56 



BANGS CHIRIQUI BIRDS 



MEASUREMENTS (iii millimeters) 



P.N.E.Z.C. 

 Vol. Ill 



Remarks. — Henicorhina collina is very different from any gray- 

 breasted wood wren yet named, its deep gray breast, banded belly 

 and striped throat at once distinguishing it. 



Costa Rica specimens are similar, but all the characters given 

 above are less strongly marked in the specimens I have seen, and 

 this form also is perhaps a distinct one. H. collina hardly needs 

 comparison with H. leucophrys of South America. 



Microcerculus acentetus ' sp. now 



Three adult males, Boquete, 4000 to 5000 feet, March and 

 April. 



Type, from Boquete, southern slope of Yolcan de Chiriqui, 5000 feet alti- 

 tude, $ adult, no. 8651, coll. of E. A. and O. Bangs, collected April 18, 

 1 90 1, by W. W. Brown, Jr. 



Characters. — Apparently a very different species from any heretofore 

 bed. All the colors very dark; no cross-banding whatever on under 

 parts or back, the crown alone with slight dusky tips to the feathers, pro- 

 ducing a scaly appearance. 



Color. — Upper parts deep, rich burnt umber, without a trace of cross-bar- 

 ring ; top of head duller, about mummy brown, the feathers very slightly 

 tipped with dusky, producing a scaly appearance ; upper tail coverts blackish, 

 edged with dark burnt umber; sides of head, breast and middle of belly dull 

 drab graj slightly washed with burnt umber ; throat dull grayish white ; lower 

 flanks and under tail coverts dark burnt umber, wholly unbarred; wing 

 and tail blackish brown; wing coverts and tertials margined with same color 



l< k. 



1 Acentetus — without spots . r poi 



