190 VIEEONID^. 



Eab. NoETH Ameeica, Texas ^^i'^. — Mexico {SalU^), Monterey (Couch^^), Mazatlan 

 (Grayson^), Tres Marias (Forrer), Eosario [Xantus^), temperate region of Vera 

 Cruz {Sumichrast'^'^), Playa Vicente {Boucard^), Tapana and Santa Efigenia 

 [Sumichrast % Northern Yucatan (G^a^mer) ; Guatemala [Constancia^), Ketalhuleu, 

 Chisec {0. S. & F. B. G.) ; Nicaeagua, San Juan {Sarruel ^) ; Costa Rica ^^ ^o^ San 

 Jose {v. Frantzius ^), Atenas [Cooper ''), Volcan de Irazu {Bogers) ; Panama {Bell ^), 

 Mina de Chorcha ", Bugaba ", Chitra ", Cordillera de Tole lo, Santa Fe lo {Arci), 

 line of railway (M'Leannan^), Obispo station (0. S.), Paraiso station (Hughes). — 

 Colombia ; Ecuadoe ; Peeu ^^ ; Uppee Amazons. 



The most recent opinion as to the position of this species is that given by 

 Mr. Eidgway^^, who treats it as an imperfectly segregated race of V. agilis, thus 

 diiFering from Dr. Finsch, who placed the latter name as a synonym of V. olivaceus. 

 The relationship of V. agilis to the other forms is somewhat intermediate, as it has the 

 olive crissum and flanks of V. flavoviridis, but to a less extent, and like V. olivaceus 

 shows a whiter belly. Compared with V. olivaceus, V. flavoviridis is obviously distinct, 

 and may be so treated in this work. 



Though this species has only just a footing in the United States, having been found 

 on the Texas side of the Eio Grande, near Fort Brown ^^, it seems to be generally 

 distributed throughout Mexico and Central America, having been observed, as will b^ 

 seen above, in nearly every section of this wide area. In South America, too, it has a 

 wide range, from Colombia to Peru ^^, and eastwards to Yquitos on the Amazons. From 

 the last-mentioned place we have a single female specimen, sent us by Mr.Whitely, which 

 was shot on the 16th October, 1878. It may thus well be that the birds observed in the 

 far south are there during the winter season only. In the north it has been observed 

 late in August at Fort Brown ^^, and at Mazatlan from April to August. Grayson says 

 it is not uncommon in the mangrove swamps near the last-named city, but that he did 

 not see any after the breeding-season ^. 



Mr. A. Forrer has recently sent us a single skin of a male bird which he shot on 

 4th May, 1881, on one of the Tres Marias Islands. This, though generally resembling 

 the usual form of this bird, has but the faintest indication of the light superciliary 

 mark. In the absence of any other character, and having only one specimen for 

 comparison, we do not think more notice should be taken of it at present. 



Eegarding the range in altitude of V. flavoviridis, Prof. Sumichrast tells us he 

 observed it, at a height of 4600 feet, in the mountains of Orizaba ^^ ; but our Guatemalan 

 specimens are all from a lower level. In Panama, too, whence Cassin's original 

 specimens were obtained, it occurs in places but slightly elevated above the sea. 



Nothing is known relative to the breeding of this species. 



