244 FORMICAEIIDiF-, 



24. Myrmotherula cinereiventris. 



Myrmotlicrula cinereiventrip, Sd. et Salv. P. Z. S. 1867, pp. 756, 978, 

 et 1873, p. 274 (rerii) ; iid. Nomencl. p. 72 ; Pelz. Orn. Bras. p. 81 ; 

 Tacz. P. Z. S. 1882, p. 30 (N.E. Tei-u) ; id. Orn. P6r. ii. p. 43 ; 

 Salv. Ihk, 1885, p. 426 (Brit. Guiana). 



Mvrmotlierula assimilis, Pvh. Orn. Bras. pp. 81, 1-52 (1871). 



Above cinereous ; -winj^-coverts blackish with white margins ; tail 

 in some specimens slightly tipped with white : beneath similar, but 

 l)aler, and rather more whitish on the throat and middle of the belly ; 

 bill and feet plumbeous : whole length 35 inches, wing 2-2, taill"2. 

 Female. Above pale cinereous; wing-coverts slightly tipped with 

 whitish : beneath cinnaraomcous : tbroat whitish. 



Hah, Guiana, Amazonia, and Ecuador. 



The uniform grey under surface at once distinguishes this species. 



a,b. c? $ fid. sk. Bartica Grove, Brit. Guiana Salvin-Godman Coll. 

 ( Whitely). 



c. S ad. sk, Camacusa, Brit. Guiana Salvin-Godman Coll. 



( Wkih'Iy). 



d. S ad. sk. Guiana (Broivn). Sclater Coll. 



e. (S ad. sk. Cayenne. Sclater Coll. 



(Type of the species.) 



/. J ad. sk. Surinam (Bartleft). Sclater Coll. 



ff. S ad. sk. Eio Negro (Katterer). Sclater Coll. 



h. ? ad. sk. Borba, Brazil {Katterer). Sclater Coll. 



i,.j. cT 2 ad. sk. Pebas, E. Peru (Hau.rwell). Sclater Coll. 



/.•, I. d 2 ad. sk. Yquitos, Upper Amazons Salvin-Godman Coll. 



( JMntehj). 



m,n. S $ ad. sk. Chyavetas, E. Peru {Bartlett). Salvin-Godman Coll. 



o,p. d ? ad. sk. Chyavetas, E. Peru. E. Bartlett [C.]. 



q, r. S $ ad. sk. Sarayacu, Ecuador (Bt/cJdei/). Salvin-Godman Coll. 



s. (S ad. sk. Sarayacu, Ecuador {Bvchley). Sclater Coll. 



t, u. 2 ad. sk. Eio Napo, Ecuador. Sclater Coll. 



V. (S ad. .sk. Rio Napo, Ecuador. Gould Cbll. 



12. HEEPSILOCHMUS * „ 



Type. 

 Ilerpsilochmus, Cab. Wiec/m. Arch. xiii. pt. i. p. 224 (1847). II. pileatus. 



The genus Herpsiloclimus comprehends eight small species with 

 pied plumage and rather lengthened tails, distributed over the forests 

 of Guiana, Amazonia, and Brazil. Thej' are somewhat "Wagtail-like 

 in general appearance. The rectrices are much graduated in most 

 of them. The bill is more thickened than in M>/rmoiherida and 

 Formicivora. 



* Refer also to the following species : — 



1. Herpsilociimus axillaris. 



Tliamnophilus axillaris, Tsck. Fmin. Per., Aves, p. 174. 

 Herpi^ilochmus axillaris, Tac:. Orn. Tir. ii. p. 35. 

 Herpsiloclimus puncticeps, Tac:. I'. Z. S. 1882, p. 30 (N.E. Peru). 



2. H. AXILLARIS /EQUATOEiALis, Tacz. ct Berl. P. Z. S. 1885, p. 100 (Ecuador). 



3. H. MOTACiLLoiDES, Tacz. P. Z. S. 1874, pp. 136, 530; id. Orn. Per. ii. 

 p. 35 (Peru). 



