824 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
from Medicine Hat, Assiniboia, also })elono^ to this rac'(>. Many of 
the winter birds from Texas and New Mexico are intermediates 
between leucolcBina and occidentalism thoug-h occurring with them are 
typical exam])les of ])oth these forms. The winter range of leuco- 
Imiiui includes also northern Mexico, though the birds found there 
seem to have come from an area of tranrsition from leucolmma to 
leuGcmHipt'ihi. 
The e3'ebrow is frequentl^y, the throat occasionally, without a 
trace of yellow, but both are sometimes deeply yellow; this color 
also appearing, though rarely, below the black jugular area, as is 
the case in a few autunuial specimens from southern Montana. Some 
winter birds have heavy dusky spotting on the breast, while others 
lack it almost entirely. In worn plumage the back not infrc(}iiently 
is conspicuously blackish, owdng to the abrasion of the pale tips of 
the feathers. In this condition specimens may be distinguished from 
ineri'iJIi by the lighter color of the other portions of the upper sur- 
face. A dilierence among specimens of lencoUvnia. which is purely 
individual, consists in the occasional reddening of the upper surface, 
most conspicuously on the nape, rniup and bend of the wing to such a 
degree that the ditference between this phase and the normal one is 
greater than that existing between some of the different races, thus 
forcibly demonstrating the desirability, and sometimes even necessit}^, 
of a series of specimens for the determination of Ot<>cori>^ixo\w any given 
locality. Then, too, the range of leiicoliPina is so extensive and covers 
areas of so great physiographic diversity that intermediates ])etween 
it and the various races with which it intergrades, though still unques- 
tionably to be referred to it, are often far more different f i-om each 
other than are the examples of some of the recognizable forms, par- 
ticularly those occupying contiguous areas. This race, more than any 
other, has also a tendency to develop various slight exceedingly local 
differences which seem entirely independent of subspecitic i elationship 
or intergradation. 
Specimens to the number of 5()0 have been examined, these repre- 
senting the localities given below, breeding birds l)eing designatedi by 
an asterisk: 
Arhona. — San Francisco Mountain; White Mountains; Wilcox; 
Fort Verde. 
California. — White Mountains;* McGill Peak; Stockton; Keeler. 
Colmmdo. — Loveland;* Clear Creek;* Cortez; Burlington; Den- 
ver;* Arlington; Fort Logan; Colorado Springs;* Ramah (El Paso 
County);* Aiken's Ranch (El Paso County); Turkey Creek (El Paso 
County); Pueblo; Fort Garland;* Routt County; Eagle County; 
Mount Rose;* Summitville.* 
/r/(r/w>.— Blackfoot;* Montpelier;* Big Butte;* Birch Creek.* 
Kansas. — Pendennis;* Garden City; Winona; Ellsw^orth;* Riley.* 
