“ZOOLOGY. 237 
Ridgway, of the Smithsonian Institution, who has kindly furnished 
me with the results of his examination. 
The following is a a of the bird. :— 
CENTRONYX OCHROCEPHALUS Aiken I 
p ochraceous, deepest on top, and aiad fading to Hindi on aha ‘throat; 
mi h ; h 
ochraceous maxillary one, a narrow iewi siripe bye the lower edge of the ear-cov- 
erts, and a heavy “ bridle ” on each side of t oat. 
Lower parts buffy-white, purer pos ios parc crossed by a series of heavy 
cuneate streaks of deep black, AA continu bac Haag wish along the sides, but becom- 
ing reddish on the flank. Dorsal feathers Ae tle black centres, and broadly 
. bordered, both. laterally, and rg ally, with c nce een rump and upper tail- 
wide visage similar, , the feathers with black shaft-streaks. Wings reddish-gray, the feathers 
Tail-feathers ale: skirted with pale ochre-grayish, this becoming 
pure white on ‘the quter pair of feathers on each side, the exterior of whi ch are pale 
gray centrally. 
Win ee tail, 2-40; culmen, -45; tarsus, ‘85; middle-toe, -63; lateral toes, -20 shorter; 
hind-to 
iain RI Paso County, Colorado. 
Though evidently closely related to O. Bairdii, this bird seems 
to differ specifically in quite different proportions, and also ap- 
parently, in different coloration, though the type of C. Bairdii is 
in such worn and faded plumage, that its perfect dress cannot be | 
ascertained satisfactorily. 
The differences of form and proportion between the two species 
of Centronyx are as follows :— 
C. Barron. tae vad the lateral feather as short as the middle one, and 
out ‘20 shorter than the longest; wing, 2°80; 2°10; culmen, -50; 
} sc arsus, *90; sopvetnpuae “60; hind-toe, +40; its cla 
C. OCHROCEPHALUS. Tail deeply emarginated, the la gon feather longest, and ‘20 
it than the middle; wing, 3 tail, 2.40; culmen, .45; 
8, ‘85; middle-toe, <63; hind- vir *35; its claw, ‘30. 
Of the habits of the bird, I can at present say but little; the 
single specimen obtained, was found on the dry open plains, many | 
miles from timber. Its actions appeared to resemble those of 
Coturniculus passerinus. — C. E. ArKen, Fountain, Colorado. 
Instance or SAGACITY AND Arrecrion IN A Doc.—On the after- 
noon of January 4th, Mr. F. W. Crosby of this place, while walk- 
ing along the bank of Clear Creek, observed two dogs. A black 
Newfoundland dog (male) and a small white dog (female) playing 
together on the ice in the creek. While Mr. Crosby’s attention 
was diverted for a moment the white dog disappeared from sight, 
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