On Some Birds from Santa Mart a, Colombia. 175 



Tyranniscus chrysops (Scl.). 

 Two males, one adult, the other young, from Palomina. 



Elaenia browni Bangs. 

 Five adults from San Miguel, June. 



Elaenia sororia sp. nov. 



Eleven adults, nudes and females, ten from Palomina, May, and one 

 from San Miguel, June 16, 1898. 



Type from Palomina, Colombia, No. 5826, Q adult, coll. of E. A. and 0. 

 Bangs. Collected May 10, 1898, by W. W. Brown, Jr. Altitude, 5000 ft. 



Specific characters. — Similar to E. browni, hut darkerand not so greenish 

 above ; cap considerably darker than the back (nearly uniform in E. 

 browni) ; concealed white at base of crown pronounced (nearly obsolete 

 in E. browni); inner web of innermost tertiary only edged with white 

 (wholly white in E. browni) ; patch of greenish-yellow edging on outer 

 webs of secondaries not so bright and pronounced as in E. browni ; lining 

 of wing strongly tinged with buff — clear yellow in E. browni; bill more 

 robust and not so compressed near the tip. 



Color. — Adult in somewhat worn plumage; upper parts dull olive 

 brown (almost hair browni ; cap darker than back; large concealed white 

 patch on center of crown ; wing bars, edgings of primaries, secondaries, 

 and tertials yellowish or greenish white; lining of wing huffy; throat 

 dull gray ; breast, sides and flanks brownish gray ; abdomen and under 

 tail-coverts pale yellow to yellowish white. 



Size. — tf adult, Topotype, No. 5827 : Length, skin, 134; wing, 77; tail, 

 66; exposed culmen, 10.8; tarsus, 17.4. $ adult, Type— Length, skin, 

 128; wing, 73; tail, 63.2; exposed culmen, 10.6; tarsus, 17. 



Remarks. — K. browni and /■.'. sororia are closely related, though entirely 

 distinct species. From the material Mr. Brown has so far collected, I 

 should judge that E. sororia is found at rather lower elevations than E. 

 browni, though their ranges meet. At Palomina Air. Brown found only 

 E. sororia. At San Miguel he took five examples of E. browni and one of 

 . E. sororia. The molting season of the two species appears to be differ- 

 ent, as the specimens of E. browni shot at different dates in June at San 

 Miguel are all in fresh plumage, while all the examples of E. sororia taken 

 at Palomina in May and the one killed at San Miguel, June 16, are in 

 somewhat worn plumage. The great difference in color between the two 

 series may be in part seasonal ; but E. sororiu is probably never very 

 greenish on the upper surface. 



Both Elsenia browni and E. sororia seem to belong in that section of 

 the genus called Myiopagis by Salvin and Godman:* a group I should be 

 unwilling to allow even subgeneric rank. 



*Biol. Cent-Am., Aves, II, 1888, 26 (Type Elainea placens Scl.). 



