324 Annals of the Carnegie Museum. 



Chlorophonia callophrys, Tangara dozvi, Chlorospingus regionalis , 

 Atlapetes gutturalisy Cyanolyca cucullata, Elcenia martinica subpagana, 

 Pachyrhajnphus versicolor costaricensis, Rhopoctites rufobrutmeus, Ore- 

 opyra cinereicauda, Eugenes spectabilis, Campy lopterus hemileucurus , 

 Colibri cyanotis, Pyrrhura hoffmanni hoffmanni , Claravis mondetoura , 

 Geotrygon costaricensis, G. chiriquensis, Nothocercus frantzii. 



Sub-Andean Belt (7,000 to 10,000 feet). 



The Sub-Andean corresponds to the Sub-Timberline of the Sonoran, 

 except that it extends about 1,000 feet lower. Its characteristic 

 species are : Thryorchilus browni ridgwayi, Basileuterus melanotis, 

 B. melanogenys, Diglossa plumbea, Chlorospingus pileatus, C. zeledoni, 

 Buarrenion brunneinucha, Pezopetes capitalis, Acanthidops bairdi ', 

 Pseudocolaptes lawrencii, Margarornis rubiginosa, Premnoplex brun- 

 nescens brunneicauda, Scytalopus argenfifrons, Zeledonia coronata, 

 Pante?pe imignis, Antrostomus saturatus, Pharomacrus mocinno costa- 

 ricensis^ Columba albilinea crissalis, Chamozpetes unicolor, Odonto- 

 pliorus guttatus, O. veraguensis. 



North-Coastal Zone (Pacific — o to 1,200 feet). 



This Zone covers the lower portion of the northern half of the Son- 

 oran Plains Region, and includes the lower portions of the Nicoya 

 Peninsula, Guanacaste, and the Pacific mainland slope of the Gulf of 

 Nicoya. It is, for the most part, covered with heavy timber, which 

 holds the moisture somewhat during the dry months. There are many 

 species which inhabit both the North Coastal and the South Coastal 

 regions and also the Caribbean Tropic Zone. There are others found 

 only in the two Pacific belts, and still another group found only in the 

 South Coastal Belt, but there are few strictly tropical birds found in 

 the North Coastal region, which are not also found in the South 

 Coastal. In other words nearly all of the species peculiar to the region 

 included in the North Coastal are of Sonoran affinities and are placed 

 under the Sonoran Plains Region. Those peculiar to this belt which 

 are strictly of tropical origin are : Thryophilus pleurostictus ravus, 

 T. rufalbus castanonotus, Dendrocincla liomocliroa acedesta, Amazilis 

 cinna??io?nea, Taper a ncevius y Morococcyx erythropygus, Hylovianes 

 mo??iotula, Eumomota superciliaris australis, and Crypturus cinna- 

 momeus. 



