( 373 ) 

 86. Formicivora bicolor Pelz. 



Formkivom bicolor Pelzeln, Zur Ornilh. Bras. ii. p. 156 (18G8. — Engenho do Gaum, Mattogrosso ; 

 Ribeirao, Salto Girao and Borba, llio Madeira). 



No. 1326. (J ad., Borba, 13. xi. 06. " Iris brown, feet and bill black."— 

 Wing 52, tail 47, bill 14| mm. 



Nos. 1336, 1355, 1360. ? ? ad., Borba, 15, 17, 22. xi. 06. " Iris brown, feet 

 and bill black."— Wing 53, 51, 54 ; tail 50, 52, 51 ; bill 14—15 mm. 



Practically identical with specimens from the Rio Tapajoz (cf. supra, p. 17). 



87. Ramphocaenus melanurus amazonum Hellm. 



Ramphocaenus melanurus amazonum Hellmayr, Nov. Zool. xiv. p. 06 (1907. — Telle). 



No. 1030. cJ ad., Humaytha, 1. viii. 06. "Iris light brown, feet and bill 

 grey." — Wing 541, tail 50, bill 22 mm. 



Nos. 1364, 1366. S ¥ ad., Borba, 22, 29. xi. 06. " Iris brown, feet plumbeous, 

 bill blackish, below grey." — Wing 54, 51 ; tail 40 ; bill 25, — mm. 



These specimens agree perfectly with the type from Teffe. The head aud 

 back are of the same dull sepia brown, in No. 1030 perhaps a little lighter ; 

 the cheeks and ear-coverts whitish, the latter washed with pale brownish on the 

 posterior end, the sides of the neck creamy bnff (Ridgw. Nomencl. v. 11); the 

 under parts white with a delicate pale creamy buff tinge across the foreneck and 

 on the sides of the breast and abdomen. The outermost pair of tail-coverts shows 

 a long, dull smoky-greyish apical spot. 



According to our present knowledge, in South America, east of the Andes, 

 the following geographical forms of the R. melanurus group are to be distinguished : 



a. R. melanurus melanurus Vieill. 



Ramphocaenus melanurus Vieillot, Xouc. Diet, xxix. p. 6 (1819. — " Bresil, par Delalande fils," i.e. 



Eio de Janeiro). 

 Troglodytes rectirostris Swainsou, Zool. Illustr. i. (Vertebrosa) Pt. 3. pi. 140 (1820-21.— "Brazil "). 

 Thryothorus Gladiator Wied, Beitr. Naturg. Bras. 3. ii. p. 751 (1831.— S.E. Brazil). 



Ilab. Eastern Brazil : S. Panlo (Ignaj^) ; Rio de Janeiro (Delalande) ; Bahia 

 (Wucherer) ; Pernambuco (W. A. Forbes) ; C'apitn River, south of Para (Wallace). 



Adnlt. Top of the head and back bright russet brown, the latter scarcely, 

 if any, paler than the cap ; cheeks and ear-coverts rufesceut buff, sides of the 

 neck much deeper, ochraceous buff (Ridgw. v. 10); sides of the breast and belly 

 deep ochraceous buff. Wing 46 — 52 ; tail 44 — 49 ; bill 21 — 22i. mm. 



Examined. 1 ad., Rio de Janeiro, collected by Delalande, type of R. melanurus 

 (Paris Museum); 2 cS 3 ad., Iguape, S. Paulo (Krone coll., Tring Museum); 5 adults 

 and young, Bahia (Wucherer and Kammerlacher coll., Mus. Brit, and Vienna); 1 ad., 

 Pernambuco (W. A. Forbes coll., Brit. Mus.) ; 1 ad., Capim River, Para (Wallace 

 coll., Brit. Mus.). 



N.B. — The bird from Para agrees in every respect with the examples from 

 Bahia and S. Paulo. 



b. U. melanurus trinitatis (Less.). 



Ramphocaenus trinitatis Lesson, ffe». Zool. 18;i9. p. 42 ("in insula trinitatis"). 



Bab. Island of Trinidad; Venezuela: Suapure aud La Pricidn, ('aura River 

 (Klages and Andre coll.), Munduapo aud Nericagua, Orinoco River (Cherrie coll.), 



