BIRDS OF NORTH AND MIDDLE AMERICA. 



655 



KEY TO THK SUBSPECIES OF CAKYOTriHAUSTES. 



[Kiuiii), upper tail-coverts, and flanks dull gray; abdomen dull wliite; under tail- 

 coverts gray margined with dull whitish. ( Caryothraustes pollogaster. )] 

 a. Larger (wing more than 88.90, averaging 94.74; tail averaging 74.68); scapulars 

 gray, like rump. (Southern Mexico to northwestern Honduras. ) 



Caryothraustes pollogaster pollogaster (jj. 655). 

 an. Smaller (wing not more than 88.90, averaging 86.11; tail averaging 68.58); scap- 

 ulars olive-green, like back and wdngs. (Southeastern Honduras to Isthmus 

 of Panama.) Caryothraustes pollogaster scapularis (p. 656). 



CARYOTHRAUSTES POLIOGASTER POLIOGASTER (Du Bus). 

 BISHOP GROSBEAK. 



Adults {sexes alik(^. — Lores, orbits, anterior half of malar reg-ion, 

 chin, and upper throat black; rest of head, tog-ether with neck, chest, 

 and breast, yellow (lemon or g-amboge), purest on forehead and lower 

 throat, elsewhere more or less tinged with olive, especially on occiput 

 and hindneck, which incline more or less strongl}' to olive-green; upper 

 back, wings, and tail yellowish olive-green; scapulars, lower back, 

 rump, and upper tail-coverts plain slate-gray; sides and flanks light 

 gray, fading into paler gray or grayish white on abdomen; under tail- 

 coverts pale brownish g'ra}^ centrally, broadly margined with dull bulTy 

 whitish; axillars, under wing-coverts, and edges of inner webs of 

 remiges clear liglit chrome or lemon yellow; bill black, basal portion 

 bluish gray; legs and feet duskj^ (bluish gray or grayish blue in life?). 



Mult yy?«^^?.— Length (skins), 170.18-195.58 (179.58); wing, 88.90- 

 100.81: (95.00); tail, 72.90-80.01 (75.44); exposed culmen, 15.21-17.53 

 (16.51); depth of bill at base, 12.70-14.22 (13.21); tarsus, 21.84-23.88 

 (22.86); middle toe, 14.22-16.51 (15.24).^ 



Adult female.— \^Q.\\^i\\ (skins), 162.56-167.64 (165.10); wing, 88.90- 

 89.41 (89.15); tail, 66.55-71.63 (69.09); exposed culmen, 15.21-16.00 

 (15.49); tarsus, 11.94-12.95 (12.45); middle toe, 14.22-15.24(14.73).^ 



^ Eight specimens. 



''■ Two specimens. 



"Specimens from Honduras are smaller than those from Guatemala, the latter being 

 smaller than those from Mexico; but I am not able to detect any color differences. 

 Specimens from the three countries average respectively as follows: 



Locality. 



MALES. 



Four iidull males from southern Mexico 



Two adult males from Guatemala 



Two adult males from northern Honduras (Santa 

 Ana) 



FEMALES. 



One adult female from southern Mexico 



One adult female from northern Honduras (Santa 

 Ana ) 



Wing. 



99.57 

 92. 96 



Tail. 



77.72 

 73.66 



72. 90 



71.63 

 66. 55 



Ex- 

 posed 

 culmen. 



17.02 

 16.26 



15. 49 



15.24 

 16.00 



Depth 

 of bill 

 at base. 



13. 46 

 12.95 



12. 70 



11.94 

 12. 95 



23.11 

 22. 35 



22.10 



23.37 

 22. 10 



Middle 

 toe. 



15. 75 

 14.99 



14.22 



15.24 

 14.22 



