117 



vescente ; teclricibus alarum minoribus cyaneis, speculo alari 

 fiavo. 

 This beautiful species, figured by Lesson in his Centurie Zoolo- 

 £^ique, pi. 68, considerably resembles the several blue species of 

 Tanayra, often confounded with the T. episcopus, L., on account of 

 their similarity to it ; I mean the T. archiepiscopus, Desm. ; T. Sayaca, 

 L. (T. glauca, Sparrm) ; T. olivascens, Licht. (erroneously taken for 

 the female of the T. Sayaca) ; but the beautiful goldfinch-like yellow 

 spot, which it bears at the base of the primaries, as well as the 

 blacker and much more robust bill, almost bullfinch-shaped, distin- 

 guish it from them all. 



22. EuPHONiA vioLACEA. E. mgro-ckalybea ; fronte pectore ab- 

 domineque Jlavissimis ; tectricibus alarum inferioribus, remigi- 

 btis intus basi, maculdque media pogonii interni, recti-icisque la- 

 teralis albis. 



23. EuPHONiA HiRUNDiNACEA, Nob. E. olivaceo-fiava, fronte et 

 subtus Jlavd, vertice genisque nigro-chalybeis, remigibus rectrici- 

 busque nigricantibus, margine externa olivaceis ; rostro nigra 

 valde uncinato, subhirimdineo. 



24. Arremon giganteus. Nob. A. Icete olivaceus ; rostro robus- 

 tissimo nigerrimo, capite nigro ; giild media alba (imde nigro- 

 cincta) ; pectoi'e abdomineque plumbeo, crisso fiavo, ceruginoso ; 

 remigibus nigris, caudd olivaced, valde rotuiidatd. 



As the chief difference between this bird and the Silens consists 

 in its greater dimensions, I subjoin them : 



Long. tot. 9" 6'"; rostr. 1" ; al. 4" 6'" ; caud. 4" 6'" ; tars. 1". 



2.5. Icteria Velasquezi. I. viridis ; pectore fiavo-aiirantiaco ; 

 rostro nigricante, mandibuld albicante. 



An important addition to the genus Icteria, which hitherto com- 

 prehended only one species, the Pipra polyglotta of Wilson, Icteria 

 viridis, Vieill., from which it differs in the more intense, almost 

 orange-colour of the breast, and by the whiteness of the under man- 

 dible of the bill, which is entirely black in the viridis. J. viiidis 

 may stand characterised as follows : 



r. viridis, pectore fiavo ; rostro ex toto nigro, 



26. Thamnophilus doliatus. T. albo nigroquefasciatus, vertice 

 candido, nigro cincto. 



27. Thamnophilus rutilus, Vieill. T.rufo-cinnatnomeiis, subtus 

 flavo-cinnamomeus, rostro robusto, genis albo nigroque variis ; 

 remigibus medio fuscis ; rectricibus rufis, unicoloribus. 



28. Tonus cinereus, Briss. (PI. Enl.) T. cinereo-olivaceus, 

 subtus fiavissimiis, pileo nigricante ; alis ?iigricaMibus, tec- 

 tricibus lemigibiisque exferne fiavo limhatis, caudd gradatd ni- 

 gra, rectricibus lateralibus apice albis ; rostro nigro, subtus al- 

 bido. 



