2. cnLOEornoNiA, 53 



several small serratious, sifuated behind tlie normal notch ; but 

 these are barely discernible even in some species of true Enphonia, 

 and in Pyrrhnphonia and Hiipophwa seem to be altogether 

 obsolete. 



The very peculiar structure of the digestive tube of the Euphonias 

 was first pointed out by Lund. Forbes's article (P. Z. S. 1880, 

 p. 144) contains an account of all that Tve yet know upon this 

 interesting subject. 



Key to tJie Genera. 



A. Upper mandible with a terminal notch. [p. 5.3, 



a. Plumage bright green 2. Chlohophonia, 



h. Plumage mostly black and yellow 3. Euphonia, p. 58. 



B. Upper mandible without anj' terminal notch. 



c. Tail rather long _. 4. Hypoph^a, p. 84. 



d. Tail short (as in Euphonia) 5. Pyebhuphonia 



[p. 85. 



2. CHLOROPHONIA *. 



Type. 



Chlorophonia, Bp. Her. Zool. 1851, p. 137 C. viridis. 



Triglyphidia, lieich. Av. Syd. Nat. pi. Ixiii. (1850) No type given. 



Acrocompsa, Cab. J. f. O. 1861, p. 88 C. callophrys. 



This group of nine species is, as Messrs. Salvin and Godman have 

 lately pointed out (Biol. C.-A., Aves, i. p. 252), barely separable 

 from Euplionia in structure, although their bright grass-green 

 colour renders them easily recognizable. The area occupied by the 

 group extends fiom South Mexico to Southern Brazil and Bolivia, 

 being nearly the same as that of Euphonia. 



Key to the Species. 



A. Cap bright green. 

 a. Bill black. 



a'. Front green. 

 a". Rump blue : 



I belly pale yellow 1. viridis, p. 54. 



I belly dark yello\\ 2. lonyipeuiiis, p. 54. 



h". Hump green 3. torrejoni, p. 65. 



V . Front yeUow : 



j interscapulium green 4. frontalis, p. 55. 



] interscapulium blue 5. 'roraim<p, p. 56. 



h. Bill yellow 6. favirostris, p. 56. 



B. Cap bright blue 7. 2>retrii, p. 5(>. 



C. Cap green, with a bright blue nuchal spot. 



c. SuperciHaries green 8. occi/iita/is, p. 57. 



d. Superciliaries yellow 9. calltiphrys, p. 58. 



* Euphonia cyaiwdorsalis, Dubois, Eev. Zool. 1869, p. 49. tab. 2, from 

 Guatemala, is a very doubtful species of this genus (c/. Berlepscb, Ibis, 1881, 

 p. 17U). The type is lost. 



