Bangs Birds from Costa Rica and Chiriqui. 



109 



little known genus from Irazu, and wrote me that he thought it represented 

 a new form. 



Later in the season May, 1905 Mr. Ridgway visited Irazu himself and 

 had the pleasure of seeing the species in life, his companion, Don Anastasio 

 Alfaro, succeeding in taking one example, which has been kindl) r lent me.* 

 The species lived on Irazu in brushwood in ravines above timber-line. 

 There is no cane (bamboo) on Irazii. It was not uncommon, though very 

 hard to shoot. 



The Irazu wren is quite distinct from the only other known member of 

 the genus, T. broumi of the Volcan de Chiriqui, wholly lacking the strong 

 ruddy or chestnut coloring of the lower back, rump, tail coverts and flanks 

 of that species ; it is also larger. 



Cyanolyca blandita sp. nov. 



Type from Volcan de Chiriqui, 9,000 feet altitude, c? adult. No. 9324, 

 coll. of E. A. and O. Bangs. Collected June 2, 1901, by W. W. Brown, Jr. 



Characters. Similar to Cyanolyca argentigula (Lawr.) of Costa Rica and of 

 the same size, but throat constantly pale blue flax flower blue and 

 pale colored band across head narrower and blue throughout, darker on 

 sides of head, paler in middle. In C. argeniigula the throat is silvery 

 white, sometimes shaded with lavender gray ; the band across head is 

 much wider, nearly white in middle and pale blue at the sides. 



Nestlings of the two forms are easily distinguished; even in this stage 

 of plumage C. argentigula. having a silvery and C. blandita, a blue throat. The 

 band across the head is narrower and less definite than in the adults, but 

 it is bluish in C. blandita and whitish in C. argentigula. 



MEASUREMENTS. 



At the time I worked over the collections made in Chiriqui by Brown I 

 did not have adequate material from Costa Rica and referred the Chiriqui 

 bird to C. argentigula. The splendid series in the Underwood collection 

 including adults taken at various seasons of year (January, February, May, 

 June, and September), and nestlings, compared with the equally good one 

 from Chiriqui, at once proved the incorrectness of my earlier identification, 

 and showed the forms from the two regions to be distinguishable at a 

 glance. 



Vireolanius pulchellus viridiceps Ridg. 



In the Underwood collection is one fine adult male of this subspecies 

 from Pozo Azul, western Costa Rica, taken June 10, 1903. Thus still an- 



*See Robert Ridgway, A Winter with the Birds of Costa Rica, The Condor, Vol. VII, 

 No. 6, November-December, 1905, p. 159. 



