6 TTEANNID^. 



in the forests of the Pacific elope between the port of Champerico and Ketalhuleu. 

 Mr. Gaumer's specimen from Orange Walk was obtained close to the level of the sea. 

 It only occurs in dense high forests, where it keeps about the growth of underwood. 

 Mr. Nutting obtained one specimen at Sucuya in Nicaragua in deep woods. Both 

 P. cancrominus and P. alhogularis have a close ally in P. mystaceus of Guiana and 

 Brazil, but both the northern species have a whiter throat, and, moreover, P. alhogu- 

 laris has a black mandible. 



2. Platyrhynchus albogularis. 



Platyrhynchus albogularis, Scl. P. Z. S. 1860, pp. 68 \ 92 \ 295 ' ; Salv. Ibis, 1869, p. 314 ' ; P. Z. S. 



1870, p. 196'; Berl. & Tacz. P. Z. S. 1883, p. 553'; Tacz. Orn. Per. ii. p. 225"; Scl. Cat. 



Birds Brit. Mus. xiv. p. 67, t. 8. f. 2'. 

 Platyrhynchus cancroma, Cass. Pr. Ac. Nat. Sc. Phil. 1860, p. 144 °. 

 Platyrhynchus cancrominus, Lawr. Ann. Lye. N. Y. ix. p. 110 '° ; v. Prantz. J. f . Orn. 1869, p. 306 ". 



P. cancromino similis, sed supra obscurior, ooulorum ambitu (prseter ciliam ochraceam) nigricantiore, mandibala 

 quoque nigricante differt. 



Eab. Costa Eica^, Navarro (/. Cooper ^'^, v. Frantzius^^), Irazu {Rogers), Naranjo (/. 

 Carmiol ^o) ; Panama, Volcan de Chiriqui ^, Calovevora ^, Calobre ^ {ArcS); Panama, 

 Truando ( Wood ^). — Venezuela ; EcgADOE 1 2 3 e . Peru ''. 



Western America, from Peru to Costa Eica, and thence eastwards to Venezuela, 

 defines the limits of the range of this Platyrhynchus. Immediately to the northward 

 in Nicaragua its place is taken by P. cancrominus. It is thus found throughout 

 Panama and Costa Eica in company with P. superciliaris. Mr. Wood observed it on the 

 Truando river, near its junction with the Atrato, in high trees, whence it was difficult 

 to obtain ^. Fraser met with it in the dark underwood of the forest at Esmeraldas ^, as 

 well as in other places in Western Ecuador ^ 2, and we have a specimen from Santa Eita 

 in the same region, and Stolzmann also found it at Chimbo ®. In Peru the last-named 

 collector obtained an example at Tambillo, at an elevation of 5800 feet above the sea'^. 

 Jelski remarks that its note is monotenous, and that it perches on the small branches 

 of the forest trees. 



The existence of a vertical yellow crest does not seem to be always a characteristic 

 of the male, for one of Stolzmann's Chimbo female specimens had this crest well 

 developed. 



b. Caput castaneum, stria superciliaris utrinque nigra. 



3. Platyrhynchus superciliaris. 



Platyrhyncha cancroma, Lawr. Ann. Lye. N. Y. vii. p. 330 \ 



Platyrhynchus superciliaris, Lawr. Ibis, 1863, p. 184^; Ann. Lye. N. Y. viii. p. 7' is. p 110*- 



Salv. P.Z. S. 1867, p. 146', 1870, p. 196"; Ibis, 1885, p. 292^; Scl. Cat. Birds Brit. Mus! 



xiv. p. 68'. 



