346 Birds of Colorado 
This subspecies has been recently eliminated from the Checklist 
(‘* Auk,” XX., p. 347) as ‘‘ The characters ascribed to it are mainly due 
to age or season.”’ It seems to me, however, that the form is undoubtedly 
an intermediate between A. psaliria and A. mexicanus, and, as 
was originally pointed out by Coues, as such it is a convenience to 
retain it. 
Mexican Goldfinch. Astragalus psaliria mexicanus. 
A.O.U. Checklist no 530b—Colorado Records—Cooke 97, p. 213; 
99, p. 187; Bergtold 09, p. 79. 
Description.—Closely resembling A. psaliria in size and markings, 
but the whole of the upper-parts, including the ear-coverts glossy black. 
Females and young birds not to be ‘distinguished from those of 
A. psaltria and A. p. arizone. 
Distribution.—_Mexico and southern Texas, accidental in Colorado. 
In Colorado an example, taken by T. A. Allen, near Denver, was 
identified by J. A. Allen. Another, not quite typical, with slight 
traces of olive-green on the back, obtained by Aiken near Colorado 
Springs, 4th August, 1898, is in his collection, while Cooke believed 
that he saw examples near Trinidad in June, 1898. Quite recently 
Bergtold noticed a typical example of this form in a vacant lot in 
Denver, and watched it for some time on June 30th, 1908, and Frey has 
taken a male at Salida, August 3rd, now in Mr. Warren’s collection. 
Genus SPINUS. 
Small Finches—wing under 3-0—closely resembling Astragalinus, 
but with a slightly longer and more actutely pointed bill, with concave 
sides when seen from above; wing, tail and feet as in Astragalinus ; 
plumage (in the Colorado species) streaked with yellow at the base of 
the tail- and wing-feathers. 
The Siskins form a considerable genus, ranging over the greater 
part of the Old and New Worlds; only one species is found in the 
United States. 
Pine Siskin. Spinus pinus. 
A.O.U. Checklist no 533—Colorado Records—Allen 72, pp. 149, 162 ; 
Aiken 72, p. 199; Trippe 74, p. 116; Henshaw 75, p. 246; Scott 79, 
p- 93; Tresz 81, p. 40; Drew 81, p. 90; 85, p. 16; Allen & Brewster 
83, p. 161; Beckham 85, p. 141; 87, p. 124; Morrison 90, p. 36; 
H. G. Smith 93, p. 244; Lowe 94, p. 269; Cooke 97, pp. 99, 213; 
Dille 00, p. 73; Keyser 02, p. 199; Dille 03, p. 74; Henderson 03, 
p. 108; 09, p. 236; Gilman 07, p. 156; Warren 08, p. 23; 09, p. 16; 
Rockwell 08, p. 171. 
