Carriker : List of the Birds of Costa Rica. 323 



Aphantotriccus capita/is, Rhynchocyclus margiuatus, Corapipo altera al- 

 tera, Manacus candei, Pachyrhamphus ci?inamometts, Laniocera rttfes- 

 cens, Microtriccus brunneicapillus, Cotinga amabilis, Carpodectcs nitidus, 

 Hyloctistes virgattts, Automolus cervinigularis hypophceus, Sclerurus gua- 

 temalensis, Dendrocincla ridgwayi ridgwayi, Xiphorhynchus punctigula , 

 Thamnophilus ncevius atrinttcha, Dysithamnus striaticeps, Myrmotherula 

 fulviventris > M. melcena, Ramphoccentts semitorquatus, Gymnocichla 

 cheiroleuca, Myrmeciza exsul exsul, M. Icemosticta, Phoznostictus ma- 

 cleannani satttrata, Pittasoma michleri zeledoni, Hylopezus intermedins , 

 Grallari 'cula ftavirostris costaricensis, Mi croc her a parvirostris, Agyrtria- 

 amabilis amabilis, Threnetes ruckeri, Prymnacantha conversi, Celeus 

 loricatus, C. castanetts, Veniliornis caboti, Urospatha martii, Prionor- 

 nis platyrhynchus, Trogon clathrattts, Jacamerops attrea, Bttcco dysoni, 

 Monasa grandior, Ara ambigtta, Contents aztec, Leptotila cassini 7'tna- 

 ceiventris, Geotrygon veragttensis, Odontophortts melanotis, Heliornis 

 fttlica, Eurypyga major. 



Sub-Tropic Zone (1,500 to 4,000 feet). 



Conditions in this belt are practically the same as in the Tropic 

 except that the temperature is lower. Fewer characteristic species 

 are found in this belt, it containing many neutral forms. Some of the 

 most characteristic are : Microcercttlus luscinia, Euphonia annece, Ram- 

 phocelus passerinii (also in preceding zone), Chlorothraupis earmioli, 

 Chlorospingtts olivaceiceps, Lysurus crassirostris, Saltator grandis, S. 

 atriceps lacertostts, S. magnoides mediantts, Platytriccus albogttlaris, 

 Lophotriccus squamcBcristattts minor, Acrorchilus erythrops rufigenis, 

 Sclerurus canigularis, Dysithamnus mentalis septentrionalis, Formicarius 

 nigricapillus, F. rufipectus, Grallaria princeps, Hylopezus dives, 

 Oreopyra castaneiventris calolozma, Phaethornis guy coruscus, Chloro- 

 nerpes yucatanensis, Momotus lessoni, Trogon puella, Selenidera specta- 

 bilis, Aulacorhamphus cocruleigttlaris, Pionopsittacus hcEtnatotis, Bolbo- 

 rhynchus lineolus, Odontophortts leucolcemus, Dendrortyx hypospoditts. 



Cordilleran Zone (4,000 to 7,000 feet). 



Here we have the same conditions as in the Upper Plateau described 

 under the Sonoran, but the birds here given are those of Tropical 

 origin, which through gradual acclimatization have accustomed them- 

 selves to the cooler temperature of this altitude, and contest this terri- 

 tory with the Sonoran fauna. 



