Mr. P. L. Sclater on upecies of Formicariidse. 463 



3. IIypocnemis melanopogon. 



<? . Cinereus, subtus dilutior, ventre medio albicante ; gula nigra : 



alis hrunnescenti-niyris, tectricibus omnibus albo rnaryinatis : 



Cauda nigra rectricibus omnibus anguste albo termiaatis : rostro 



nigra, pedibiis fuscis. 



? uut $ junr. Supra mari adulto similis, subtus gutture et pectore 



cinereo variegutiSy gastroio albo, lateruUter cinerascentiore. 

 Long, tota 4*5, alfie 2'o, caudse r5. 

 Hab. In Peruvia Orientali, Chamicurros (Hauxwell). 

 Mus. Brit, et P. L. S. 



This bird nearly resembles H. poecilonota and H. myiotherina in 

 style of colouring, but the bill is longer and more slender, and more 

 like that of some of the species of 3Igrmeciza. From //. paicilnnota 

 it is easily distinguished by the want of the white edgings of the 

 interscapularies, from //. mijiotherina by the restriction of the black 

 colour to the throat, the want of the superciliary mark, and by the 

 ■white termination of the rectrices. 



I have two s[)ecimens of this species in my own collection, and 

 there is one in the British Museum, which formed part of Haux- 

 well's collection from Chamicurros. 



4. FORMICIVORA MEL^NA, 



Fidiginoso-niger, subtus intensior ; lateribus plumosis cum tectri- 

 cibus subalaribus albis : alarum tectricibus et caudce rectrici- 

 bus albo terminatis : rostro et pedibus nigris. 



Long, tota 4"0, aire 3"1, caudse 2"5. 



Hab. New Grenada, Bogota. 



Mus. P.L. S. 



Obs. Similis F. axillari, sed colore corporis supra nigro nee plnm- 

 beo dignoscenda. 



5. FORMICIVORA UROSTICTA. 



Cinerea, subtus dilutior et magis albescens : plaga gulari elongata 

 nigra : alis nigricanti-cinereis extus cinereo strictissime lim- 

 batis, tectricibus autem nigris, albo terminatis : cauda nigra, 

 rectricibus omnibus albo late tei'tninatis ; recti'icis unce utrin- 

 que extimce tertia fere parte apicali alba, hoc colore apud alias 

 rectrices gradatim decrescente : rostro nigro, pedibus fuscis. 

 Long, tota 3'.5, alpe 2*0, caudse 1*2. 

 Hab. In Brasilia Orientali. 

 Mus. Brit, et P. L. S. 



Obs. A Formicivora axillari et aliis affinibus colore subtus dilu- 

 tiore, gula nigra magis restricta et praesertim rectricum apicibus late 

 albis distinguenda. 



6. Formicivora brevicauda. 



Formicivora brevicauda, Sw., Zool. Journ. ii. p. 148. 



<? . Cinereus unicolor, plaga ovali in gutture et pectore superiore 

 nigra : alis nigricaniibus extus cinereo limbalis, harum autem 



