FAMILY PARULIDAE 



267 



Females (10 from western Panama), wing 58.5-65.5 (61.1), tail 

 43.3-48.4 (46.7), culmen from base 11.8-13.6 (12.7), tarsus 16.2-19.6 

 (18.1) mm. 



Resident. Common in mangroves on the Pacific Coast of western 

 Panama from at least as far west as Puerto Armuelles, Chiriqui, east 

 as far as Puerto Aguadulce, Code, and on Isla Coiba off the coast of 

 Veraguas. On Coiba this species is confined to the coastal mangroves; 

 in this it differs from populations on other islands in Panama that are 

 often found in tall forest far from salt water. In the Aguadulce area of 

 Code there is some intergradation with aequatorialis. 



At Puerto Aguadulce on July 4, 1952, Eisenmann saw at least 5 in 

 the coastal mangroves. A male, accompanied by a female, sang a very 

 fast tit-tit-tit-tit-tee. 



The population on Isla Bolanos and possibly Isla Parida, Chiriqui, 

 about 45 km southeast of David, may merit recognition. A male and 2 

 females collected on Isla Bolanos are like aithocorys in plumage, but 

 are evidently larger (Olson, Proc. Biol. Soc. Wash., vol. 93, no. 1, 1980, 

 p. 475). Yellow Warblers are also found on nearby Isla Parida, but 

 none have been collected there. 



DENDROICA PETECHIA IGUANAE Olson 



Dendroica petechia iguanae Olson, 1980, Proc. Biol. Soc. Wash., 93(2), pp. 475- 

 476. (Isla Iguana, Los Santos Province, Panama.) 



Characters. — Male nearest aithocorys, but brown of head much 

 darker, less rufescent; green of dorsum darker, less yellowish, breast 

 and particularly the lower belly more densely streaked with chestnut; 

 yellow of underparts and tail darker, appearing dingy and greenish. 

 Female like aithocorys, but tending to be more heavily streaked, yellow 

 of underparts dingier, as in the male. 



Measurements. — Males (7 from Isla Iguana), wing 61.6-67.4 

 (65.0), tail 47.2-52.9 (50.1), culmen from base 12.4-14.4 (13.4), tar- 

 sus 17.1-19.8 (19.1) mm. 



Females (4 from Isla Iguana), wing 61.5-62.6 (62.0), tail 47.4-49.2 

 (47.8), culmen from base 12.2-12.9 ( 12.5) , tarsus 17.8-20.0 (19.0) mm. 



Resident. Found only on Isla Iguana, Los Santos, a small island 

 probably less than 1 km 2 in area, lying approximately 6 km from the 

 mainland, about 7 km east-northeast of Pedasi and 18 km north of 

 Punta Mala, on the eastern coast of the Azuero Peninsula (7°38'N, 

 80° W) . Iguana is the only offshore island along the eastern and south- 



