1872.] 



MR. W. H. HUDSON ON PATAGONIAN BIRDS. 



549 



26. Muscisaxicola merit alls. 



27. Stigmatura jtavo-cinerea 



(Burm.). 



28. Anceretes parulus. 



29. Phytotoma rutila. 



Pici. 



30. Colaptes agricola, Malh. 



PSITTACI. 



31. Conurus patagonus. 



ACCIPITRES. 



32. Harpyhaliaetus coronatus. 



33. Buteo erythronotus. 



34. Geranoaetus melanoleucus. 



35. Bubo virginianus. 



36. Glaucidium nanum. 



An SERES. 



37. Bemicla magellanica. 



38. poliocephala. 



39. Erismatura ferrvginea. 



Herodiones. 



40. Phoenicopterus ignipallia- 



tus. 



4 1 . Ibis melanopis. 



Columb.e. 



42. Columba maculosa. 



Grall^e. 



43. JEgialitis falklandica. 



44. Oreophilus totanirostris. 



Brachypteri. 



45. Podiceps major. 



46. ■ rollandi. 



TlNAMI. 



47. Eudromia elegans. 



*48. Nothura darwini, G. R. 

 Gray. 



So far as I know, two naturalists only have hitherto collected 

 birds in this locality— the late Professor d'Orbigny and Mr. Dar- 

 win ; and the only authorities we have to refer to, on the birds of 

 this district, are the former's 'Voyage dans l'Amerique Meridio- 

 nale,' and the third volume of the ' Zoology of the Voyage of the 

 Beagle.' It would appear, however, that one or other of his pre- 

 decessors were fortunate enough to obtain specimens of nearly all the 

 birds peculiar to the district, leaving to Mr. Hudson only the little 

 Cnipolegus, which I have named after him. 



The total number of species in Mr. Hudson's collection from the 

 Rio Negro is forty eight. Of these the following seven, so far 

 as our present knowledge extends, have not been met with else- 

 where : — 



Mimus patachonicus. 

 Diuca minor. 

 Sijnallaxis patagonica. 

 modesta. 



Tcenioptera murina. 

 Cnipolegus hudsoni. 

 Nothura darwini. 



So far as we can judge from Mr. Hudson's collection, the avifauna 

 of this part of Patagonia is more akin to that of the district round 

 Mendoza, in the extreme west of the Argentine Republic, than to 

 that of the vicinity of Buenos Ayres. In Mr. Hudson's collection 

 we find examples of the following species which are also met with in 

 the former, but not in the latter locality : — Mimus triurus, Progne 

 purpurea, Homorus gutturalis, Rhinocrypta lanceolata, Stigmatura 

 favocinerea, Phytotoma rutila, and Eudromia elegans. 



The Chilian element in this branch of the avifauna of the Rio 



