( 383 ) 



101. Myrmotherula hauxwelli hanxwelli (Scl.). 



( If, supra, p. C8. 



Nos. 1075, 1171. 3 ad., S fere ail., Humaytha, 11, 26. viii. 06. " Iris brown, 

 feet plnml us, liill black." — Wing 52, 53 ; tail 25; bill 14 mm. 



Nor. 1047, 1055, 1083. ?? ail., Humaytha, 4, 8, 14. viii. 06. "Iris brown, 

 feet grey, bill greyish black."— Wing 51— 52 ; tail 24; bill 14 — 1 4 J. mm. 



Identical with specimens from Teffe, Itio SolimSens, and Eastern Pern. All 

 have a distinct, concealed white interscapular patch. 



102. Myrmotherula axillaris axillaris (Vieill.). 



Cf. suprd,, p. 69 ; Pelzcln, Orn. Bras. ii. 18G8. p. 82 (Borlm). 



Nos. 1052, 1150. (Jc? ad., Humaytha, 5, 24. viii. 00. "Iris brown, feet and 

 bill black." 



No. 952. ? ad., Humaytha, 19, vii. 06. " Iris brown, feet blue-black, bill 

 black." 



Nos. 1307, 1420. SS ad., Borba, 19, 30. xi. 00. "Iris brown, bill and feet 

 black." 



No. 1428. ? ad., Borba, 30. xi. 00. "Iris grey-brown, feet plumbeous, bill 

 black, below grey." 



There is no appreciable difference between the males, but the female from 

 Humaytha is very much darker on the lower parts, deep buff-yellow (Ridgw. vi. 19), 

 while that from Borba agrees with a series from Cayenne. The colour of the under- 

 snrface, however, is very variable in specimens from the same locality, and therefore 

 not a reliable character. 



103. Myrmotherula longipennis Pelz. 

 Cf. supra, p. 69. 



No. 1333. S ad., Borba, 14. xi. 06. " Iris brown, feet greyish brown, bill 

 black."— Wing 03 ; tail 30 ; bill 15i mm. 



Agrees in coloration with the adult male from Telle discussed I.e., but is rather 

 larger, the wing being fully as long as in a specimen from Cayenne. 



104. Myrmotherula garhei Ih. (?) 



Myrmotherula garbei Ihering, Revist. Mus. Paul. vi. 1904. p. 441. pi. xv. fig. 1 (100a — Rio Juru;i). 



No. 996. c? ad., Humaytha, 27. viii. 00. " Iris brown, feet and bill black." 

 —Wing 50 ; tail 28 ; bill 13.1 mm. 



Differs from the figure of the type and from a detailed description in my 

 note-book by being rather smaller and by having the upper tail-coverts uniform 

 cinereous, not tipped with black. Besides, the feathers on the sides of the chest 

 are mostly cinereous, with a broad black snbapical spot, which, however, is 

 completely hidden by the cinereous tips ; the rectrices uniform dark plumbeons, 

 and the quills distinctly edged with pure white along the inner web. However, 

 I do not lay much stress on the last-named character, as it is very variable in a 

 series of the allied M. longipennis. 



Whether referable to M. garbei or not, the bird from Humaytha is quite 

 distinct from M. longipennis and M. minor. 



