74 



Annals of the Carnegie Museum. 



the semi-arid northwest section around Santa Marta, often side by side 

 with forms of more arid habitat. Not only are these two respective areas 

 of humid forest separated from each other, but also, if the physical 

 and faunal characters of the Rio Ces9.r Valley were as Dr. Chapman 

 has supposed, they would be isolated from the main Humid Tropical 

 of Colombia by the interposition of many miles of arid country. In 

 the list which follows are included only such forms as are not known 

 to range into Venezuela, and whose Colombian origin, so far as the 

 Santa Marta region is concerned, is therefore undoubted.^* 



Tigrisoma salmoni 



Crax alberti 



Neocrex colomhianus 



Creciscus albigularis 



Jacana nigra 



Amazona ochrocephala panamen- 



sis 

 Ara militaris 

 Coccycua rutila gracilis 

 N othar c hus hyperrhynchus 



subsp. 

 Veniliornis kirkii cecilii 

 Scapaneus melanoleucus malher- 



hii 

 Chloronerpes chrysochloros auro- 



sus 

 Chrysotrogon caligatus columbi- 



anus 

 Lepidopyga lillics 

 Damophila julicB julia 

 Phaethornis longirostris susurrus 



Dendrocincla lafresnayei lafres- 



nayei 

 Formicarius analis virescens 

 Cercomacra nigricans 

 Ramphocanus rufiventris sancta- 



marthcB 

 Myrmopagis melcena melcsna 

 Thamnophilus nigriceps 

 Attila idiotes 



Myiarchus ferox panamensis 

 Pipromorpha oleaginea parca 

 Myiosetetes cayanensis hellmayri 

 "Elcsnia viridicata pall^ns 

 Platytriccus albogularis neglectus 

 Todirostrum nigriceps 

 Oncostoma olivaceum 

 Onychorynchus mexicanus fra- 



terculus 

 Thryophilus leucotis leucotis 

 Pheugopedius fasciatoventris fas- 



ciatoventris 



1* It must be clearly understood that these lists of Tropical Zone forms are 

 only partial and provisional, and intended to be suggestive rather than final. 

 With the exact faunal affinities of so many species still more or less uncertain, 

 it has been thought best to restrict the lists to some of the characteristic forms 

 in each category, since these will serve our purpose to indicate the origin of 

 the fauna as a whole. Too much dependence, it may be remarked in passing, 

 should not be placed on Dr. Chapman's faunal lists as a basis for comparison, 

 since his work in the Caribbean Fauna is admittedly incomplete. 



