132 



ing beneath and upon the wiiigs. Likę F. ceerulescens, this bird has 

 only ten rectrices. 



9. Herpsilochmus pectoralis. 



Cinereus, dorsi medii plumis alho mixtis ; pileo nigro : fronte, 

 superciliis et lateribus cajntis albis : alis niffris, tectricum om,' 

 nium apicibus albo guttatis, secundariis lute, primariis stricte 

 albo extus rnarginatis : cauda nigra, rectricis unce titrinąue ex- 

 timce dimidio apicali et proxi7narum triuin apicibus gradatim 

 decrescentibus albis; rectricibus duabus intermediis extus an- 

 guste albo rnarginatis et tectricum caudce apicibus ąuibusdam 

 eodem colore guttatis : siibtus obscure cinereus, plaga magna 

 in pectore antico nigro : rastro plumbeo, mandibula inferiore 

 albicante : pedibus nigris. 

 Long. totą 5'0, alse 2-1, caudae 1*7. 



My attention was first called to this species when looking through 

 the specimens of this family in the Museum of the Acaderay of Nat. 

 Sc. of Philadelphia. 



There is also a single specimen in the British Museum, which 

 came, I believe, fiom the šame origin as the one at Philadelphia — 

 that is from the Massena collection. There is no locality affixed. 



In style of colouruig this bird seems to come nearest to H. pilea- 

 tus, but it is much larger in size, and the ' pectoral black pateh ren- 

 ders it easily distinguishable from every bird of the family known 

 to me. 



10. Dysithamnus xanthopterus. 



Dasythamnus xanthopterus, Burm. Syst. Ueb. d. Th. Bras. iii. 

 p. 81. 



S . Capite colloque cinereis, fronte, regione superciliari et lateri- 

 bus capitis albo striolatis : interscapidio et alis extus late 

 rufis,illo dilutiore ; dorso postico valde plumoso, colore virides- 

 centi-nifo, hujus pennarum basibus citiereis : cauda nigricanti- 

 cinerea, rectricibus extus rufescente rnarginatis : subtus a/bus, 

 lateribus cervicis cinereis, vetitris autem ochracescentibus : rostri 

 nigri mandibida inferiore pallida, pedibus nigris, 

 ? . Marisitnilis sed pileo rufo et subtus magis fusco-Jlavicans, 

 Long. totą 5-5, alse 2-4, caudse 2-0. 

 Hah. In Brasilia Orientali. 

 Mus. Brit. et P. L. S. 



The British Museum possesses the malė, and I have a female speci- 

 men of this Dgsithamnus, which is easily recognizable by its deep 

 chestnut-red wiugs and back ; the šame in both sexes. The bend 

 of the wing and whole of the upper coverts are of this colour, and I 

 could hardly, therefore, at first think it possible that this could be 

 the Dasythanitius xanthopterus of Burmeister (Syst. Ueb. d. Th. 

 Bras. iii. p. 81), although his deseriptiou agrees with the female of 

 my species. But recoUecting that i,avQi)s, though commonly used 

 in Natūrai History as synonymous with the h&imjlavus and Ėnglish 



