1861.] DR. p. L. SCLATER ON NEW AMERICAN BIRDS. 381 



7. Grallaria MEXICANA. 



Similis G. guatemalensi, sed major, colore corporis infra dilutiore, 

 ventre albicantiore, et remigibus alarum extus rufescentioribus. 



Long, tota 7'5, alae 5*0, caudse 20, tarsi 2-1. 



This Grallaria, as Mr. Salvin has already observed (Ibis, 1861, 

 p. 354), appears to be distinct from the Guatemalan bird, with which 

 I have hitherto united it. It belongs to the typical series of the 

 genus, at the head of which stands the Grallaria rex sive varia of 

 Cayenne. I am now acquainted with five species belonging strictly 

 to this section of the genus, namely — 



1. Grallaria varia, Bodd. {Turdus rex, Gm.), ex Cayenna. 



2. G. imperator, Lafr., ex Brasilia, mer.-orient. 



3. G. reguhis, Sclater, P. Z. S. 1860, p. 61, ex rep. ^quat. 



4. G. ffvatemaloisis, Prev., ex Guatemala. 



5. G. mexicana, mihi, ex Mexic. merid. 



As might have been expected, G. guatemalensis is intermediate in 

 characters between G. mexicana and G. regidus. The dimensions of 

 the three species are as follows : — 



(?. mexicana. G. guatemalensis. G. regulus. 



Long, tota 7"5 7'0 6*2 



alse 5-0 4-1 3-9 



caudse 2-0 1-8 1-2 



tarsi 2-1 1-85 1-6 



Fam. Tyrannid^e. 



8. COPURUS FUSCICAPILLUS, Sp. DOV. 



Niger : uropygio anguste albo : pileo ex cinerascente fusco, fronte 

 et loris albicantibus : alis et cauda brunnescenti-nigris : caudce 

 rectricibus intermediis valde elongatis : rostro et pedibus 

 nigris. 

 Long, tota (cum cauda) 9*0, alse 3*0, caudse rect. med. 6" 7, rect. 

 later. 2-4. 

 Hab. In Nova Granada. 



This is the commonest species of Copurus received in Bogota col- 

 lections ; but I have hitherto confounded it with C. leuconotus of 

 Lafresnaye, and sometimes applied that name to it. The recent 

 acquisition of examples of the true C. leuconotus from Guiana and 

 Ecuador has now enabled me to separate the three species (or races) 

 satisfactorily, as follows : — 



(1.) Copurus colonus. 



Pileo albescenti-griseo : dorso nigerrimo : uropygio albo. 



Muscicapa colonus, Vieill. Nouv. Diet. xxi. p. 448, et Enc. Meth. 

 p. 824 (ex Azara). 



Platyrhynchus platurus, Vieill. Nouv. Diet, xxvii. p. 17, et Enc. 

 Meth. p. 839. 



Muscipeta leucocilla, Habn, Ausl. Vog. Lief. 9. pi. 2. 



