J ^; 2 3 °] BANGS — CHIRIQUI BIRDS 47 



Characters. — Similar to S. sylvioides Lafr. of southern Mexico, but larger; 

 rump, wings, tail, under and upper tail coverts, paler rufous; back paler and 

 not so uniformly brown, more mixed with grayish olive. From S. amazonus 

 Lafr. of the upper Amazon, the new form differs in its very much smaller — 

 shorter and weaker — bill and smaller size, though the two are much alike in 

 color. 



Color. — Head and under parts grayish olive, slightly washed with reddish 

 brown on middle of belly and sides ; back raw umber, with a strong grayish 

 olive cast ; rump, upper tail coverts and under tail coverts, pale ferruginous ; 

 tail rufous chestnut ; tertials ferruginous (a little darker and slightly more 

 rufous than rump); secondaries similar, but with large central black markings 

 and buff-yellow bases of inner webs ; lesser and middle coverts, alula, primary 

 coverts and outer edges of primaries, dull olive, slightly more reddish olive on 

 outer edges of primaries ; rest of primaries dusky, with central buff -yellow 

 markings on inner webs, showing as a band on under side of closed wing ; 

 under wing coverts dull buff-yellow. 



measurements (in millimeters). 



Sex Exposed 



and age Wing Tail Tarsus uulmen 



Remarks. — When Mr. Ridgway wrote his synopsis of the genus 

 Sittasomus 1 he was in doubt where to place Veragua specimens, 

 putting them under S. sylvioides with a question mark. On com- 

 paring the good series in the present collection with specimens of 

 5. sylvioides of southern Mexico and with the types of S. amazonus. 

 the Chiriqui bird proves to be different from either, though closely 

 related to both. From the former it differs in larger size and 

 paler color of back, rump, wings, etc., and from the latter in 

 smaller size and much weaker bill. 



1 Proc. U. S. Nat. Mus., Vol. XIV, pp. 507-510, 1891. 



