BUCCO. 513 



2. Bucco pectoralis. 



Bucco pectoralis, Gray, Gen. Eirds, i. p. 74, t. 26 ' j Scl. P. Z, S. 1855, p. 196 ' ; Mon. Jacamars and 

 Puff-birds, p. 75, t. 34'; Cat. Birds Brit. Mus. xix. p. 184 '; Lawr. Ann. Lye. N. Y. vii. 

 p. 464 ^ Scl. & Salv. P. Z. S. 1864, p. 363 «; 1879, p. 536^; Wyatt, Ibis, 1871, p. 374". 



Supra chalybeo-niger, nitens, dorso medio, uropygio et tectrioibus alarum stricte albo fimbriatis ; capite toto 

 summo (fronte inclusa), capitis lateribus et pectore lato pure chalybeo-nigris ; tectrioibus auricularibus, 

 torque cervicali postica, gutture toto et abdomine albis, hypochondriis albis nigro transfasciatis ; cauda 

 nigricante ; rostro nigro, pedibus nigricantibus. Long, tota 77, aim 4-0, caudse 3-2, rostri a rictu 1-6, 

 tarsi 0-7. (Descr. maris ex Lion Hill, Panama. Mus. nostr.) 



$ mari sunilis. 



Hah. Pakama, Lion Hill (M'Leannan^^), Chepo (Arce). — Colombians. 



This Bucco was for many years known only from the plate in Gray and Mitchell's 

 ' Genera of Birds,' taken from a specimen in the British Museum from an unknown 

 locality and acquired in 1843 i. It was not until M'Leannan began to explore the 

 Isthmus of Panama along the Railway Line that fresh information concerning the bird 

 came to light through specimens sent to Lawrence and to us. Arce obtained us a 

 single example during a short visit to Chepo on the Eio Bayano, south of Panama, but 

 he never came across it during his subsequent journeys between Panama and Chiriqui. 

 From the mainland of Colombia we have two records of the species, for Mr. C. W. 

 Wyatt met with it in the dense forest situated between Naranjo and the Magdalena 

 river ^, and Salmon found it at Nichi in the Cauca Valley '^. It will thus be seen that 

 the range of Bucco pectoralis is very restricted. 



As a species this Bucco is quite distinct from B. dysoni and its allies ; this is readily 

 seen not only by its smaller size, but by the white throat being surrounded by black on 

 the sides of the neck, the wholly black forehead, and the conspicuous white ear-coverts, 

 which are connected by a white band round the back of the neck. According to 

 Mr. Wyatt the iris is brown ^. 



3. Bucco subtectus. 



Bucco subtectus, Scl. P. Z. S. 1860, p. 296 ' ; Mon. Jacamars and PufE-birds, p. 83, t. 27 ' ; Cat. 

 Birds Brit. Mus. xix. p. 186 ' ; Scl. & Salv. P. Z. S. 1864, p. 363 ' ; 1879, p. 536 \ 



Bucco tectus, Lawr. Ann. Lye. N. Y. vii. p. 318 \ 



Supra niger, fronte et pileo antico albo punctatis, plaga scapulari utrinque alba : subtus albus, torque pectorali 

 et stria infra oculos nigris, bypochondriis albis nigro variegatis ; cauda nigra, rectricibus utrinque quatuor 

 externis albo medialiter fasciatis et macula in pogonio interno albo terminatis ; rostro nigro, pedibus 

 nigricantibus. Long, tota 5-8, alse 2-7, caudse 2-3, rostri a rictu 1-1, tarsi 0-5. (Descr. maris ex Lion 

 Hill, Panama. Mus. nostr.) 



5 mari similis. 



Hah. Panama, Veraguas (^rce), Lion Hill {M'Leannan^^).—CowM.hik^; W. Ecuador i. 



This is a western form of the old Guianan Bucco tectus of Boddaert, the " Barbu a 

 poitrine noir de Cayenne " of the ' Planches Enlumihees,' no. 688, fig. 2, from which it 

 may be distinguished by its much narrower black band across the chest. 



BIOL. CENTE.-AMBR., Aves, Vol. II., Mavch 1896. 65 



