424 



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



A specimen from the Copper Mines (6404) differs in having the feathers of the back olive 

 green, tipped occasionally with black. Instead of the one or two spots of white on the tips of 

 the greater wing coverts there is a continuous band. The axillaries are olive green, instead of 

 black. None of these differences, however, are inconsistent with a not quite mature specimen 

 of the C mexicanics. 



List of specimens. 



CHRYSOMITRIS LAWRENCU, Bo nap. 



Carduelis lawrencn, Cassin, Pr. A. N. Sc. V, Oct. 1850, 105 ; pi. v, (California.) 

 Chrysomitris lawrencii, Bon. Comptes Rendus, Dee. 1853, 913. 



Sp. Ch. — Hood, sides of head anterior to tlie middle of tlie eye, cliin, and upper part of throat, black. Sides of head, neck, 

 and body, upper part of neck and the back, and upper tail coverts, ash color. Rump and lesser wing coverts yellowish green. 

 Throat below the black, breast, and outer edges of all the quills, (except the first primary, and passing into white behind,) 

 bright greenish yellow. Wings black. Tail feathers black, with a white square patch on the inner web, near the end ; outer 

 edges grayish ; quills black. Female similar, with the black of the head replaced by ash. Length, about 4.70 ; wing, 2.75 ; 

 tail, 2.30. 



Hub. — Coast of California. 



In this species the second quill is longest; the first intermediate between the third and fourth. 

 The tail is quite deeply forked. There is a slight tendency to olive green in the middle of the 

 back. The yellowish green may be said to cover the whole wing coverts, although the black 

 bases of the greater coverts are somewhat exposed ; the green on these passes into yellowish ; 

 their extreme tips grayish. The axillaries and under wing coverts are white. 



The young bird is like the female, with obscure blotches beneath ; the yellow margins of the 

 wing coverts and secondaries brownish. 



List of specimens. 



