( 310 ) 
in having the under tail-coverts as well as the middle of the belly pure white, 
and the whole rump grey like the upper tail-coverts ; but differ slightly by the 
darker grey of the flanks and rump, as also by the decidedly wider black area of © 
the mantle, the white nuchal band being consequently rather narrower. These 
differences are not very strongly pronounced, and may prove to be independent 
of locality. At all events, a series from Santarem should be examined before 
attempting any subdivision. 
Examples from the north bank of the Amazon (Monte Alegre, Mandos), and 
from Barcellos, on the Rio Negro, belong, however, to typical C. m. manacus (L.), 
and are exactly like others from Surinam and Cayenne, The under tail-coverts are 
grey ; the flanks darker and more extensively grey; the middle of the abdomen 
mixed with pale cinereous (instead of being pure white); the black colour of the 
mantle much more extended, the grey being nearly restricted to the upper tail- 
coverts. 
The range of C. m. purus, according to our present knowledge, is as follows : 
N.E. Brazil, Maranhio: Miritiba (Schwanda coll.; Munich Museum); Para: city 
of Para (Snethlage, Wallace, Layard), Marca da Legua (Steere), Maguary, Marajé 
(Steere), San Antonio do Prata (Hoffmanns), Ourém, on the Rio Guamé (Schulz 
coll.; Mus. H. v. B.); Amazonia: Santarem, south bank of the Amazon (Riker); 
Rio Madeira: Borba (Natterer), Calama, Jamarysinho, 8. Isabel, Rio Preto 
(Hoffmanns), Engenho do Gama and §. Vicente, on the Rio Guaporé (Natterer). 
N.B.—Peruvian specimens, which I have not seen, may also be referable to the 
present form. 
141. Schiffornis major Des Murs. 
Schiffornis major (Bonaparte MS.) Des Murs in Castelnau’s Voyage, Oiseaux, p. 66. pl. xviii. fig. 2 
(1856.—Sarayagu, Eastern Peru); Hellmayr, Nov. Zool. xiv. 1907. p. 362 (Borba ; crit.). 
Heteropelma rufum Pelzeln, Zur Orn. Bras. ii. p, 185 (1868.—Borba), 
No. 64. ¢ vix ad., Calama, 17. vi. 1907.—Wing 83} ; tail 604; bill 144 mm. 
No. 439. ¢ ad., Calama, 22. viii. 1907.—Wing 82; tail 63; bill 14 mm. 
No. 715. ¢ ad.,8. Isabel, Rio Preto, 17. x. 1907.—Wing 78; tail 59; bill 14mm. 
No. 578. ? juv., Jamarysinho, 21. ix. 1907.—Wing 82; tail 58; bill 14 mm. 
Two of the females are fully adult birds. Top of the head, nape, anterior and 
middle portions of the back uniform cinnamon-rufous ; sides of the head, throat, 
and foreneck rather paler ; the rest of the under parts still lighter, deep ochraceous. 
The male differs by its generally lighter coloration, especially by its much paler, 
bright creamy breast and abdomen. : 
The immature female has the crown mixed with brownish grey, and the mantle 
considerably duller, cinnamon-brown, corresponding to Des Murs’ S. major, while 
the rufous-headed specimens agree with the types of H. rufum of Pelzeln. 
142, Scotothorus turdinus amazonum (Sel.). 
[Muscicapa turdina Wied, Bei tr. Naturg. Bras. 3. ii. p. 817 (1831.—Bahia).] 
Heteropelma amazonum Sclater, *Proc. Zool. Soc. Lond, 1860. p. 466 (1861.—Chamicuros, Eastern 
Peru) ; Pelzeln, /.c. p. 125 (Borba). 
S. a. amazonum Hellmayr, Nov. Zoo . xiv, p. 861 (Humaytha). 
Nos. 94, 137. 3 vix ad. ? ad., Calama, 22, 30. vi. 1907.—Wing 88, 86; tail 
66, 63; bill 14, 15 mm. 
No. 755. ad., Allianca, 7. xi. 1907,—Wing 904; tail 70; bill 14 mm. 
No. 973. ¢ vix ad., Maruins, 5. vii. 1908.—Wing 91; tail 65; bill 15 mm. 
