Birds of Paraguay. 601 
164. SCOTOTHORUS UNICOLOR. 
Muscicapa virescens Wied (nec. Temm.) Beitr. Naturg. 
Bras. iii. p. 802 (1831 : Bahia). 
Heteropelma virescens (nec Temm.) Sclater, Cat. B. Brit. 
Mus. xiv. p. 321. 
Scotothorus unicolor (Bonap.), Hellmayr, Wytsman, Gen. 
Av. Part 9, p. 27, pi. i. fig. 7 (1910). 
a, b. $ $ ad. Sapucay, June 20, 30, 1904. 
c, d. $ ad. „ July 9, 18, 1904. 
e,f } g. h. $ ad. Sapucay, August 6-29, 1904. 
i . B ad. Sapucay, September 2, 1904. 
The only difference that I observe in this series is in the 
colour of the under tail-coverts, which varies from olive-green 
to rust-brown; but there are scarcely two specimens with 
the same shade of colour, so that this cannot be regarded as a 
character. The measurements are the same as of others in 
the National Collecfion from S.E. Brazil. 
The species is new to the avifauna of Paraguay. 
[This bird is resident but not common, inhabiting the 
large forests only.— W. F.~] 
Family Cotingid^e. 
165. Tityra brasiliensis. 
Caracterizado bianco cabos negros Azara, Apunt. ii. 
p. 176. no. ccvii. (1805). 
Psaris brasiliensis Swains. Anim. Menag. p. 286 (1837 : 
Northern Brazil). 
Tityra brasiliensis Berlepsch, J. f. O. 1887, pp. 13, 118 
(Lambare) ; Sclater, Cat. B. Brit. Mus. xiv. p.329; Ihering, 
Bevista Mus. Paulista, vi. p. 327 (Paraguay) ; Hellmayr, 
Abhandl. Akad. Wiss. Miinchen, xxii. p. 667 (Paraguay). 
a, b. B $ a <k Sapucay, November 17, 1902. Iris light 
brown. 
c, d. B $ a d* Sapucay, March 1904. 
k, l. $ ad. Sapucay, April 1903-04. 
Bill black above, pale slate-coloured below; naked skin 
round eyes and base of bill purplish red; tarsi and feet pale 
slate-coloured ; iris brown. 
