346 PEINGILLID^. 



Mem. Bost. Soc. N. H. i. p. 551 " ; Lawr. Aim. Lyc. N. Y. ix. p. 103 " ; Frantz. J. £. Om. 

 1869, p. 301"; Nutting & Ridgw.Proc. U. S. Nat. Mus. vi. p. 400". 

 Nigra cyaneo vix tincta ; fconte, genis et tectricibus alarum minoribus cyanesceatioribus, rostro et pedibus 

 nigris. Long, tota 6-0, als 3-2, caudae 2-7, rostri a rictu 0-8, tarsi 0-9. (Descr. maris ex Orizaba, Mexico. 



Mus. nostr.) 

 ? omnino brunnea, subtus pauUo dUutior, aUs et cauda satutatioribus. (Desfrr. feminse ex Chootum, Guate- 

 mala. Mus. nostr.) 



Hah. Mexico i, Orizaba {Salle 2), Santecomapam 3, Playa Vicente * (JBoucard), Penula 

 {Sumichrast ^^) ; British Honddbas {Blancaneaux) ; Guatemala, Yzabal s, Choctum 

 {0. S.); HoNDtEAS, San Pedro [G. M. Whitely «) ; Nicaeagua, Chontales (Janson^ 

 Los Sabalos {Nutting i^) ; Costa Eica {v. Frantzius ^^), Turrialba, Angostura {Car- 

 miol ") ; Panama, Santa Fe ^ Calovevora ^, Boquete de Chitra », Bugaba » {Arce). 



Guimca concreta does not appear to be found northwards of the hot forests of the 

 State of Vera Cruz in Mexico, the limit of its range in altitude being, according to 

 Sumichrast, about 2500 feet i°. In Guatemala we found it always in the heavily-forested 

 districts at the sea-level near Yzabal ^ and at Choctum, which is about 1200 feet 

 above the sea. In Nicaragua Mr. Nutting says it is abundant near Los Sabalos, 

 especially in a plantain-grove, and also in a patch of high marsh-grass ^^. 



The typical Mexican form of this species is easily recognized from the Panama bird, 

 G. cyanoides, by its much darker tint, in which there is but a slight blue shade, and the 

 forehead and cheeks are scarcely bluer than the rest of the plumage. Guatemalan 

 specimens, and all from various parts southwards as far as the province of Veraguas, are 

 somewhat intermediate in character ; the blue tint, so distinct in G. cyanoides, is decidedly 

 apparent, and the forehead and cheeks are obviously blue, though not so much so as in 

 the southern form. When we reach Panama itself, whence the type of G. cyanoides 

 was obtained, the difference in the amount of blue of the plumage is tolerably obvious ; 

 moreover, the distinction seems sufficiently marked and abrupt to justify our separating 

 Central-American and Panama specimens. But we should not be surprised to find 

 either that the former can be distinguished from the blacker Mexican bird or that all 

 these races merge into one species. For the present we place the Central- American 

 and Mexican birds under the name G. concreta, and keep C. cyanoides of Panama 

 distinct ; and this has been the usual practice up to now. 



3. Guiraca cyanoides. 



Coccoborus cyanoides, Lafr. Rev. Zool. 1847, p. 74 \ 



Cyanoloseia cyanoides, Bp. Consp. Av. i. p. 503 " ; Lawr. Ann. Lye. N. Y. vii. p. 397 \ 

 Guiraca cyanoides, Scl. & Salv. P. Z. S. 1864, p. 353*; 1879, p. 506 ' ; Berlepsch & Taez. P. Z. S. 

 1883, p. 549 \ 



G. concretm similis, sed omnino eyanescentior ; fronte, genis et tectricibus laete cyaneis. (Deso. maris ex 

 Lion TTill, Panama. Mus. nostr.) 



Hah. Panama 12, Lion Hill {M'Leannan^^).~Co\.OMSiK^; Ecuador S- 



