»S92J CllERRiK, /,/.</ of Birds of Sa/i yosi', Cos/a Rica. 2'i 



3S. Vireo philadelphicus. — Tlie earliest arrival I have noted was on 

 Oct. Ji, 1S90. 



39. Vireo flavifrons. — The first arrival in 1S90 was noted on Oct. 4. 

 This and the preceding species are rare birds about San fose. 



40. Cyclorhis flavipectus subflavescens. — Common. A sweet ami tire- 

 less singer tor about five months in the rear, from February to Julv, dur- 

 ing the breeding season, usually concealing itself amid the dense foliage 

 at the top and middle of the low trees bordering the fields, where, out of 

 sight of prying eves, it pours forth melody loud and clear. 



41. Arbelorhina cyanea. 



4J. Arbelorhina lucida. — These two species of Blue Creepers are only 

 transient visitors in the neighborhood of San Jose, appearing early in 

 September and lingering until December. They are most abundant dur- 

 ing October, feeding together in small flocks in the 'jocote' trees, 

 {Spofiditis cdiilis). It is only during the time this plum-like fruit is 

 ripening that the biids ai-e found. 



The males of the two species are known under the name -Rey de Picu- 

 dos', while the females are only 'Picudos'. 



43. Euphonia. — Although I have only taken five of the ten Costa Rican 

 species oi Euphonia in the vicinity of San Jose, three of the other forms 

 are frequently to be seen for sale in the market, and I have thought it 

 might not be out of place to present not only a list of all the Costa Rican 

 species but also a key by which the different species may be known. 

 Below is the key and following it are my notes on the different species. I 

 might here add that I have never seen examples of either E. gnatho or 

 E. laniirostris. 



Key to the Species of Euphonia found in Costa Rica. 



a. Size relatively small, wing not more than 2.25 inches, 

 usually less. 

 i>. Outer tail-feathers only faintly (if at all) inarked with 

 white on inner webs, and under tail-coverts not whitish. 

 c. Crissum chestnut. ....... gouldi. 



c' . Crissum yellowish. ...... luieicapilla. 



b' . Outer tail-feathers distinctly marked with white on in- 

 ner webs, or under tail-coverts whitish. 

 c. Middle of belly and crissum white or whitish. . . niinuta. 

 c'. Middle of belly and crissum yellow or yellowish. . ajfinis. 



a' . Size relatively large, wing more than 2.25 inches. 



b. Crissum and under tail-coverts grayish or white with 



darker base. ......... anncB. 



b' . Under tail-coverts not grayish or white. 



c. Middle of belly white and outer tail-feathers marked 

 with white on inner webs (occupying the terminal third 

 in adult males, sometimes rather faintly indicated in fe- 

 males or ^oung). 



