30 Report of the President. 



DEPARTMENT OF MAMMALOGY AND ORNITHOLOGY. 



Bulletin. Volume XIX. 



J. A. Allen. " Description of a New Species of Sigmodon from Ecuador." 

 (Pages 99-100.) 



J. A. Allen. " Report on the Mammals Collected in Northeastern Siberia 

 by the Jesup North Pacific Expedition, with Itinerary and Field Notes by 

 N. G. Buxton." (Pages 101-184.) 



J. A. Allen. " Descriptions of New Rodents from Southern Patagonia, 

 with a Note on the Genus Euneomys Coues, and an Addendum to Article IV. 

 on Siberian Mammals." (Pages 185-196.) 



J. A. Allen. " Mammals Collected in Alaska and Northern British Colum- 

 bia by the Andrew J. Stone Expedition of 1902." (Pages 521-567.) 



J. A. Allen. "List of Mammals Collected by Mr. J. H. Batty in New 

 Mexico and Durango, with Descriptions of New Species and Subspecies." 

 (Pages 587-612.) 



J. A. Allen. "A New Deer and a New Lynx from the State of Sinaloa, 

 Mexico." (Pages 613-615.) 



DEPARTMENT OF VERTEBRATE PALEONTOLOGY. 



Memoirs. Volume I. 

 H. F. Osborn. "The Reptilian Subclasses Diapsida and Synapsida and 

 the Early History of the Diaptosauria." (Pages 449-508, plate xl, and 24 

 text figures.) 



Bulletin, Volume XIX. 



O. P. Hay. " On Certain Genera and Species of North American Creta- 

 ceous Actinopterous Fishes." (Pages 1-95, plates i-v, and 72 text figures.) 



W. D. Matthew. " The Fauna of the Titanotherium Beds at Pipestone 

 Springs, Montana." (Pages 197-226, with 19 text figures.) 



W. D. Matthew. "A Fossil Hedgehog from the American Oligocene." 

 (Pages 227-229, with 1 text figure.) 



W. K. Gregory. "Adaptive Significance of the Shortening of the Ele- 

 phant's Skull." (Pages 387-394, plate xxiii, and 4 text figures.) 



O. P. Hay. "On a Collection of Upper Cretaceous Fishes from Mount 

 Lebanon, Syria, with Descriptions of Four New Genera and Nineteen New 

 Species." (Pages 395-452, plates xxiv-xxxvii.) 



Barnum Brown. " A New Species of Fossil Edentate from the Santa Cruz 

 Formation of Patagonia." (Pages 453-457, with 2 text figures.) 



Henry Fairfield Osborn. " Omitholestes hermanni, A New Compsog- 

 nathoid Dinosaur from the Upper Jurassic." (Pages 459-464, with 3 text 

 figures.) 



J. W. Gidley. "A New Three-toed Horse." (Pages 465-476.) 



J. W. Gidley. "On Two Species of Platygonus from the Pliocene of 

 Texas." (Pages 477-481, with 5 text figures.) 



Henry Fairfield Osborn. " Glyptotherium texanum, A New Glyptodont, 

 from the Lower Pleistocene of Texas." (Pages 491-494, plate xliii.) 



