130 



than the typical memhers of the genus. The bill also is shorter, 

 broader, and more flattened, and furnished with many basal bristles. 

 Together with Lafresnaye's Grallaria nana, they seem to form a sub- 

 ordinate group pointing towards Conopophaga. 



3. Hypocnemis melanopogon. 



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



alts brunnescenti-nigris, tectricibus omnibus albo marginatis : 



cauda nigra rectricibus omnibus anguste albo terminatis : rostro 



nigro, pedibus fuscis. 



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



cinereo variegatis, gastrceo albo, lateraliter cinerascentiore. 

 Long, tota 4*5, alee 2*5, caudse 1*5. 

 Hab. In Peruvia Orientali, Chamicurros (Hauxwell) . 

 Mus. Brit, et P. L. S. 



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

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

 like that of some of the species of Myrmeciza. From H. poecilonota 

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

 interscapularies, from H. myiotherina by the restraint of the black 

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

 white termination of the rectrices. 



I have two specimens 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 MEMNA. 



Fuliginoso-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, alee 3*1, caudse 2"5. 

 Hab. New Grenada, Bogota. 

 Mus. P. L. S. 



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

 bei dignoscenda. 



5. FORMICIVORA UROSTICTA. (PI. CXXVI. fig. 1.) 



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 terminatis ; rectricis unce utrin- 

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

 rectrices gradatim decrescente : rostro nigro, pedibus fuscis. 



Long, tota 3*5, alee 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 preesertim rectricum apicibus late 

 albis distinguenda. 



