BUCCO SWAINSONL 



SWAINSON'S PUFF-BIRD. 

 PLATE XXIII. 



Tamatia macrorhynchos, Swains. Zool. 111. ser. i. ii. pi. 99 (1822). 



jBucco swainsoni, Gray et Mitch, Gen. B. i. p. 74 (1846). 



Bucco swainsoni. Gray, List of Fiss. B. M. p. 47 (1848). 



Ca'pito swainsoni^ Bp. Consp. i. p. 146 (1850). 



Bucco swainsoni, Sclater, Ann. N. H. ser. 2, xiii. p. 358 (1854). 



Bucco swainsoni, Scl. Syn. Bucc. p. 8 (1854). 



Tamatia swainsoni, Bp. Consp. Vol. Zyg. p. 13 (1854). 



Bucco swainsoni, Sclater, P. Z. S. 1855, p. 196. 



Capito macrorhynchus, Burm. Syst. Ueb. ii. p. 283 (1856). 



Bucco swainsoni, Pelz. Sitz. Ak. Wien, xx. p. 509 (1856). 



Bucco swainsonii, Scl. Cat. A. B. p. 269 (1862). 



NotJiarchus swainsoni. Cab. et Hein. Mus. Hein. iv. p. 151 (1863). 



Bucco swainsoni, Pelz. Orn. Bras. p. 21 (1871). 



Bucco swainsoni, Scl. et Salv. Nomencl. p. 105 (1873). 



Notharclms swainsoni. Cab. J. f. O. 1874, p. 227. 



Suprk niger^ fronte angustissima et torque colli postici albis; subtus albus, torque subpectoral! nigro^ ventre 

 fulvo, lateribus nigro transfasciatis ; remigum et rectricum paging, inferiore cineracea, illorum pogoniis 

 internis basin versus albis; rostro nigro ; pedibus fuscis^ unguibus nigris : long, tota 8'8, alse 4*0^ 

 caudae 3"2, rostri 1"5. 



Hab. in Brasiliae meridionali-orientalis regione sylvatica. 



Obs. Sp. a B. macrorhyncho fronte multo angustiore alb^ et ventre fulvo diversa. 



In the case of birds spread over a large area in South America, especially as regards those that 

 pass their lives in the dense forests, the forms that tenant the wood-region of South-eastern 

 Brazil are in most cases easily distinguishable. This has arisen, no doubt, from the fact that 

 the Brazilian forest-region is cut off from that of the great valley of the Amazons by a range of 

 open plains or " campos," which form nearly as effectual a barrier to the intercommunication of 

 forest-loving species as a similar area of sea. We have a good example of this phenomenon in 

 the present Puff-bird, which, although strictly a representative species of the same group as the 

 three others which have preceded it, is obviously distinct, and recognizable at first sight by well- 

 marked characters. 



Swainson's Puff-bird was first made known to us by the well-known zoologist whose name it 

 bears, by a figure and description contained in the first series of his 'Zoological Illustrations.' 

 Mr. Swainson was disposed to regard his bird " from Southern Brazil, where the species is not 



