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U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



As stated under the head of E. traillii, E. minimus differs from it in its smaller size, and more 

 ashy tinge on the sides of the head, the najie, and rump. The tail feathers are narrower, more 

 rounded at the end, and less acuminate. The tarsi are one-tenth of an inch longer, though 

 the bird is considerably smaller ; the claws also are larger. The second, third, and fourth 

 quills are generally nearly equal, the latter always considerably exceeding the first, as does the 

 fifth also ; in trailli the fifth is usually nearly the length of the first, or but slightly different 

 from it. 



One of the most appreciable differences between the two species lies in the two bands of the 

 wing. These, with the other edgings of the wings in minimus, are dirty grayish white ; in 

 traillii they are strongly tinged with grayish olive. Both have the outer primary edged with 

 yellowish white, and the first tail feather with its outer web paler brownish than elsewhere, 

 but not approaching to white. 



List of specimens. 



