Recently published Ornithological Works. 659 



(Urinatoridea) , each of which contains but one Family of 

 existing birds. But the author agrees with Fiirbringer in 

 closely associating the former with the extinct Enaliornithidse 

 and Hesperornithidas. The osteological characters which 

 separate the two existing Families are very clearly shown. 



We agree with Dr. Shufeldt that American Ornithologists 

 have made a " great disturbance of nomenclature " in trans- 

 ferring the name Colymbus from the Loons to the Grebes ; 

 moreover, we consider that this change, like many others 

 recently proposed, is quite unjustifiable. 



105. Stvarth on the Birds of Arizona. 



[Pacific Coast Avifauna. Xo. 4. Birds of the Huacucha Mountains, 

 Arizona. By Harry S. Swarth. Los Angeles, 1904. Published by the 

 Cooper Ornithological Club.] 



This is the fourth of a series of articles upon the birds of 

 the Pacific coast published by the " Cooper Ornithological 

 Club/' the monthly official organ of which is ' The Condor/ 

 now in its sixth year. 



The Huacucha Mountains, to an account of the birds of 

 which the present number of the ' Pacific Avifauna ' is 

 devoted, lie in the south-eastern corner of Arizona, stretching- 

 north-east and south-west, their southern extremity lying 

 just over the Mexican Boundary. The range is small in 

 extent, about forty miles only in length, but rises in one 

 place to an altitude of 10,000 feet. It is well watered and 

 well wooded, in the higher parts with conifers and Avith 

 many other sorts of trees along the canyons, and appears to 

 be an attractive district for " camping out/' as the author of 

 this article has ascertained by personal experience. His 

 paper contains well-written field-notes on some 200 species, 

 among which are such interesting birds as Buteo abbreviatus , 

 Falco mexicanus, Dryobates arizonce, Aeronautes rnelanoleucus, 

 Phainopepla nitens, and Cardellina rubrifrons. Ten different 

 species of Trochilidse are recorded as occurring within the 

 limits of the district. 



