592 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Griscom recognized that the population of the Darien forests 

 differed from that of the western mountains in Panama and described 

 them both as new. With longer series from Colombia now available 

 it is appropriate to agree with the summary by Zimmer (Amer. Mus. 

 Nov., no. 1126, June 26, 1941, pp. 4-5), where the birds of eastern 

 Panama and the western Andes south in Colombia to western 

 Ecuador are recognized as the race transandinus, described originally 

 from Ecuador. 



MIONECTES OLIVACEUS Lawrence: Olive-striped Flycatcher, 

 Moscareta Rayada 



Small ; olive-green above ; two lightly marked yellowish olive wing 

 bars ; under surface light olive, streaked with olive-yellow ; abdomen 

 pale yellow. 



Description. — Length 123-146 mm. Ninth primary narrowed for 

 distal half, markedly so in adult male, to lesser degree in females and 

 immature males in first season. Adult (male and female similar in 

 color), above greenish olive with crown slightly darker; wing grayish 

 brown, edged with olive-green ; middle and greater coverts edged 

 lightly with olive-buff, forming two slightly marked wing bars ; an 

 indistinct, short post-ocular streak of dull white ; side of head other- 

 wise greenish olive, with faintly indicated paler shaft lines ; foreneck, 

 breast, and sides light olive with shaft lines of pale olive that varies 

 from whitish to yellowish on breast and side ; abdomen and under 

 tail coverts pale yellow, the latter with faint shaft lines of olive ; tibia 

 olive ; carpal edge, axillars, and under wing coverts pale yellow, with 

 the under wing coverts marked lightly with pale olive. 



Juvenile, faintly duller on the crown ; with olive streakings of 

 under surface less extensive on posterior half of sides, and reduced 

 to indefinite spots on throat and upper foreneck. 



The species ranges widely from Costa Rica through Panama, 

 and in northern South America from Colombia and Venezuela to 

 Peru. 



MIONECTES OLIVACEUS OLIVACEUS Lawrence 



Mionectes olivaceus Lawrence, Ann. Lye. Nat. Hist. New York, vol. 9, April 

 1868. p. 111. (Barranca, Costa Rica.) 



Characters. — Slightly smaller, with smaller bill ; somewhat more 

 greenish, less olive above ; darker markings of under surface some- 

 what paler ; slightly deeper yellow on lower breast and abdomen. 



Measurements. — Males (5 from Chiriqui and Costa Rica), wing 



