12 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



Jiasileuterus Icucopygms verar/uchh^is Bangs, Auk, vol. IS, 1901, p. 368 

 (Divala, Panama). — Bangs, Proc. Now England Zool. Club, vol. 3, 1002, 

 p. 60 (Boquete, Panama). 



Basileulerus semicervinus veraguensls Ridgway, Bull. U. S. Nat. Mus., No. 

 50, vol. 2, 1902, p. 756, excl. syn. part (descr. ; range; refs.). — Bangs, 

 Auk, vol. 24, 1907, p. 306 (Boruca and Paso Real, Costa Rica; crit.).— 

 Cakriker, Ann. Carnegie Mus., vol. 6, 1910, p. 794 (Costa Rican lo<;ali- 

 ties and refs.; range). — Stone, Proc. Acad. Nat. Sci. Philadelphia, 1918, 

 p. 274 (Rio Siri, Panama; habits). 



Basilcuie^iis fulvicaiida toddi Giuscoir, Amer. Mu.s. Nov. No. 280, 1927, p. 

 14 (Boqueron, Chiriqui, western Panama; orig. descr.; type in coll. Amer. 

 Mus. Nat. Hist.). 



Siibspecific characters. — Similar to Phaeothlypis leucopygia levo- 

 pygia, but under parts more buffy, less whitish, and brown shading 

 not quite so dark. 



Measurements. — Male: Wing, 62-66 (average, 64.5); tail, 50-54 

 (51); bill, 11-13 (12); tarsus, 21-23 (22.5). Female: Wing, 58-65 

 (62) ; tail, 47-51 (48.5) ; bill, 11.5-12.5 (11.8) ; tarsus, 22-23 (22.5). 



Range. — Tropical Zone of Panama, from the Canal Zone westward 

 along the Pacific slope to extreme southwestern Costa Rica. 



Remarks. — The two races leucopygia and veraguensis may be told 

 apart in series by the characters above specified, which seem to be 

 the only ones to hold good. Both races vary somewhat in the color 

 of the tail, the basal portion of which is always richer buffy in fresh 

 plumage, but I can not find that they differ in the relative extent of 

 this pale part, as said by Mr. Ridg^vay. Some examples from both 

 ■Costa Rica and Panama, it is true, show a tendency for the buffy 

 color to invade the dark area on the outer rectrices, approaching thus 

 the condition we find in semicervina, but I am by no means •satis- 

 fied that the one form passes into the other, and prefer to keep them 

 distinct. Sharpe's veraguensis was based mainly on specimens from 

 western Panama, but his chosen type came from Paraiso Station, on 

 the line of the Panama Railway. Mr. Griscom, finding that three 

 skins from the Tsthmus in the old Lawrence collection (now in th€ 

 American Museum of Natural History), collected by McLeannan and 

 Galbreath (presumablj^ at Lion Hill) were clearly referable to scml- 

 cervina, naturally assumed that veragueiisis was merely a synonym 

 of that form, and he therefore proceeded to give a new name to the 

 bird of western Panama. I can not agree to this disposition of the 

 case. Four specimens from the Isthmus (Rio Indio, Gatun, and 

 Rio Siri) which I have examined are indistinguishable, so far as I 

 can see, from the common run of skins from western Panama and 

 southwestern Costa Rica. ]Moreover, the type of veraguen.sis agrees 

 perfectly with specimens from the latter locality which I sent for 

 comparison to the British Museum, so Dr. Percy R. Lowe of that 

 institution reports. There can be no question as to the three skina 



