( 378 j 
[284. Ghaetura cinereiventris sclateri Pelz. 
(Chaetura cinereiventris Sclater, Cat. Coll. Amer. Birds p. 233 (1862.—ex Wied and Burmeister : 
Bahia).] 
C. Sclateri Pelzeln, Zur Orn. Bras, i. pp. 16, 56 (1867.—Borba). 
Borba (Natterer). Widely distributed in Upper Amazonia, but not recorded 
from any locality east of the Madeira Valley. Ch my account in Verhandl. 
Ornith, Ges. Bayern viii. 1908. p. 157. ] 
(285. Chaetura spinicauda spinicauda (Temm ). 
Cypselus spinicaudus Temminck, Tabl. méth. Pl. col. p. 57 (1839.—ased on D’Aubenton, Pl. enl., 
726. fig. 1; Cayenne). 
Chaetura cinereiventris (nec Sclater) Pelzeln, /.c. p. 16 (part. : Borba, Para), 
Right bank: Borba (Natterer). 
This species is chiefly found in the Guianas, but in Eastern Brazil it ranges 
as far south as Bahia. Cf. Hellmayr, Verhandl. Ornith. Gesellsch. Bayern viii. 
1908. pp. 158-60.] 
[286. Claudia squamata (Cass.). 
Cypselus squamatus Cassin, Proc, Acad. N. Sci. Philad, vi. p. 369 (1853.—British Guiana) ; Pelzeln, 
l.c. p. 16 (Borba), 
Right bank: Borba (Natterer).] 
287. Chordeiles rupestris (Spix). 
Caprimulgus rupestris Spix, Av. Bras, ii. p. 2. pl. ii, (1825.—“in insulis petrosis fl. Nigri”); Pelzeln, 
Le. p. 14 (Rio Guaporé, das Pedras, Rio Mamoré, etc.), 
Nos. 544, 598, —. 33 ad, Jamarysinho, 26, 27, ix. 1907.—Wing 160—172 ; 
tail 88—99 ; bill 7—8 mm. 
Nos. 595, 596, 599. 2 9 ad., Jamarysinho, 26, 27, ix. 1907.—Wing 155—166 ; 
tail 87, 89, 100; bill 7—7} mm. 
“Tris brown, feet and bill black.” : 
The males agree perfectly with the typical examples in the Munich Museum. 
The females differ in the decidedly more rafescent buff ground-colour of the upper 
parts, and by having the white portion of the outer rectrices more or less blotched 
and banded with black. Peruvian skins are somewhat darker above, but the 
difference is insignificant. 
According to the observations of Mr. Hoffmanns, these birds breed in large 
numbers on the sandy beach of the river (“ Pleya”). Two clutches consisting each 
of two eggs were taken on September 27, 1907. They are thickly marbled and 
spotted with pale brown and lavender-grey on a pale buff or greyish white ground, 
and measure 26 x 20, 27 x 20, 28 x 193mm. The egg is well figured in Cat. 
Fags Brit. Mus. iii, pl. i. fig. 5. 
“88. Nyctiprogne leucopyga (Spix). 
Caprimulgus leucopygus Spix, Av. Bras. ii. p. 3. pl. iii. fig. 2 (1825.—“ ad litora sylvestria fl. 
Amazonum ”), 
Lurocalis leucopyga Pelzeln, /,c. p. 14 (Cidade de Mattogrosso). 
No. 113. 3 ad., Calama, 26. vi. 1907. “Tris dark brown, feet dusky grey, bill 
black.” —Wing 135; tail 95 ; bill 5 mm. 
A perfectly adult male with the upper parts nearly uniform blackish, the 
