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 Cesar 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. 14 



Tigrisoma salmoni 



Crax albert I 



Ncocrcx colombianus 



Creciscus albigularis 



Jacana nigra 



Amazona ochrocephtf.a panamcn- 



sis 

 Ara m Hi tar is 

 Coccycita rutila gracilis 



Dendrocincla lafresnayei lafres- 

 nayei 



Formicarius analis vircsccns 

 Cercomacra nigricans 

 Ramphocccnus rufiventris sanctcc- 



marthcc 

 Myrmopagis mclcrna mclccna 

 Tliamnophilus nigriceps 

 Attila idiotes 



N o t h ar c h u s hyperrhynchus Myiarchiis fcrox panamcnsis 



subsp. 

 Veniliornis kirkii cccilii 

 Scapancus mclanolcucus malher- 



bii 

 Chloroncrpcs chrysochloros auro- 



sus 

 Chrysotrogon caligatits columbi- 



anus 

 Lcpidopyga Ullice 

 Danwphila jnUcc julice 

 Phacthornis longirostris snsurrns 



Pipromorpha olcaginca parca 

 Myioactctcs cayancnsis hellmayri 

 Elccnia viridicata pallcns 

 Platytriccus albogularis neglectus 

 Todirostrum nigriceps 

 Oncostoma olivaccum 

 Onychorynchus mexicanus fra- 



terculus 

 Thryophilns leucotis leucotis 

 Phcugopcdius fasciatoventris fas- 



ciatoventris 



14 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. 



