142 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female.— \Nmg. 78.74; tail, 59.44-60.45 (59.94); exposed cul- 

 men, 12.70; depth of bill at base, 11.43-12.45 (11.94); width of mandible 

 at base, 9.40; tarsus, 19.05; middle toe, 13.97-14.73 (14.48).' 



San Benito Island, Lower California. 



This local insular form is much more nearly related to C. (tmjjius., of 

 Guadalupe Island, than to O. onexicanus clementh or any of the con- 

 tinental races of C. me.cican hs., but may at once ])e distinguished by 

 the different form of the bill, which, viewed from above, shows the 

 edges of the maxilla to be nearly or quite parallel for the basal half 

 (approximate 1}'), then almost abruptly contracted to the tip, and also 

 by the grayer coloration of the upper parts and paler hue of the red 

 or 3^ellow in adult males. The latter apparently never assume the 

 bright red color often seen in adult males of C. ampins. 



Carpodacus mcgregori A'STB.o'SY, Auk, xiv, Apr., 1897, 165 (San Benito 1., Lower 

 California; coll. A. W. Anthony); xv, 1898, 265 (descr. young). — American 

 Ornithologists' Union Committee, Auk, xvi, 1899, 114 (no. 520.1). 



CARPODACUS AMPLUS Ridgway. 

 GUADALUPE HOUSE FINCH. 



Similar to O. mexieajius mexicanus^ but much larger, the bill espe- 

 cially; coloration darker and lirowner above, more broadh^ streaked 

 with dusky beneath; the adult male with red (or yellow) of throat, etc., 

 extended over breast. 



AdiiU m«Z.^— Length (skins), 142.24-158.75 (151.89); wing, 80.01- 

 84.33 (81.79); tail, 62.74-66.04 (63.75); exposed culmen, 12.19-13.97 

 (12.95); depth of bill at base, 12.70-13.97 (13.21); width of mandible 

 at base, 9.91-12.19 (10.67); tarsus, 20.07-21.59 (20.57); middle toe, 

 14.99-16.26 (16.00)." 



Adidt female.— Length (skins), 147.32-158.75 (152.91); wing, 74.17- 

 81.28 (78.49); tail. 59.44-63.50 (61.47); exposed culmen, 13.21-14.22 

 (13.46); depth of bill at base, 12.95-13.72 (13.21); width of mandible at 

 base, 10.16-10.92 (10.41); tarsus, 18.80-20.83 (20.32); middle toe, 

 14.99-17.53 (15.75).-' 



Guadalupe Island, Lower California. 



Occasionally, as in C. mexicanus and its several subspecies, the usual 

 red of the adult male is replaced by dull 3'ellow (saffron or gallstone). 

 The normal red is rather duller than that of (\ mexicanus mexicanus, 

 but is equally restricted and sharply defined, except that of the under 

 surface, which extends over the chest. 



Carpodacus ampins Ridgw.w, Bull. U. S. Geol. and Geog. Surv. Terr., ii, no. 2, 

 April 1,1876, 187 (Guadalupe Island, Lower California; U.S. Nat. Mus.) ; 

 Bull. Xutt. Orn. Club, ii, 1877, 60, 61; Norn. N. Am. Birds, 1881, no. 171.— 

 American Ornithologists' Union, Check List, 1886, no. 520.— Bryant, 



^ Two specimens. ^ Thirteen specimens. ^ Five specimens. 



