FAMILY PSITTACIDAE 89 



and feathers at the side of the mandible dull yellow ; rest of under 

 surface yellowish green. 



Female, edge of the wing, and some of the outer lesser wing coverts 

 adjacent to the black shoulder, red, the rest green; yellow of under 

 wing coverts more extensive. 



Immature, like the female, but with red of forecrown mixed with 

 green. 



In the original publication Cory described the bill as "yellowish at 

 the tip, dark at the base; feet dark (blackish in dried skin)." Watson 

 noted the following on the label of a female taken at Boquete ; "Iris 

 ash color, feet black, bill bone color." 



Measurements. — Males (3 from Costa Rica) wing 119.3-122.0 

 (120.2), tail 43.2-47.5 (45.1), culmen from cere 16.2-17.0 (16.5), 

 tarsus 12.0-12.5 (12.2, average of 2) mm. 



Females (3 from Panama and Costa Rica), wing 110.0-115.5 

 (112.3), tail 41.2-43.5 (42.1), culmen fom cere 15.0-16.0 (15.4), 

 tarsus 10.6-12.0 (11.4) mm. 



Rare in western Panama, status uncertain. Two records : Chiriqui 

 (Boquete) ; Bocas del Toro (Cocoplum). 



The Rothschild collection in the American Museum of Natural His- 

 tory has a female taken by H. J. Watson at Boquete, Chiriqui, Febru- 

 ary 17, 1905, marked as from "4000 feet." The only other specimen 

 from Panama is one, also in the American Museum, collected by 

 R. R. Benson at Cocoplum, Bocas del Toro, November 5, 1927. This 

 bird is marked female with a query. With a wing length of 110 mm. 

 it seems certain that it is of that sex. 



This bird, named by Cory from 4 specimens collected by H. C. Ra- 

 ven near Limon, Costa Rica, in the latter part of May 1910, is little 

 known. Slud (Bull. Amer. Mus. Nat. Hist., vol. 128, 1964, p. 120) in 

 Costa Rica, records 1 taken in October 1922, by Austin Paul Smith 

 at Santa Cruz, 1,300 meters elevation on Volcan Turrialba. Slud saw 

 the species on two occasions in October 1953, at Matriculas de Pavones 

 on a ridge (900 meters) above the valley of the Rio Reventazon. 



In Peters' Check-list of Birds of the World (vol. 3, 1937, p. 209) 

 costaricensis is included as a geographic race of Touit dilectissima. 

 There is no question that the two are closely allied, but the difference 

 in the forehead — red in the more northern bird, blue in dilectissima — 

 appears clear cut. Also in the specimens of costaricensis seen the 

 middle upper tail coverts reach nearly to the end of the tail, while in 

 the more southern bird these feathers are definitely shorter. In view 



