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 worked 
up of late years by our American brethren. 
63. Lieut. Wheeler’s Reports upon Surveys west of the 100 th 
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 JJ 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>D Henshawq who 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 Dendroeca 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 Dendroeca. The quarto work 
is illustrated by fifteen chromolithographs from Mr. Ridg- 
wav’s pencil. Though the ornithological portion of these 
volumes alone demands the present notice, it by no means 
