( 363 ) 
244. Formicivora grisea grisea (Bodd.). 
Turdus grieseus (sic) Boddaert, Tabl. Pl. enl. p. 39 (1783.—ex D’Aubenton, PI. enl, 643, fig. 1 =: 
Cayenne), 
Formicivora grisea Pelzeln, l.c. p. 83 (Engenho do Gama, [Villa Bella de] Matogrosso, Rio 
Guaporé ; Borba, Rio Madeira). 
Nos. 600, 602, 719. dd ad, d imm., 8. Isabel, Rio Preto, 1, 19. x. 1907,— 
Wing 55—56 ; tail 47—49 ; bill 183—15 mm. 
Nos. 616, 618, 619, 637. ?¢, S. Isabel, 4, 7. x. 1907—Wing 54—55; tail 
47—-49 ; bill 13—14 mm. 
“Tris brown, feet plumbeons or grey, bill black.” 
Identical with specimens from Cayenne, British Guiana, Para, and Maranhao. 
The Rio Madeira appears to form the western limits of its range south of the 
Amazons ; the most southerly localities in Amazonia as yet known are Engenho 
do Gama and Sao Vicente, on the Guaporé, where Natterer obtained a large suite. 
I hope to discuss the various geographical races of the grisea group in another 
paper shortly to appear. 
[245. Formicivora rufa (Wied). 
Cf. Nov. Zool. xiv. 1907. p. 372 (Humaytha), 
Left bank of the Madeira: Humaytha (Hoffmanns). 
Widely distributed in Central South America, ranging to the north as far as 
Santarem, and eastward to Bahia. | 
246. Formicivora quixensis bicolor Pelz. 
[Thamnophilus quizensis Cornalia, Vertebr. Syn. Osculati Coll. p. 12 (1849.—Quixos, Eastern 
Ecuador). } 
Formicivora bicolor Pelzeln, Zur Orn. Bras. ii. pp. 84, 156 (1868,—Engenho do Gama, Rio Guaporé : 
Destacamento do Ribeirao, Salto do Girao, Borba, Rio Madeira) ; Hellmayr, Nov. Zool, xiv. 
1907. p. 373 (Borba). 
Nos. 44, 91, 484, 744. dd ad., Calama, 15, 22. vi., 29. viii, 1. xi. 1907. “Iris 
dark brown, feet and bill black.” —Wing 543—56 ; tail 50—53; bill 14 mm. 
F. q. bicolor has lately been met with in various localities south of the main 
valley of the Amazons. Mr. Hoffmanns obtained it at Teffé (Rio Solimoéns), near 
Itaituba, left bank of the Rio Tapajéz, as well as at Borba. Prof. Ihering received 
specimens from the Rio Jurud,* and Miss Snethlage records it from Bom Lugar, 
Purts.ft 
The newly described F. consobrina microsticta Berl., ¢ from Cayenne, is also 
much more nearly related to F. bicolor than to F. consobrina, differing only in its 
stouter, broader bill and slightly shorter white tips to the outer rectrices. The 
pattern of the wing-coverts is exactly the same in both forms. F. consobrina, from 
Western Ecuador and Western Colombia, on the other hand, has much less white 
in the tail, the white tips being only about half as long, and the white _ - 
the greater upper wing-coverts are much larger, as correctly pointed out by | oun 
Berlepsch. I have examined, in addition to the typical series of F. ee = 
Tring, two adult males secured at Saint-Jean-du-Maroni by M. Le Moult, in the 
collection of the Munich Museum. 
5 a : eae 
Tt S sdix tan, Bee. i Wee 1908. p. 16—F. consobrina (!) eadem, lc. p. 24; sprain 
Mus. Goeldi v. 1908. p. 57.—1 have examined the examples, which are, of course, referable to /. . 
F. consobrina is confined to Western Ecuador and W. Colombia. 
t Nov. Zool. xv. 1908. p. 157 (Rio Approuague, Cayenne). 
