222 rORMICARIID.T3. 



d. 2 fid. sk. ('hoctum, Vera Paz (Salvin). Tweeddale Coll. 



e. (J" ad. sk. Giiiatip, Costa Rica (t'M/7/ijo/). Salvin-nodmau Coll. 

 /. 2 i'cl- sk. Costa Rica {Endries). Tweeddale Coll. 



g. c? ad. sk. Santa Fe, Vera^nxa {Arc6). Salviii-Godmau Coll. 



/(, i. (S 2 ^^- sl^' Calovevora, Veragua (Arce). Salviii-Godman Coll. 



j, k. cJ 2 ad. sk. Veragua {Arce). Sclater Coll. 



/. $ ad. sk. Panama. Tweeddale Coll. 



m, n. S fitl. ; 0. 2 Bogota. Sclater Coll. 



ad. sk. 



p, q. (S ad. ; r. S Bogota. Purchased. 



jr. ; s. 5 ad. sk. {Tyjies of the species.) 



t. S ad. sk. Bogota. Sahin-Godmau Coll. 



u. cJ ad. sk. Sau Esteban, Venezuela Salvin-Godman Coll. 



( Goering) . 



V. S jr- sk. Caracas, Venezuela. T). Dyson [C.]. 



zp. (5 ad. sk. Caripe, Venezuela (Goer/w/). Sclater Coll. 



•^"> y- 6 2 ad. sk. Sarayacu, Ecuador {Buckley). Salviu-Godnian Coll. 



z, a', c? 2 ad. sk. Pallatanga, Ecuador (Fraser). Sclater Coll. 



//. S ad. sk. Babahoyo, Ecuador {Fraser). Sclater Coll. 



c'. 2 ad. sk. Ropaybamba, Peru {Jelski), Sclater Coll. 



d'. 2 ad. sk. Huambo, Peru. Salvin-Godman Coll. 



e' . (S ad. sk. Peru {Stolzmann). Sclater Coll. 



4. Dysithamnus olivaceus. 



Thamnophilus olivaceus, Turh. Faun. Per., Aves, p. 174, t. xi. fig. 1. 

 Dysithamnus olivaceus, Cah. Wiegm. Arch. 1847, pt. i. p. 2:24 ; Scl. 



F.Z.S. 1858, p. 541 (Bolivia) ; Scl. et Salv. Nomencl. p. 71; Tacz. 



Orn. Fer. ii. p. 2^. 



Similar to D. semicinereus, but with the middle of the belly pure 

 ■white, 



JIab. Bolivia and Int. of Brazil. 



This species requires further examination, but if I am correct in 

 referring to it the specimens from Matto Grosso, it is clearly dis- 

 tinct from D, semicinereus and D. mentulis. 



a,h. J 2 ad, Chapada, Matto Grosso {JI. H. Salvin-Godman Coll, 

 Smith), 



5, Dysithamnus spodionotus. 



Dysithamnus spodionotus, Salv. et Godm. Ibis, 1883, p. 211 (Brit. 

 "Guiana) ; Sah. Iljis, 1885, p. 424 (Brit. Guiana). 



Above nearly uniform ashy, rather darker on the head ; wing- 

 coverts black with slight white margins ; wings slightly edged with 

 olivaceous : beneath pale slaty, throat and middle of belly nearly 

 white; under wing-coverts white; inner margins of wing-feathers 

 pale straw-colour ; bill black ; feet brown : whole length 4-8 inches, 

 wing 2-5, tail 1'7, Female. Above brown ; cap rufous ; beneath 

 pale brown ; throat and middle of belly white. 



JIab. British Guiana, 



This is of the same form as the preceding species, but at once 

 distinguished by its uniform grey upper surface, and the absence of 

 yellowish on the belly. 



