VoI 'i9^ XV ] Bangs and Noble, Birds of Peru. 447 



Measurements. Type adult cf, wing, 148; tail, 98; tarsus, 23; ex- 

 posed culmen, 19. Topotype adult 9, No. 80022, wing, 143; tail, 95; 

 tarsus, 20; exposed culmen, 16. 



Remarks. This very pale form was a common bird along the streams 

 that cross the coastal deserts. No specimen among the numbers we have 

 examined from various parts of South America approach our birds in the 

 general pallor of the under parts, and the form appears to be a well marked 

 subspecies. 



There is some probability that the type of Zenaida hypoleuca Bp. col- 

 lected by Capt. Kellett and Lieut. Wood, now in the British Museum, did 

 not really come from the Pearl Islands, but we hardly believe even so that 

 it represents the local desert form we have just named. 



Eupelia cruziana (Prev. & Knip.). Five adults, both sexes, Huanca- 

 bamba, August. 



A common bird in the cultivated lands about Huancabamba, but not 

 observed elsewhere. 



Leptotila decolor Salvin. Eight specimens, one immature 9 and adults 

 of both sexes, Bellavista and Huancabamba, August and September. 



Frequently met with throughout the whole region traversed, except at 

 the higher altitudes. 



Psittacidse. 



Ara militaris militaris (Linn.). Four adults, both sexes, Bellavista, 

 September. 



Scattered flocks of these Aras passed each morning and evening up or 

 down the Marafion. The birds chattered to each other as they flew. 

 Their call was deep, and not unpleasant, very different from the raucous 

 crys of most parrots. The flocks generally consisted of three or four 

 individuals. Never more than seven birds were seen in a single flock. 



Aratinga rubrolarvatus Massena et Sauance. One immature 9 , 

 Sullana, July 29. This skin has no red whatever on the head or the bend 

 of the wing; the small under wing-coverts are however, mostly red. It 

 resembles immature examples of A. finschi (Salv.), but is darker, less yel- 

 lowish green, with the under surface of the wing darker, more olive, less 

 yellowish, and has a much larger bill. 



This Paroquet is very abundant along the river valleys which cross the 

 coastal deserts. Flocks of several thousand individuals were often seen 

 filing up the Chira River during the early evening. 



Aratinga frontatus Cab. Seven adults, both sexes, Perico and Taba- 

 conas, September. 



A bird of the subtropical arid lands and the arid valleys of the Chinchipe 

 and Marafion. It entirely replaces A. rubrolarvatus in the hills, and 

 eastern river valleys where it is common in the thickets of acacias and 

 cacti. 



