586 Bulletin American Museum of Natural History. [Vol. XXXVI, 



than in the female of cyaneus, straw-yellow rather than canary-yellow. More 

 closely related to Cyanerpes cyaneus gigas (Bangs & Thayer) of Gorgona Island off 

 the Colombia coast, which it resembles in the pale wing-Hning, but wings and tail 

 averaging longer, blue of the male less purple, particularly on the rump, the females 

 not so dark above or so yellow below. 



Although Cyanerpes cyaneus had not been recorded before from the 

 mainland of the Pacific Coast of South America, we found this form not 

 uncommon from Buenaventura southward. 



Buenaventura, 2; San Jose, 2; Los Cisneros, 2; Tumaco, 1; Barba- 

 coas, 6. 



(4081) Cyanerpes caerulea microrhyncha {Berl). 



Coereba ccerulea microrhyncha Berl., J. f. O., 1884, p. 287 (Bucaramanga, Col.). 



Ccereba ca^ulea Sol. & Salv., P. Z. S., 1879, p. 497 (Remedios; Medellin). 



Cyanerpes ccerulea microrhyncha Hellm., P. Z. S., 1911, p. 1097 (N6vita; San 

 Joaquim; Rio Cajon). 



Cyanerpes coiruleus mierorhynchus Allen, BuU. A. M. N. H., XIII, 1900, p. 173 

 (Bonda; Minca; Onaca; Las Nubes). 



Inhabits the Tropical Zone but appears to be absent from the Cauca 

 Valley. Fourteen specimens from the Pacific coast agree with twelve native- 

 made skins from the vicinity of Honda. A single female from Buena Vista 

 is decidedly darker, bluer green than Magdalena Valley birds and has a 

 slightly longer bill. 



Quibdo, 1; Juntas de Tamana, 1; Noanama, 6; Barbacoas, 6; near 

 Honda, 12; Buena Vista (above Villavicencio), 1 (?). 



(4086) Chlorophanes spiza exsul Berl. & Tacz. 



Chlorophanes spiza exsul Bebl. & Tacz., P. Z. S., 1883, p. 543 (Chimbo, Ecuador) ; 

 Hellm., P. Z. S., 1911, p. 1096 (Noanamd,; N6vita). 



Specimens from the Pacific coast region agree with others from Ecuador 

 and are clearly to be referred- to this form, which, however, very closely 

 resemble true spiza. From lower Orinoco, Trinidad, and Cayenne birds, 

 the west Colombian and west Ecuadorian specimens differ mainly in being 

 slightly smaller with smaller bills. The Ecuadorian bird averages slightly 

 greener, but the difference is wholly overlapped by individual variation. 

 The Central American form, C. s. guatem.alensis is decidedly greener than 

 exsul or spiza, but has the bill as large as in exsul while the wing (in specimens 

 from Costa Rica, Chiriqui and Panama) is little if any longer than in C. s. 

 exsul. 



It is interesting to observe that a specimen from Cocal (alt. 4000 ft.) 



