CHETSOTIS. 585 



were long considered the same. They differ in the colour of the head, that of 

 C. guatemalm being tinted blue, that of C. virenticeps (as its name implies) green. 



C. guatemalm does not seem to be a common bird in Mexico, and we have only seen 

 a few specimens from the State of Vera Cruz, Sumichrast, however, states that it 

 occurs near Chimalapa, which we suppose to be the village of that name on the Isthmus 

 of Tehuantepec ^^. In Guatemala we found it to be very local, but common in the 

 lowland forests of Vera Paz, and, when staying at Choctum, where it is called by the 

 natives " Cho-cho," we secured several specimens from flocks which frequented the 

 edge of the small patch of open savanna at that place. These flocks commence flying 

 from tree to tree soon after daybreak, and in the evening they are again restless and 

 noisy. As usual with all Parrots, a flock consists of a number of birds which keep in 

 pairs both when at rest and when flying about. 



Southward of Guatemala the only certain localities for the occurrence of this species 

 are Omoa, where Leyland obtained the type, and San Pedro, whence Whitely sent 

 specimens *. Mr. Nutting's record of it in Nicaragua is wrong, so Mr. Ridgway tells 

 us, and refers to a young specimen of C. auropalUatus. 



2. Chrysotis virenticeps. 



Chrysalis pulverulenta, Lawr. Ann. Lye. N. Y. ix. p. 131 (nee Gm.) \ 



Chrysotis guatemalce, Frantz. J. f. Orn. 1869, p. 365^; Lawr. Ann. Lye. N. Y. ix. p. 145'; Salv. 



P. Z. S. 1870, p. 214-'; Ibis, 1870, 113'; 1871, p. 98 (partim) \ 

 Amazona guatemalcB, Zeledon, An. Mus. Nae. Costa Rica, 1887, p. 134''. 

 Chrysotis farinosa, Lawr. Ibis, 1871, p. 349 (partim) " ; Boueard, P. Z. S. 1878, p. 46°. 

 Chrysotis virenticeps, Salvad. Cat. Birds Brit. Mus. xx. p. 380 ". 



C. guatemnlcB similis, sed pileo toto viride nee csBruleo lavato differt. (Descr. maris exempl. typ. ex Bugaba, 

 Panama. Mus. nostr.) 



Hab. Costa Eica, Cervantes (v. Frantzivs ^, Carmiol ^ ^ ^), Angostura {Carmiol), San Carlos 

 {Boueard % San Mateo {Zeledon ^) ; Panama, Bugaba, Volcan de Chiriqui {Arc6^). 



C. virenticeps is the Costa Eica and Chiriqui form of C. guatemalce, and was separated 

 from that bird by Count Salvadori in his Catalogue of the order ^^. The difference is 

 slight, but apparently constant, and consists in the colour of the head being green 

 instead of distinctly blue. 



It has been noticed by most of the Costa Eica collectors, and M. Boueard found it to 

 be common at San Carlos in February ^. 



3. Chrysotis inornata. 



Psittacus pulverulentus, Lawr. Ann. Lye. N. Y. viii. p. 11 \ 



Chrysotis farinosa, Lawr. Ibis, 1871, p. 350 ' ; Scl. & Salv. P. Z. S. 1879, p. 538 \ 



Chrysotis inornata, Salvad. Cat. Birds Brit. Mus. xx. p. 381 *. 



Viridis, pileo postieo vix cseruleo lavato, plumis omnibus cervicis posticse nigro marginatis, genis et corpora 

 subtus paUidiore viridibus margiue alarum et speculo alari coccineis, remigibus nigris ad basin viridibus, 



BIOL, CBNTK.-AMBR., Aves, Vol. II,, February 1897. 74 



