( 364 ) 
F. q. quixensis (Cornalia), from Eastern Ecuador, has the white apical spots 
on the greater wing-coverts nearly as large as /’. g. consobrina, but the white ends 
of the outer rectrices are rather longer, and the dimensions greater. The female, 
moreover, differs at a glance from those of F. bicolor, microsticta, and consobrina 
by having the throat and sides of the head, like the pileum and back, black 
with a slight gloss, while, in its allies, the throat is ferruginous or chestnut-rufous 
like the rest of the belly, the sides and top of the head are slate-grey, ete. 
All the black-and-white Formicivorae represent each other geographically, and 
are therefore more properly designated by trinomials. 
247. Myrmeciza hemimelaena pallens Berl. & Hellm. 
[Myrmeciza hemimelaena Sclater, Proc, Zool, Soc. Lond. xxv, 1857. p. 48 (1857.—Bolivia).] 
Formicivora ruficauda (nec Myiothera ruficauda Wied, 1831) Pelzeln, Zur Orn, Bras, ii. p. 155 
(1868.—Engenho do Gama, Villa Bella de Matogrosso, Western Matogrosso) ; Hellmayr, 
__ Verhandl. Zool.-Bot. Gesellsch. Wien liii. 1903. p. 213. 
Myrmeciza hemimelaena pallens Berlepsch & Hellmayr, Journ. f. Ornith. 1905. p. 32 (January 1905.— 
Matogrosso). ; 
Drymophila jurwana Thering, Revist. Mus. Paulist, vi. 1904, p. 442 (May 1905.—Rio Juru4: new 
name for Ff’, ruficauda Pelz. preoccupied). 
Nos. 247, 311, 319. dd ad., d imm., Calama, 22, 31. vii., 1. viii. 1907.—Wing 
56—57 ; tail 38; bill 15 mm. 
No. 555. d ad., Jamarysinho, 15, ix. 1907.—Wing 56; tail 34; bill 14 mm. 
Nos. 970, 1022. dod ad., Maruins, 4, 16. vii. 1908—Wing 57—58; tail 34—36; 
bill 144.—15 mm. 
Nos. 263, 316. ?? ad., Calama, 24. vii., 1. viii, 1907—Wing 53, 54; tail 
37, 39; bill 144 mm. 
No. 567. $ imm., Jamarysinho, 18. ix. 1907.—Wing 54 ; tail 354; bill 14 mm. 
No. 980. ? ad., Maruins, 9. viii, 1908.—Wing 55; tail 35; bill 14 mm. 
“Tris brown, feet flesh-colour, light yellow or greyish yellow, bill black.” 
The. males. differ from a series of M. h. hemimelaena from Bolivia and South- 
Eastern Peru. by their paler, cinnamomeous instead of castaneous, colour of the 
back and wings, clearer cinnamon-rufous tail, and much lighter, fulvescent, not 
deep rufescent brown, flanks. Besides, the black is restricted to the throat and 
foreneck (while, in the typical race, it is continued over the chest), and the white 
area on the breast and middle of abdomen much more extended. The other 
character alluded to by Berlepsh & Hellmayr, viz. the colour of the pileum and 
nape, however, does not seem to be quite constant, for one or two specimens from 
the Rio Madeira are not different on this score from typical MZ h. hemimelaena 
from Bolivia. 
The females are always readily distinguishable from those of the latter form 
by having the throat and foreneck very much paler, ochraceous instead of 
ferruginous, the middle of the belly nearly white instead of ochraceous buff, and 
all the upper parts much lighter-coloured. 
-The range of the two forms is as follows :— 
(a) M. hemimelaena hemimelaena Scl. 
North Bolivia: San Mateo, Yungas of Cochabamba (G. Garlepp—Mus. 
H. v. B.), Yuracarés (D’Orbigny *). South-Hastern Peru: Marcapata, Cuzco (0. 
by Thamnophilus guttatus (errore!) D’Orbigny, Voyage, Oiseaua p. 177,—I have examined D’Orbigny’s 
be gr example, an adult male, in the Paris Museum, and found it identical with others from 
-E. Peru. 
