BIRDS OF NORTH AND MIDDLE AMERICA. 83 



times flanks also) and center of abdomen nearly white ; bill and feet 

 as in adult male, but mandible pale grayish brown (bluish gray in 

 life ?); length (skin), 112-116 (114); wing, 50-52.5 (51.5); culmen, 

 43-45 (43.8); tarsus, 14-14.5 (14.1); middle toe, 11-11.5 (11.2).« 



Immature male. — Similar to the adult female, but whitish super- 

 ciliary stripe more distinct, and with throat, chest, and breast inter- 

 mixed wdtli black. 



San Miguel Island, Bay of Panama. 



Dnjmophila intermedia (not Formicivora intermedia Cabaiiis) BANcis, Auk, xviii, 

 Jan., 1901, 30 (San Miguel I.. Bay of Panania). 



Formicivora alticincta Bangs, Proc. New Engl. Zool. (.'lub, iii, Mar. 31, 1902, 

 71 (San Miguel I., Bay of Panamil; coll. E. A. and O. Bangs). — Thayer 

 and Bangs, Bull. Mus. Comp. Zool., xlvi, 1905, 150 (San Miguel I., crit.). 



Genus TERENURA Cabanis and Heine. 



Terenura b Cabanis and Heine, Mus. Hein., ii, July, 1859, 11. (Type, Myiotliera 



maculata Maximilian.) 

 Phyllobatesc Bertoni, Aves Nuevas del Paraguay, 1901, 112. (Type, F. cryth- 



ronotus JiQxiom = Myiothera maculata Maximilian.) 



Small Formicariidfs (length about 90-100 mm.) with long tail, 

 slender bill, no trace of rictal bristles, and bright coloration. 



"This little group leads awa}^ from Formicivora [i. e. Micror'hojnas] 

 to PsilorJiamphus and Rhamphocsenus. The bill is hardly longer than 

 in Formicivora, but smaller; the nostrils are more elongated, and 

 have a slight membraneous operculum as in Psilorhamphus. The 

 tail is rather long, thin, and delicate; the tarsi are more like those 

 of Formicivora, and show the divisions of the scutes."'^ 



'' Terenura is a peculiar genus of doubtful affinities, but remarkable 

 for the bright colours of its members. These colours (black, bright 

 yellow, chestnut, and olive), it is true, are all to be found in different 

 species of Formicariidae, but in Terenura alone are they associated 

 in a single bird. 



"Cabanis and Heine, who founded the genus, placed it between 

 Rampliocxnus and Elliimra {= Formicivora) , and in this position it 

 was left by Mr. Sclater. We can not see that it has much in common 

 with either of these forms, which, different as they are, both possess 

 well-defuied rictal bristles, not a trace of which can we see in Terenura. 

 Mr. Sclater speaks of the presence in the latter genus of a slightly 

 membraneous nasal operculum such as is found in RhampJiocxnus, 

 but the specimens of Terenura callinota before us have open nostrils 

 without any overhanging membrane. 



a Three specimens. 



b "Von ripTjV (zart) und oOpa (Schwanz)." (Cabanis and Heine.) 

 <^(j)dXXov, a leaf; Parrje, one who treads or covers; a climber. (Bertoni.) 

 <* Sclater, Cat. Birds Brit. Mus., xv, 1890, 257. 



