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 with black. 
San Miguél Island, Bay of Panama. 
Drymophila intermedia (not Formicivora intermedia Cabanis) Banes, Auk, xviii, 
Jan., 1901, 30 (San Miguél I.. Bay of Panama). 
Formicivora alticincta Banas, Proc. New Engl. Zool. Club, iii, Mar. 31, 1902, 
71 (San Miguél I., Bay of Panamé; coll. E. A. and O. Bangs).—THayer 
and Banas, Bull. Mus. Comp. Zool., xlvi, 1905, 150 (San Miguél I., crit.). 
Genus TERENURA Cabanis and Heine. 
Terenura 6 CaBanis and Hering, Mus. Hein., ii, July, 1859, 11. (Type, Myiothera 
maculata Maximilian.) 
Phyllobates¢ Bertoni, Aves Nuevas del Paraguay, 1901, 142. (Type, P. eryth- 
ronotus Bertoni= Myiothera maculata Maximilian.) 
Small Formicariide (length about 90-100 mm.) with long tail, 
slender bill, no trace of rictal bristles, and bright coloration. 
‘This little group leads away from Formicivora [1. e. Microrhopias] 
to Psilorhamphus and Rhamphocenus. 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 Formicwora, and show the divisions of the scutes.’’4 
‘‘ 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 Formicariide, but in Terenura alone are they associated 
in a single bird. 
‘“‘Cabanis and Heine, who founded the genus, placed it between 
Ramphocenus and Ellipura (= 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-defined 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 Rhamphocenus, 
but the specimens of Terenura callinota before us have open nostrils 
without any overhanging membrane. 
@ Three specimens. 
6 “Von tépny (zart) und olga (Schwanz).’’ (Cabanis and Heine.) 
¢ héddov, a leaf; Barnc, one who treads or covers; a climber. (Bertoni.) 
4Sclater, Cat. Birds Brit. Mus., xv, 1890, 257. 
