1915.| | Chapman, New South American Birds. 360 
Rhynchortyx cinctus australis subsp. nov. 
Rhynchortyx cinctus (nec Salvin) Hart., Nov. Zool. IX, 1902, p. 600 (Bulin, 
Rio Bogoté, Pambilar, N. W. Ecuador); Hetum., P. Z. 8. 1911, p. 1207 (Sipi, Col.). 
Char. subsp.— Similar to R. c. cinctus but coloration throughout darker; male 
with the breast slightly darker gray, the abdominal region and, particularly, the 
flanks and under tail-coverts deeper ochraceous buff; the crown, margins to the 
feathers of the back, markings to tertials richer, more chestnut; bars on the outer 
vanes of secondaries hazel rather than ochraceous-buff; female differing from the 
female of cinctus much as does the male, the richer color of the markings of the inner 
wing-quills being especially noticeable. 
Type.— No. 117555, Am. Mus. Nat. Hist. o ad., Barbacoas, Col., Aug. 10, 1912; 
W. B. Richardson. 
Range.— Tropical Zone of western Colombia (Baudo, 2500 ft., Bagado, 1000 ft., 
Andagueda, 1000 ft., Sipi, 150 ft., Barbacoas, sea-level) and northwestern Ecuador. 
Remarks.— This form is based on six males and three females from 
western Colombia for comparison with which I have five males and a female 
from Nicaragua and a male from Panama. 
Hartert and Hellmayr (I. c.) have already shown that AR. conctus and R. 
spodiostethus are respectively the female and male of the same species, the 
former name having two years priority. 
Individual variation in color in the male appears to be largely confined 
to the rump. In true cinctus the prevailing tone is ochraceous-buff over- 
laying gray, with some darker markings and, in three specimens, a strong 
vinaceous tinge. , 
In australis our specimens show an even wider range. One has the rump 
largely gray with black and white dots; in a second it is largely ochraceous- 
buff, a third has the dominant tone of this part russet, and others are vari- 
ously intermediate. | 
Similar variations are shown in the rump of the female, in which, also, 
the breast varies greatly in intensity of color. 
These variations, however, in no way affect the differential characters 
ascribed to the race here proposed. 
Three specimens from the upper Atrato region agree with those irom 
Barbacoas. I have no topotypical (Veragua) examples but the fact that a 
male from Panama agrees with our series from N tle indicates that the 
latter are typical. 
A newly hatched chick collected by Mrs. Kerr in the Baudo Mountains 
June 20, 1912, is presumably the young of this species. The upperparts are 
uniform bright mars-brown, the forehead, throat and sides of the head some- 
what brighter, the underparts are decidedly paler. Aside from a faint 
suggestion of bars on the thighs, there are no markings. 
