28 RiKER AND ClIAl'MAN, Bircfs at Sii ii/iu'eiii , Brazil. fjanuary 



114. Cymbilanius lineatus {Leach). — Three specimens taken in June, 

 1S87. 



[115. Thamnophilus melanurus Gy«W. — A female taken by Smith 

 January 26, 1S89.— F. M. C] 



1 16. Thamnophilus simplex Scl. — A male taken June 4, 1SS7. 



[In general coloration this specimen agrees exactly with the description 

 and plate of T. simplex (Ibis, 1873, p. 387, pi. 15), but -the cap is distinctly 

 blackish and not concolor with the plumbeous back as it is stated to be in 

 7'. simplex. The type of simplex, however, taken in January, may have 

 been a bird of the year, having the black cap as yet undeveloped. — F. 

 M. C] 



iiY- Thamnophilus luctuosus {Lickt.). — A male and female taken near 

 the border of streams. 



[The female does not agree with Tschudi's description of the female of 

 this species (Fauna Per., p. 172), but differs from the male only in being 

 slightly smaller and in having the cap chestnut instead of black. Of three 

 specimens collected by Smith one has the cap chestnut, in the others it is 

 black. There is no indication of sex on the labels, but the chestnut- 

 capped bird is the smallest of the three. — F. M. C] 



[118. Thamnophilus nigrocinereus Scl. — A male taken bv Smith, Jan- 

 uary 23, 1SS9.— F. M. C] 



119. Thamnophilus naevius {(hn.). — A male taken June 13, 18S7, in 

 the lowlands. 



120. Thamnophilus ambiguus Siv. — A female taken June 13, 1S87, in 

 the lowlands, climbing about vines, had a nervous, twitching movement 

 of the tail. 



121. Thamnophilus inornatus Ridgw. 



Tkamnop/iiltis inornatus RiDGW. ,Proc. U. S. Nat. Mus., X, 1S87, p. 522. 



A male taken June 30, 18S7, amongst the vines and underbrush of a 

 dense forest on the 'mountain.' 



[Agrees in size and general coloration with a specimen of T. tnurinus 

 Pelz. from Merume Mountains, British Guiana (Whitely). It may be 

 distinguished from that species, however, by the absence of apical spots 

 on the wing-coverts and tail ; and the concealed white interscapular spot 

 is also wanting. — F. M. C] 



122. Thamnophilus radiatus nigricristatus {Lawr.). — A male taken in 

 the lowlands July 15, 1884. 



[While not fully adult, this specimen is sufHciently mature for compar- 

 ison with the types of nigricristatus with which, allowing for the ditTer- 

 ence in age, it agrees. — F. M. C] 



123. Myrmotherula axillaris melanogastra (Spix). — [Comparison of 

 the four specimens in the Riker collection with AI. axillaris from Bogota 

 and M. a. melanogastra from Bahia, prove them to be much nearer the 

 latter than the former. In the coloration of the dorsal surface they 

 exactly agree with the Bahia bird, but in the color of the flanks and tip- 

 ping of the tail-feathers are evidently intermediate between it and true 

 axillaris. A male taken June 16, 1887, has the feathers of the entire 



