492 SYSTEMATIC SYNOPSIS. — PICARIA — PICIFORMES. 
Analysis of Species. 
Red moustaches in g'; no red on nape in f ?; wings and tail orange-red underneath; cap lilac-brown; 
throat ashy ; no yellow on belly ; back umber-brown (Western) . . . - “ 2 mexicanus 459 
(Mixed in every degree with) 
Black moustaches in ¢ ; red nuchal crescent in g'; wings and tail golden-yellow underneath; cap ashy; 
throat lilac-brown; yellow on belly; back olive-brown (Eastern). . . . . Quratus 457 
(Not mixed with) 
Red moustaches in ¢'; no red on nape in #9 ; wings and tail golden-yellow underneath; cap lilac-brown; 
throat ashy; yellow on belly; back umber-brown (Southwestern) . °C a pea chrysoides 458 
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Fig. 345. — Golden-winged Woodpecker, } nat. size. (From Brehm.) 
Oss. It will be noted, how curiously these species are distinguished mainly by a different 
combination of common characters. — Colaptes ayresi Aup., C. hybridus Barry, C. aurato- 
mexicanus SUNDEVALL, isa form from the Missouri and Rocky Mt. regions in which the charac- 
ters of mexicanus and auratus are blended in every conceivable degree in different specimens. 
Perhaps it is a hybrid, and perhaps it is a transitional form, and doubtless there are no such 
things as species in Nature. Eastern specimens of auratus sometimes show red touches in the 
black maxillary patch, as is frequently the case with Kansas examples. In the West, you 
