116 PIPEID^. 



feature so common in the Tyrannidse. In our country we find two species of the first 

 section and none of the second. 



They are dull-coloured birds, alike as to the sexes, and without bright markings of 

 any sort. Their range extends from Southern Mexico to Panama, and the allied 

 southern forms spread over most of Tropical America to South-eastern Brazil. Like 

 other Pipridae they are found only in dense forest. 



The bill is much more compressed than in the typical Piprinae, and the subterminal 

 maxillary notch is very distinct ; the nostrils are elliptical and open, and are situated 

 at the lower end of the nasal fossa ; the rictal bristles are well developed. The wings 

 are rounded, the fourth primary a little longer than the third and fifth, the first equals 

 the tenth. The tarsi and toes are slender, the outer toe united to the middle toe a long 

 way from the base. 



1. Heteropelma verae-pacis. 



Heteropelma verm-pacis, Scl. & Salv. P. Z. S. 1860, p. 300 ' ; 1870, p. 837 ' ; Ibis, 1860, p. 400 ' ; 

 Scl. P. Z. S. 1862, p. 19" J Cat. Birds Brit. Mus. xiv. p. 320 ' ; Lawr. Ann. Lye. N. Y. vii. 

 p. 473 ^ ix. p. 1 16 '' ; Salv. P. Z. S. 1870, p. 200 \ 



Supra olivaceo-brunneum ; alia et cauda mfescentioribus ; abdomine medio olivaceo : rostro et pedibus corneis, 

 mandibulae basi pallida. Long, tola 6-5, ate 3'5, caudse 2-5, rostri a rictu 0-8, tarsi 0-8. (Descr. maris 

 ex Choctum, Guatemala. Mus. nostr.) 



§ mari similis. 



Hah. Mexico, Playa Vicente {Boucard *) ; British Honbueas, Orange Walk ( Gaumer) ; 

 Guatemala, Choctum i, Yzabal {0. S & F. D. G.); Hoitoiteas, San Pedro (G. M. 

 Whitely^) ; Costa Kica, Balza, Angostura, Cervantes [Carmiol) ; Panama, Volcan 

 de Chiriqui, Bugaba, Chiriqui, Castillo, Chitra, Calovevora {Arce^). 



The specimens of this species from Costa Eica and Panama are rather darker than 

 typical examples from Vera Paz, but the difierence is hardly tangible. The darkest of 

 all our specimens are from Chitra and Calovevora, these contrast strongly with examples 

 obtained close to the line of railway which we attribute to H. stenorhynchum. Hetero- 

 pelma veroB-pacis is an inhabitant of the forest-region of Eastern Guatemala, where it is 

 not uncommon ; it spreads northward to Playa Vicente in the Mexican State of Vera 

 Cruz*. Its range in altitude extends from the sea-level to an altitude of about 

 1500 feet. It frequents the undergrowth of the lofty forest, keeping near the ground. 



2. Heteropelma stenorhynchum. 



Heteropelma stenorhynchum, Scl. & Salv. P. Z. S. 1868, pp. 628, 632 ' ; Scl. Cat. Birds Brit. Mus. 



xiv. p. 320 \ 

 Heteropelma vera-pacis, Salv. P. Z. S. 1883, p. 424 '. 



Praecedenti similis, sed supra pallidior ; alis minus ruf escentibus, pUeo rufescente tincto, abdomine toto grises- 

 cente. (Descr. exempl. ex Panama. Mus. nostr.) 



Hab. Panama {A. H. Markham ^, Arce). — Venezuela i. 



