LIST OF PUBLICATIONS. 



199 



CocKERELL, T. D. A. Two fossil insecta 

 from Florissant, Colorado, with a dis- 

 cussion of the venation of the Aeshnine 



dragon -flies. 



Proc. U. S. Nat. Mus., 45, 



No. 2000, June 21, 1913, 



pp. 577-583, 3 figs. 



Gives a description and figure of a 



new species belonging to the family 



Aeshnidaj, followed by a key to the 



principal genera of Aeshninse, based 



on the venation. 



GiDLEY, James Williams. Notice of the 

 occurrence of a Pleistocene camel north 



of the Arctic Circle. 



Smithsonian Misc. Colls., 

 60, No. 26, Mar. 21, 1913, 

 pp. 1, 2. 

 A brief account of the discovery of a 

 single phalanx of a camel foimd asso- 

 ciated with remains of an undoubted 

 Pleistocene fauna, from a locality on 

 Old Crow River, Yukon Territory, 

 well within the Arctic Circle. The 

 discovery extends the known distri- 

 bution of this important group of 

 quadrupeds and furnishes further 

 evidence of milder climatic conditions 

 in Alaska during at least a part of the 

 Pleistocene, and favors the theory of 

 an Asiatic-Alaskan land connection 

 during that period. 



An extinct American eland. 



Smithsonian Misc. Colls., 

 60, No. 27, Mar. 22, 1913, 

 pp. 1-3, pi. 1. 

 A new species of Pleistocene ante- 

 lope, apparently closely related to the 

 living eland of Africa, is described. 

 Its probable migration in Pleistocene 

 times, its relationship with the ante- 

 lope, and former known distribution 

 are also briefly discussed. It is sug- 

 gested that the species here described, 

 represented by a specimen from a 

 Cumberland, Maryland, cave deposit, 

 found its way from some locality in 

 Asia across a then existing land con- 

 nection between Asia and Alaska, 

 thence migrating directly to the east- 

 ern coast region by a route north of 

 the Great Lakes. 



A recently mounted zeuglodoB 



skeleton in the United States National 

 Museum . 



Ptsc. U. S. Nat. Mus., 44, 



No. 1975, Apr. 30,' 1913, 



pp. 649-654, pis. 81, 82, 



figs. 1-3. 



A brief history of the finding and 



preparation of the specimen is given, 



with figures and description of the 



mounted skeleton. Its probable re- 



GiDLEY, James Williams — Continued. 



lationships to other groups of mam- 

 mals is briefly discussed. The propo- 

 sition advanced by Abel, who held 

 that the pelvic bones had been 

 wrongly interpreted by Lucas, con- 

 tending that they represented the 

 coracoids of a large bird {Alaba- 

 mornis gigantea), is discussed and 

 refuted as being untenable. 



GiLMORE, Charles W. A new dinosaur 



from the Lance formation of Wyoming. 



Smithsonian Misc. Colls., 



61, No. 5, May 24, 1913, 



pp. 1-5, 5 figs. 



A preliminary description of 



ThescelosauTUS neglectus, a new genus 



and species of the Ornithopoda. 



Hay, Oliver P. Notes on some fossil 

 horses, with descriptions of four new 



species. 



Ptoc. U. S. Nat. Mus., 44, 

 No. 1969, Apr. 30, 1913, 

 pp. 569-594, pis. 69-73, 

 28 figs. 

 The status of the two species Equua 

 fraternus Lsidy and E. complicatus 

 Leidy is here discussed at length. It 

 is pointed out that the type selected 

 by Cope for the former remains the 

 type according to the established 

 rules of nomenclature, the one later 

 selected by Gidley having no stand- 

 ing. Thus E. fraternus becomes a 

 rather indeterminate species, not 

 readily distinguished from E. com- 

 plicatus, while a new name and new 

 type are selected to represent the 

 smaller species described by Leidy 

 and later discussed by Gidley. 

 Three new species of horses are de- 

 scribed. 



Description of the skull of an ex- 

 tinct horse, found in central Alaska. 



Smithsonian Misc. CoUs., 

 61, No. 2, June 4, 1913, 

 pp. 1-18, pis. 1,2, figs. 1-8. 

 Describes a new subspecies of horse 

 (Equus niobraremis alaskx) founded 

 on a nearly complete skull from near 

 Tofty, Alaska. The author notes 

 that the Alaskan skull differs but 

 slightly from Equus niobrarcnsis Hay, 

 with which he compares it, but con- 

 cludes that it should be signalized as 

 a distinct form. Comparison is also 

 made with E. przevalskyi and other 

 living species. Discusses at length 

 other discoveries of horse remains in 

 Alaska and the Yukon Territory, and 

 gives a map showing the known lo- 

 calities where the remains of fossil 

 horses have been found in this region. 

 The paper contaips tables of com- 



