TETRA ONIDAi— TETRAONINZ: GROUSE. 583 
overlap to some extent. Formerly ranged in all the prairie of Minnesota, Michigan, and Iowa, 
but is pushed westward by the grain-fields— the same carrying cupido along. Eggs 5-10-12- 
18, in June; grayish-olive or drab-colored, uniformly dotted with brown points, rarely larger 
than a pin-head; always quite different from those of cupido ; 1.60 to 1.80 long by 1.20 to 1.30 
broad; average 1.75 1.25. A fine game and table bird, in all respects like cupido. 
207. CUPIDONIA. (Name derived from cupido, which see below.) Prn-neck Grouse. . Neck 
with a peculiar tuft on each side of loose, lengthened, acuminate feathers, like little wings, 
beneath which is 
a circular patch of 
bare, yellow skin, 
capable of great, 2 
distension,likethe - 
half of a small or- 
ange. Head with 
a slight soft crest. 
Tarsi scant-feath- 
ered to the toes in 
front and on sides, ; 
bare on a strip behind; toes extensively webbed at base. Tail short, rounded, of 18 broad 
stiffish feathers, with obtusely rounded ends. Sexes nearly alike in size, form, and color; 
plumage below barred transversely. One species, 2 varieties, of prairie, perfectly terrestrial. 
Fi. 399. — Foot of Prairie Hen, nat. size. (Ad nat. del. E. C.) 
Analysis of Varieties. 
THE COMMON BIRD. Tarsal feathers hiding the bare strip. Dark bars above black, and broad; top of 
head mostly blackish io tty Mae 35 ee a ane ee ee ee ee - eupido Se. 
TEXAS BIRD. Tarsi very scant-feathered, the bare strip exposed. Dark bars above brown and narrow ; 
top of head little blackish , e4o% pallidicinctus 564 
563. C. cupi/do. (The tufts on the neck likened to conventional ‘‘cupid’s wings.” Figs. 399, 400.) 
PINNATED GROUSE. 
Prairie Hen. ¢ 9: 
Above,variegated with 
black, brown, tawny, 
or ochrey, and white, 
the latter especially 
on the wings; below, 
pretty regularly barred 
with dark brown, 
white,, and tawny; 
throat tawny, a little 
speckled, or not; vent 
and crissum mostly 
white; quills fuscous. 
with white spots on 
the outer webs; tail 
fuscous, with narrow 
or imperfect white or 
tawny bars and tips; 
sexes alike in color, 
but 9 smaller, with shorter neck tufts. Length 16.00-18.00; extent about 28.00; wing 
8.00-9.00 ; tail about 4.50; tarsus rather over, middle toe and claw rather under, 2.00; neck- 
tufis 2.00-3.50 inches long. This well-known bird formerly ranged across the United States, 
