254 MESSRS. SCLATER AND SALVIN ON [Mar. 4, 



river rises, when the current is fearfully rapid. After arriving at 

 Baradero, the Tambos of the Teniente Governador, I prepared for 

 five or six days' journey through the dense forest of this wonderful 

 region, rain continuing to fall the whole of the five days of tramp, 

 in which time I arrived at the magnificent open town of Xeberos. I 

 there formed a fair collection of all the small birds which are always 

 to be found upon the open sandy campos. I made myself well 

 acquainted with the surrounding country, and ascertained that there 

 was an Indian footpath, some six or eight days' journey, through 

 the forest to Chyavitas ; so I determined upon going to that town, 

 and returning the same for the rest of may baggage, which I was 

 compelled to leave behind. Chyavitas is a small town situated on 

 one of the lower spurs of the eastern ranges of the Andes, runniug 

 towards the great river. I obtained from that region several in- 

 teresting specimens, amongst which was the Ateles bartlettii, Gray 

 (see Proc. Zool. Soc. 1867, p. 748). I returned to Xeberos by the 

 same road, and thence descended the Apyanas, which flows into the 

 Huallaga, below the town of Lagunas, and not into the Maranon as 

 has been stated. I ascended the Huallaga as far as Lagunas, aud 

 thence took the steamer to Yurimaguas for the purpose of preparing 

 my collections to forward to England. I collected about Yurimaguas 

 until April 1867, and then went on to Chamicuros, where I passed 

 twelve months. I afterwards visited Santa Cruz on the Huallaga, 

 where I made the largest and most valuable portion of the collections 

 brought home." 



The following is a summary of the birds met with of this district, 

 so far as they are known to us from the collections above referred to, 

 and of the species amongst them which may be considered probably 

 peculiar to the Upper-Amazonian fauna : — 



,-. , Species Species not m i. i 



Order. l ,. L ,■ Total, 



peculiar, peculiar. 



I. Passeres 72 173 245 



II. Cypseli 9 34 43 



III. Pici 4 11 15 



IV. Coccyges 14 41 55 



V. Psittaci 5 20 25 



VI. Accipitres 24 24 



VII. Striges 4 4 



VIII. Steganopodes 2 2 



IX. Anseres 5 5 



X. Herodiones 13 13 



XI. Columbre 7 7 



XII. Gallince 2 5 7 



XIII. Grues 1 7 8 



XIV. Gralla: 12 12 



XV. Gavire ... 3 3 



XVI. Crypturi 1 4 5 



108 365 473 



Our general conclusions as to the avifauna of the Peruvian De- 

 partment Amazouas, from the examination of these collections, are 

 as follows : — 



