Paraguay, Bolivia, and Southern Brazil. 
321 
147. Chrysoptilus cristatus. 
Chrysoptilus melanochlorus Hargitt, Cat. B. xviii. p. 110. 
Chrysoptilus cristatus Chubb, Ibis, 1910, p. 279 (Paraguay), 
a. $ ad. Alto Paraguay, Bolivia. Sept. 28, 1909. 
This specimen agrees with C. cristatus in not having the 
black behind the red malar stripe ; but is not quite so 
bright “ yellowish olive ” as the skin in the Museum 
collection; it is, however, much worn and faded. 
148. Chrysoptilus melanol^mus. 
Chrysoptilus cristatus Arg. Orn. ii. p. 21 ; Hargitt, Cat. B. 
xviii. p. 112. 
a, b. <$ $ ad. Los Ynglases, Ajo. Sept. 12, 1908. 
c, d. £ $ ad. ,, „ Feb. 25, 1909. 
e. ? . „ ,, Apr. 3, 1909. 
/, g, h. $ ad. & young. Los Ynglases, Ajo. Dec. 11-29, 
1909. 
i. $ ad. Goya, N. Argentine. Nov. 13, 1909. 
$. Irides dark plum-coloured; bill black ; legs and toes 
olive-green. 
? . Irides brown ; bill blackish ; legs and toes ash- 
coloured. 
This common species seems slightly variable, some 
examples being considerably brighter than others, while 
some have less and others more markings below. 
It spends as much time on the ground as in the trees and 
is often seen in the open camp a considerable distance from 
any woods. The nesting-hole is sometimes in a post, more 
often in a tree ; I did not succeed in securing the eggs, but 
there are eleven in Miss Bunnacles^ collection taken at 
Ajo between October 10th and November 8th, 1909. 
149. Chrysoptilus nigroviridis, sp. nov. 
a. ? ad. Mortero, Paraguay. Aug. 13, 1909. 
Irides brown ; bill blackish horn-coloured; legs and toes 
ash-coloured. 
Size rather larger than either C. melanolcemus or C. 
cristatus ; above yellowish olive, not so bright as in C. cris¬ 
tatus ; rump as in C. cristatus, but paler ; a strong indication 
