28 ARKIV FÖR ZOOLOGI. BAND M. NIO 25. 



side of Cotopaxi at an altitude of nearly 14000 feet are referred 

 to this species mostly for geographical reasons, as Salvadori's 

 diagnose is very short and unsatisfactory. The length of wing 

 of the adult female is 143 mm. 



The chick is greyish brown above, whitish on the throat 

 and the belly, more brownish across the chest. The feathers 

 which have developed on the sides and on the back are rather 

 long, regnlarily banded with brown and sandy buffish. The 

 longest tail-feathers have the comparatively immense length 

 of 53 mm. thus nearly as long as those of the mother. 



Nomonyx dominica Lin. — An adult and a young male 

 shot ^72 i^ La Carolina. 



Merganetta colombiana Des Murs. — 2 males and 2 females 

 from Rio San Pedro near Tumbaco 8000 f., June and July; 

 a young bird partly in down from nearly the same place ^7i2- 

 A young male from the same river near Cumbaya, 8000 f., ^J^, 

 is nearly in full plumage, but has still a couple of downy pat- 

 ches on the sides of the belly. A male from Rio Pita above 

 Chillo 9000 f. ^7? is moulting the tail, but otherwise in adult 

 plumage. A young male from the same locality somewhat 

 higher 9500 f. ^7i2 tias a plumage corresponding to the one 

 described in Cat. Birds B. M. (XXVII p. 463.), but the edges 

 of the feathers of the back are better termed olive grey than 

 »olive-brown », and their colour has no likeness with the same 

 of these parts in the adult bird. A young female from Rio 

 San Pedro near Amaguna 8500 f. ^73 i^ similar on the back 

 to the young male, but with the edges of the feathers rather 

 light grey. The lower parts are already chiefly fulvous, but 

 there are some few of the barred flank- feathers and several 

 of the white feathers of the low^er parts left from the juvenile 

 plumage. It is also moulting and getting new tail-feathers. 

 Finally is to be mentioned an adult female collected at Guail- 

 labamba river ^^/q, at an altitude of only 1000 f. 



Consul Söderström says, that these birds are found in 

 almost all the rapid streams in the interiör of Ecuador, but 

 that the females are seldom seen. 



The records above prove their distribution from an alti- 

 tude of 9400 to only 1000 f. The propagation seems to take 

 place towards the end of the year, and the young birds appear 



