged by departments, is as follows : 



DEPARTMENT OF INVERTEBRATE PALAEONTOLOGY. 



Observations on some " Mud Flow" Markings on Rocks from near Albany, 

 N. Y. By R. P. Whitfield. (Bull. XII, pp. 183-188, 3 text figures.) 



Note on a Calcite Group from Bisbee, Arizona. By E. O. Hovey. (Bull. 

 XII, pp. 189-igo, pi. viii.) 



Notice of two very large Lobsters in the Collection of the American Museum 

 of Natural History. By R. P. Whitfield. (Bull. XII, pp. 191-194, pi. ix.) 



Catalogue of the Types and Figured Specimens in the Palteontological Col- 

 lection of the Geological Department, American Museum of Natural History. 

 By R. P. Whitfield, assisted by E. O. Hovey. (Bull. XI, pp. 73-188.) 



Department of Vertebrate Zoology. 



On Mammals from the Northwest Territory, collected by Mr. A. J. Stone. 

 By J. A. Allen. (Bull. XII, pp. 1-10.) 



Descriptions of Five New American Rodents. By J. A. Allen. (Bull. XII, 

 pp. 11-18.) 



Descriptions of Three New Squirrels from South America. By E. W. Nel- 

 son. (Bull. XII, pp. 77-80, 1 text figure.) 



Descriptions of Five Apparently New Birds from Venezuela. By Frank M. 

 Chapman. (Bull. XII, pp. 153-156.) 



Descriptions of Three New Free-Tailed Bats. By Gerrit S. Miller, Jr. 

 (Bull. XII, pp. 173-181, 3 text figures.) 



New Rodents from Colombia and Venezuela. By J. A. Allen. (Bull. XII, 

 pp. 195-218.) 



Report on Birds Received through the Peary Expeditions to Greenland. By 

 Frank M. Chapman. (Bull. XII, pp. 219-244, 8 text figures.) 



History and Character of the Family Natalidse. By Gerrit S. Miller, Jr. 

 (Bull. XII, pp. 245-254, pi. x.) 



Description of Two New Subspecies of Colymbus dominicus Linn. By 

 Frank M. Chapman. (Bull. XII, pp. 255, 256, 1 text figure.) 



The Generic Names Echimys and Loncheres. By J. A. Allen. (Bull. XII, 

 pp. 257-264.) 



Department of Vertebrate Paleontology. 



A Provisional Classification of the Fresh-Water Tertiary of the West. By 

 W. D. Matthew. (Bull. XII, pp. 19-76.) 



The Ancestry of Certain Members of the Canidas, the Viverridee, and Procy- 

 onidse. By J. L. Wortman and W. D. Matthew. (Bull. XII, pp. 109-138.) 



Restoration of Oxyana lupina Cope, with Descriptions of Certain New 

 Species of Eocene Creodonts. By J. L. Wortman. (Bull. XII, pp. 139-148, 

 10 text figures.) 



Fore and Hind Limbs of Carnivorous and Herbivorous Dinosaurs from the 

 Jurassic of Wyoming. By Henry Fairfield Osborn. (Bull. XII, pp. 161-172, 

 8 text figures.) 



