( 363 ) 

 244. Formicivora grisea grisea (Bodd.). 



Turdus (jriesfus (sic) Boddaert, Tahl. PL enl. p. 39 (1783.— ex D'Aubenton, PI. enl. 643. fig. 1 = (^ : 



Cayenne). 

 Formkicora grisea Pelzeln, l.r. p. 83 (Engenho do Gama, [Villa Bella de] Matogrosso, Rio 



Guapor^ ; Borba, Rio Madeira). 



Nos. 600, 602, 719. c?(? ad., 6 iium., S. Isabel, Rio Preto, 1, 19. x. 1907.— 

 Wing 55-56 ; tail 47—49 ; bill 13i— 15 mm. 



Nos. 616, 618, 619, 637. ? ?,'s. Isabel, 4, 7. x. 1907.— Wiug 54—55; tail 

 47—49; bill 13—14 mm. 



" Iris brown, feet plumbeous or gre}-, bill black." 



Identical with specimens from Ca3-enrie, British Guiana, Para, and Blaranhao. 

 The Rio Madeira appears to form the western limits of its range south of the 

 Amazons ; the most southerly localities iu Amazonia as yet known are Engenho 

 do Gama and Sao Vicente, on the Guapore, 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. Nor. Zonl. 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. 



ITIiainnnjiJiiliis quixensis Cornalia, Verlebr. S>/ii. Oscnlali Coll. p. 12 (1849. — Quixos, Eastern 



Ecuador).] 

 Foynticivora bicolor Pelzeln, Zur Orii. Bras. ii. pp. 84, 156 (1868. — Engenho do Gama, Rio Guapore ; 



Destacamento do Ribeirao, Salto do Girao, Borba, Rio Madeira) ; Hellmayr, Nov. Zool. xiv. 



1907. p. 373 (Borba). 



Nos. 44, 91, 484, 744. SS ad., Calama, 15, 22. vi., 29. viii., 1. xi. 1907. " Iris 

 dark brown, feet and bill black." — Wing 541 — 56 ; tail 50—53 ; bill 14 mm. 



F. (J. bicolor has lately been met with in various localities south of the main 

 valley of the Amazons. Mr. Hoffmanns obtained it at Teffe (Rio Solimoens), near 

 Itaituba, left bank of the Rio Ta|)aj6z, as well as at Borba. Prof Ihering received 

 specimens from the Rio Jurua,* and Miss Snethlage records it from Bom Lngar, 

 Pnrus.t 



The newly described /'. coiuohrina, 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 spots on 

 the greater upper wing-coverts are much larger, as correctly pointed out by Count 

 Berlepsch. I have examined, in addition to the typical series of F. microsticta in 

 Tring, two adult males secured at Saint-Jean-du-Maroni by M. Le Moult, in the 

 collection of the Munich Museum. 



• Bevista Mug. Paul. vi. 1905. p. 442. 



t F. bicolor Snethlage, Jok™. /. Orii. 190H. p. 16— F. co)i4ohriim{\) eadem, I.e. p. 24; eadem, Bui. 

 Miis. GoeUi V. 190.S. p. 57. — 1 have examined the examples, which are, of course, referable to F. bicolor. 

 F. consobrina is confined to Western Ecuador and W. Colombia. 



X Nov. Zool. XV. 19U8. p. 157 (Rio Approuague, Cayenne). 



