BUAEEEMON. — AEEEMON. 323 



laete flavis ; rostro nigro ; pedibus coryHnis. Long, tota 7-4, alsB 3-4, caudae 3-6, rostri a rictu 0-7, tarsi 

 1-0. (Descr. maris ex Parita, Costa Eica. Mus. nostr.) 

 $ mari similis, dorso medio pauIo fuscescentiore. 



Bob. Costa Eica, San Jose 2, Dota 2, Parita (Carmiol), Eancho Eedondo (v. Frantzius 3, 

 Carmiol^), LaPalma^, Quebrada Honda (u. Frantzius ^% Volcan de Irazu {ArcS, 

 Bogers, J. Cocyper 2), Navarro (Boucard^) ; Panama, Volcan de Chiriqui (Arce). 



Mr. Lawrence when describing this species placed it in the genus Tachyphonus ; but 

 the almost exact similarity in the colouring of the plumage of the sexes, the general 

 structure, and the absence of any glossiness in the pterylosis, indicate that its proper 

 place is in Buarremon. 



Its sombre plumage, relieved by the bright yellow tibiae, render B. tibialis a remark- 

 able bird, and it has no near allies. 



It is not an uncommon species in Costa Eica, where it frequents the mountain forests. 

 We have also received specimens from the Volcan de Chiriqui, which perhaps marks 

 the limit of its range in a south-easterly direction. 



We have figured a male from Parita, Costa Eica. 



8. Buarremon crassirostris. 



Buarremon crassirostris, Cassin, Pr. Ac. Phil. 1865, p. 170' ; Salv. P. Z. S. 1867, p. 140, t. 14"; 



1870, p. 188 ' ; Lawr. Ann. Lye. N.Y. xi. p. 101 \ 

 Buarremon mesoxanthus, Salv. P. Z. S. 1866, p. 73 \ 



Supra oliyaceus, capite siimmo castaneo ; loris, regione oculari et tectricibus aurieularibus cinereo-nigris ; subtus 

 plumis guise medialiter albis extus et intus nigris, pectus versus cinereis ; pectore, hypochondriis et crisso 

 oHvaceis, abdomine medio Isete flavo ; alis et cauda fusoo-nigris illis extus dorso concoloribus ; rostri maxilla 

 cornea, mandibula albicaate, pedibus corylinis. Long, tota 6-0, ate 3'0, caudae 2-6, rostri a rictu 0-75, 

 tarsi 1-15. (Descr. maris ex Yeraguas, Panama. Mus. nostr.) 



5 mari similis. 



ifoj. Costa Eica, Barranca (C«rm?oP ^) ; Panama, Cordillera de Tole 2, Cordillera del 

 Chucu 2 3^ Santiago de Veraguas ^ ^ (Arce). 



B. crassirostris has its nearest ally in B. castaneiceps of Northern Colombia and 

 Ecuador, one of the most obvious differences being its yellow abdomen. Both are 

 rather aberrant members of Buarremon, having a very robust bill and shorter tail. The 

 eggs, too, differ — those of B. castaneiceps, according to Salmon, being white, thickly 

 spotted at the larger end with red, the eggs of B. brwimeinucha being spotless pale 

 greenish blue. 



The name B. mesoxantlius given to Panama specimens by Salvin ^ is synonymous with 

 that of Cassin, and, though of later date, was published prior to the arrival of the 

 description of the latter in this country. 



AEEEMON. 



Arremon, Vieillot, Anal. p. 32 (1816) (type Tanagra silens, Bodd.) ; Scl. P. Z. S. 1856, p. 80. 



There are about twelve known species of this purely Neotropical genus, of which 



41* 



