1918.] NATURAL SCIENCES OF PHILADELPHIA. 261 



209. Cercomacra t3rrannina tyrannina (Sclater). Tyrannine Antbird. 



Female, Gatun, July 30, 1911. Iris grayish-brown, bill black above 

 pale grayish-brown below, feet blue-gray. 

 Shot in a forest thicket. 



[210.] Myrmopagis melaena (Sclater). Black Ant- Wren. 



211. Myrmopagis fulviventris (Lawrence). Lawrence's Ant-Wren. 



Three males and a female, Gatun, May 14, 1911, January 21, July 

 21, 1912, and June 25, 1911. Iris light yellow, bill bluish-black 

 lighter below, feet pinkish, toes blue. 



Found in low wet forest, near the ground, creeping about the 

 shrubbery like a warbler or vireo. 



212. Myrmeciza boucardi panamensis Ridgway. White-bellied Antbird. 



Male and female, Tabernilla, March 19, 1911, and Pedro Miguel, 

 May 5, 1912. Iris reddish-brown, bill black, feet pale. 



The pair collected March 19 had their stomachs filled with ants and 

 I watched them for some time hopping back and forth along a trail 

 of leaf-cutter ants. 



213. Myrmeciza exsul exsul Sclater. Sclater's Antbird. 



Two males and a female, Gatun, July 2, 1911, March 24, 1912, and 

 August 6, 1911. Iris brown, skin around the eye blue, bill black, feet 

 bluish-gray. 



A noisy species, inhabiting the thick jungle. 



214. Ramphocaenus rufiventris rufiventris. Northern Long-biUed Ant-Wren. 



Female, Gatun, June 25, 1911. Iris brown, bill grayish-brown, 

 feet blue-gray. 

 A forest bird. 



[215.] Microbates cinereiventris semitorquatus (Lawrence). Half-collared Ant-W>en. 

 [216.] Anaplops bicolor (Lawrence). Bicolored Ant-Thrush. 



217. Gymnocichla nudiceps nudiceps (Cassin). Bare-crowned Antbird. 



Two males, Gatun, February 5 and April 9, and one Tabernilla, 

 April 8, 1911. Iris dark brown, bill black, feet blue-gray. 



Several individuals were seen in the jungle climbing along roots and 

 low stems; never saw one on the ground. 



218. Hylophylax naevioides (Lafresnaye). Spotted Antbird. 



Two males, Gatun, May 14 and August 20, 1911. Iris brow^i, bill 

 black, feet blue-gray. 



Nest found in fork of small bush in the forest, about four feet from 

 the ground, a thin pensile cup containing two nearly feathered young. 



219. Formicarius moniliger panamensis Ridgway. Panama Antbird. 



Female. Iris brown, bill black, feet brownish, bare skin pale 

 bluish-gray. 



