( 350 ) 
219. Myrmotherula longipennis Pelz. (subsp. ?). 
Myrmotherula longipennis Pelzeln, Zur Orn. Bras, ii. p. 153 (1868.—Marabitanas, Rio Negro) ; 
Hellmayr, Nov, Zool. xiv. p. 383 (Borba). 
No. 1011. ¢ ad., Marnins, Rio Machados, 13. vii. 1908. “Iris black, feet 
plumbeons, bill black.” —W ing 56 ; tail 29 ; bill 13 mm. 
No. 936. ? ad., Marnins, 21. vi. 1908. “ Iris dark brown, feet plumbeons, bill 
black, below greyish.” —Wing 57; tail 33; bill 13 mm. 
The adult male agrees in coloration with our series from Cayenne, Venezuela 
(Caura), ete., but has much shorter wings and tail than any other specimen I have 
seen. Though the cinereous colour of the belly is rather paler than in the majority 
of Cayenne and Venezuelan skins, one from the Caura Valley matches it exactly. 
There is no trace of the white quill-lining more or less conspicuous in all other 
examples examined. 
The female also differs from six others (Cayenne, Caura) by its slightly 
‘shorter tail, much less distinct dingy whitish quill-lining, and olive-brown (instead 
of bright rasset or cinnamon-brown) edges to the remiges. 
An adult male from Borba, obtained by Mr. Hoffmanns on his first expedition 
in 1906, however, is fully as large as those from more northern localities (wing 63 ; 
tail 36 mm.). 
A much larger series than at present available is required to make out the 
geographical races of M. longipennis. 
[220. Myrmotherula garbei Lhering (°). 
Cf. Hellmayr, Nov. Zool, xiv. p. 383. 
Left bank of the Rio Madeira: Humaytha (Hoffmanns). 
The same form has been recorded from Villa Braga, left bank of the Tapajéz, 
by Miss Snethlage.* I am still in doubt as to its proper specific appellation. | 
221. Myrmotherula menetriesii berlepschi Hellm. 
Nos. 72, 922. do ad., Calama, 18. vi. 1907, 6. viii. 1908.—Wing 52, 53; tail 
28, 29; bill 13} mm. 
No. 208. ? ad., Calama, 12. vii. 1907.—Wing 54; tail 29; bill 13 mm. 
No. 1041. ? ad., Marnins, Rio Machados, 21. vii. 1908.—Wing 53; tail 26 ; 
bill 14 mm. 
“ Tris greyish brown or brown, feet plumbeons, bill black.” 
The males agree perfectly with the type of M/. berlepschi, most obligingly lent 
by Dr. Lorenz, of Vienna. The four specimens differ from M. m. menetriesii t 
merely by the clearer grey of the plumage, the under parts being decidedly lighter, 
less bluish, the cheeks and malar region more whitish grey, and the back likewise 
paler. The difference in the markings of the rectrices alluded to in the original 
description of M. berlepschi does not hold good. The females of the two forms are, 
however, much more different. That of M. m. berlepschi may readily be distinguished 
by having the upper wing-coverts mainly bright cinnamon-brown (instead of dull 
grey with indistinct buffy olive edges), the outer web of the remiges cinnamon 
* Journ. f. Orn. 1908. p, 511, 
+ I had the two original specimens of MV. boliviana Berl. from San Mateo, N. Bolivia, and a series 
from Teffé (cf. Nov, Zool, xiv. p. 69) for comparison. 
