ARKIV FÖH ZOOLOGI. 



BAND 14. N:o 25. 



A Coiitribution to the Oriilthology of Ecuador. 



By 



EINAR LÖNNBERG and HIALMAR RENDAHL. 

 Read January 25*^ 1922. 



The folloTvdng paper is based on collections, which at 

 several occasions ha ve been presented to the R. Nat. Hist. 

 Museum in Stockholm by Mr. Ludo\t:co Söderström, Royal 

 Swedish Consul in Quito. In the year 1921 the Museum re- 

 ceived 1836 specimens, and some years ago a large and very 

 valuable collection of Colibris was presented by Consul Söder- 

 ström and t hen classified and named by Lönnberg. His 

 report on this is included in the present paper. About 409 

 different races of resident birds are represented in these collec- 

 tions not counting 26 (or 27) migrants. 



The specimens, which all are in a very good condition, 

 have been collected chiefly in the northern parts of Ecuador. 

 The greater number of them are from the western side of the 

 Andes and the central plateau, but there are also a good many 

 from the eastern slopes as well. By this we have been able 

 to State, that, as a rule, the fauna with regard to the birds 

 as well is different on both sides of the mountain-chain, and 

 in some instances we have also had the oppurtunity of pointing 

 out the differences betw^een the representatives of the same 

 species on the eastern and western slopes of the Andes, and 

 to describe some new forms. 



The birds are all carefully labelled, and it is especially 

 of very great interest and scientific value, that Consul Söder- 

 ström in every case has stated at which altitude the different 

 specimens have been collected. By this it has been possible 



Arkiv för zoologi. Band 14. N:o 25. I 



