Recently published Ornithological Works. 485 



The species mentioned are not numerous^ nor are there any 

 amongst them calling for special comment ; but the list helps 

 to swell the knowledge of the distribution of North- American 

 birds^ a subject which has been been so thoroughly Avorked 

 up of late years by our American brethren. 



63. Lieut. Wheeler's Reports upon Surveijs ivest of the lOOth 

 Meridian. 



[Report upon Geographical and Geological Explorations and Surveys 

 West of the One Hundredth Meridian, in charge of First Lieut. George 

 M. Wheeler, Corps of Engineers, U.S. Army. Vol. v. Zoology. 4to. 

 Washington: 1875. And 



Annual Report upon the Geographical Surveys West of the One Hun- 

 dredth Meridian, in California, Nevada, Utah, Colorado, Wyoming, New 

 Mexico, Arizona, and Montana, by George M. Wheeler, First Lieut, of 

 Engineers, U.S. Army ; being Appendix J J of the Annual Report of the 

 Chief Engineers for 1876. 8vo. Washington : 1876.] 



In the first of these volumes the ornithological results of 

 Lieut. Wheeler's Survey are incorporated up to the end of 

 the collecting-season of 1874. The second treats of the ob- 

 servations and collections made during 1875. Both are by 

 Mr. W. H. Henshaw, Avho has proved himself to be an accurate 

 observer as well as a diligent collector. One of the results 

 of the exploration of the southern districts of the United 

 States bordering upon Mexico has been the discovery that 

 several species, hitherto only known as inhabitants of the 

 Mexican highlands, have a much more extensive northern 

 range. Mr. Henshaw's labours have demonstrated this ; and 

 his notes on these and other better-known species form the 

 most important part of the volumes before us. Amongst the 

 newly annexed birds is Dendrceca olivacea, originally described 

 as a Texan species by the late Mr. Giraud, but lately believed 

 to be solely of more southern origin, being common in the high- 

 lands of Mexico and Guatemala. For this bird a new generic 

 name, Peucedramus, is proposed by Dr. Coues, as it differs 

 in some respects from typical Dendrcecce. The quarto work 

 is illustrated by fifteen chromolithographs from Mr. Ridg- 

 way's pencil. Though the ornithological portion of these 

 volumes alone demands the present notice, it by no means 



