216 FORMICAEIIDiE. 



This form has also a somewhot Dendrocolaptinephimogo, but the 

 bill is more comprcssod and more strong!}- notched than in Biatas. 

 Tbe two closely allied species arc found in Central America and 

 Ecuador. 



Keij to the Species. 



A. Cap lighter, like back 1. anabatimis, p. 216. 



B. Cap darker, rufescent 2. eequatorialis, p. 216. 



1. Thamnistes anabatinus. 



Thamnistes anabatinus, Sclat. et Salv. P. Z. S. 1860, p. 299 ; iid. 

 Ibis, 1860, p. 399 (Guatemala) ; iid. Nomend. p. 70 ; Scl. Cat. 

 A. B. p. 176; Lawr. Ami. Lye. N. Y. ix. p. 107 (Costa Rica); 

 Frantz. J.f. O. 18G9, p. 305 (Costa Rica) ; Salviii, P. Z. S. 1870, 

 p. 194 (Veragua). 



Above" olivaceous brown, slight superciliarj- stripe pale ochra- 

 ceous ; outer margins of wings rufous ; tail wholly pale chestnut ; 

 large concealed blotch on the interscapularies pale yellowish chest- 

 nut, with a slight blackish edging : beneath paler, more olivaceous ; 

 bill plumbeous, beneath pale ; feet black : whole length 5- 7 inches, 

 wing 2-7, tail 2-2. Female similar, but without the basal spot on 

 the interscapulars. 



Ifab. Central America from Guatemala to Chiriqui. 



a, b. Ad. sk. Choctum, Vera Paz {Salvin). Salviii-Godmau Coll. I 



c. Ad. sk. Choctum, Vera Paz {Salvin). Sclater Coll. ( 



(Types of the species.) 



d. Ad. sk. Choctum, Vera Paz. 0. Salvin [C.]. 



e. Ad. sk. Cajabon, Vera Paz (Salvin). Sclater Coll. 



/. Ad. sk. Samayoa, Vera Paz. Salvin-Godman Coll. 



ff, h, i. Ad. sk. Vera Paz. 0. Salvin [C.]. 



j. (5 ad. sk. Angostura, Costa Rica (CV«-- Salvin-Godman Coll. 



miol) . 



k,l. Ad.sk. Tucurriqui, Costa Rica (^ree). Salvin-Godman Coll. 



m. (S ad. sk. Calovevora, 'N'eragua [Arce). Salvin-Godman Coll. 



n. $ ad. sk. Bugaba, Chiriqui (Arce). Salvin-Godman Coll. 



2. Thamnistes aequatorialis. 



Thamnistes asquatorialis, Sclater, P. Z. S. 1861, p. 380 (Ecuador) ; 

 id. Cat. A. B. p. 176 ; Scl. et Salv. Noonencl. p. 70. 



Like T. anabatinus, but darker above, and the cap rufous : whole 

 length 5-5 inches, wing 2-9, tail 2-2, 

 Hub. Ecuador. 



a. Ad. sk. Rio Napo, Ecuador. Purchased. 



b. Ad. sk. Rio Napo, Ecuador. Sclater Coll. 



c. Ad. sk. Nanegal, Ecuador (Fraser). Sclater Coll. 



(Types of the species.) 



d. e. Ad. sk. Sarayacu, Ecuador (BucAiey). Salvin-Godman Coll. 



