18/8.] MR. A. BOUCARD ON BIRDS FROM COSTA RICA. 53 



100. Setophaga aurantiaca, Baird. 



Several specimens from Cartago and Naranjo. This species in- 

 habits the forests ; in the middle of the day they go along the 

 streams, flying from one tree to another, feeding on insects. I have 

 always seen them going in pairs. 



101. Setophaga torquata, Baird. 



Several specimens of this rare species, all of them killed in the 

 forest on the Volcano of Irazu. Always seen in pairs. The female 

 differs very little from the male. 



Family Vireonid^e. 



102. VlREOSYLVIA FLAVOV1RIDIS, CaSS. 



One specimen, from San Jose', April. 



103. Vireosylvia olivacea, Linn. 

 San Jose, January to May. 



104. Vireosylvia philadelphica, Cass. 

 Several specimens, from San Jose, January. 



105. Vireosylvia flavifrons, Vieill. 



Several specimens, from San Jose, January, March. 



106. Vireosylvia joseph.e, Sclat. 

 Only one specimen, from Naranjo, April. 



107. Hylophilus decurtatus, Bp. 

 One specimen, from San Jose, May. 



108. Cyclorhis flavipectus, Sclat. 

 Cyclorhis subflavescens, Cab. 



Several specimens, from San Jose, February, March, and April. 



Family Ampelid^e. 



109. Ptilogonys caudatus, Cab. 



Several specimens, killed in the forest of oak trees on the Volcano 

 of Irazu ; also some specimens from Navarro, May. 



110. Phainoptila melanoxantha, Sal v. 



Several specimens of both sexes, from Navarro and Rancho Re- 

 dondo, January to May. Found in pairs along the streams — not in 

 the region of the oak trees, as suggested by Mr. Gr. Dawson Rowley, 

 but much lower down, at an altitude of about 4000 feet, and in 

 semitropical forests. The two sexes of this rare species have been 

 beautifully figured, from specimens obtained by me, in (he 'Orni- 

 thological Miscellany,' part x. 



