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227. Sclateria schistacea humaythae Hellm. 
Sclateria schistacea humaythae Hellmayr, Bull. B. O. C. xix, p. 51 (1907.—Humaytha) ; Hellmayr, 
Nov. Zool. xiv. 1907. p. 375 (Humaytha, Paraiso). 
No. 1020. 3 ad., Marnins, Rio Machados, 15. vii. 1908.—Wing 68; tail 54; 
bill 19 mm. 
No. 745. ¢ ad., Allianca, 5. xi. 1907.—Wing 70 ; tail 57; bill 19 mm. 
No. 791. $ ad., Allianca, 17. xi. 1907.—Wing 68; tail 53; bill 20 mm. 
Perfectly identical with the Humaytha series. The male from Allianca, in the 
length of tail, approaches S. s. leucostigma. 
S. s. humaythae inhabits both banks of the river. On his first journey in 1906 
Mr. Hoffmanns obtained a large suite at Humaytha, and a single female on the 
opposite side, near Paraiso. 
228. Myrmelastes luctuosus luctuosus (Licht.). 
Lanius luctuosus Lichtenstein, Verz. Dubl. Berliner Mus, p. 47 (1823.-—“ Pard i 
Thamnophilus luctuosus Pelzeln, l.c. p. 76 (Borba). 
Myrmelastes luctuosus Hellmayr, Nov. Zool, xiv. p. 372 (Humaytha), 
Nos. 387, 523. ¢? ad., Calama, 12. viii, 7. ix. 1907—Wing 76, 78; tail 
64, 66; bill 20, 22 mm. 
Nos. 530, 561. ?¢ ad., Jamarysinho, 9, 17. ix. 1907—Wing 79—80; tail 
68—70; bill 21 mm. 
“Tris brown, feet plumbeous or blackish, bill black.” 
Identical with examples from the Tapajéz. The original locality requires 
confirmation, for in recent years the bird has not been found near the town of 
Para, 
229. Hypocnemis cantator peruvianus Tacz. 
[Formicarius Cantatar (sic!) Boddaert, Tabl. Pl. enl. p. 44 (1783.—based on “Le Carrilloneur, de 
Cayenne,” D’Aubenton, PI. enl. 700. fig. 2: Cayenne).] 
Hypocnemis cantator, peruvianus Taczanowski, Orn, Pérou ii, p. 61 (1884.—Yurimaguas, North 
Peru) ; Hellmayr, Nov. Zool. xiv, 1907. p. 377 (Humaytha). 
H. cantator (not of Boddaert) Pelzeln, /.c. p. 87 (part.: Villa Maria, Engenho do Gama, Matto- 
grosso ; Borba, Rio Madeira), 
Nos. 262, 280, 369. dd ad., ¢ imm., Calama, 24, 27. vii, 11. viii. 1907. 
“Tris brown, feet plumbeons, bill black, lower mandible greyish.”—Wing 544—55 ; 
tail 38—42 ; bill 144—15 mm. 
Nos. 222, 261. 9%, Calama, 14, 24. vii. 1907.—Wing 53, 54; tail 37, 40; 
bill 143, 15 mm. 
No. 982. ¢ perad., Maruins, Rio Machados, 8. vii. 1908.—Wing 564; tail 
403; bill 144 mm. 
No. 983. ? ad., Maruins, 8. vii. 1908.—Wing 55; tail 39 ; bill 143 mm. 
In the coloration of the upper parts—viz. large white dorsal patch, inter- 
scapulars coarsely spotted with black and distinctly edged with white—the adult 
males agree perfectly with a very large series from North-Eastern Pern, Teffé, 
Mattogrosso, and Itaittiba (R. Tapajéz). As a rule, specimens from Mattogrosso, 
Calama, Maruins, Rio Jurud, and East Bolivia (Yuracarés: D’Orbigny coll.) have 
the flanks paler ochraceous, but several skins from Pebas (Pern) and Teffé are not 
different in this respect, 23 
