82 



D. baritula, Pipra by P. mentalis, Formicarius by F. moniliger, and 

 Cotinga by the splendid Cot. amabilis lately described by Mr. Gould. 

 This fact seems to show that the Isthmus of Panama is not the 

 boundary between the northern and southern zoological regions of 

 the New "World, or, so to speak, between the Nearctic and Neotropical 

 Faunae, but that this must be sought for farther northwards, probably 

 some way even beyond the Isthmus of Tehuantepec. 



The late Mr. Dyson procured examples of this Calliste during his 

 voyage up the Chamalican river in the republic of Honduras. Two 

 of these specimens are now in the British Museum. 



