192 Proceedings of the Biological Society of Washington. 



the lesser wing-coverts are decidedly gray like the back, while in the other 

 they are greenish like the rest of the wing. Such asymmetrical coloration 

 is so frequent in cases of this character that we feel safe in ascribing it to 

 abnormal development. It is interesting to note that this abnormal 

 development follows the same course as is normal in the far-removed 

 Pijrromorpha rufiventris. 



Specimens examined. — Mexico: Buena Vista, Vera Cruz, 1; Orizaba, 1; 

 Mirador, Vera Cruz, 1; Teapa, Tabasco, 4; Xcopen, Quintana Roo, 1; 

 unspecified, 1. Guatemala: Quirigua, l;Potrero, 1; Cajabon, Vera Paz, 

 1; Choctum, Vera Paz, 1; unspecified, 6. British Honduras: Manatee 

 Lagoon, 3; Toledo District, 7; Toledo, 2. Honduras: Julian, 1 ; unspecified, 

 1. Nicaragua: Los Sdbalos, 1; Greytown, 1. Costa Rica: Guapiles, 3; 

 Cuabre, 2; Rio Sicsola, 1; Carrillo, 4; El Hogar, 1; Peralta, 1; Val, 2; 

 Angostura, 1; Naranjo (Juan Vinas), 1; Pacuarito, 1; Jim6nez, 2; Bonilla, 

 4; Guayabo, 3; Guayabal, 2; Tenorio, 1; La Vijagua, 6; Matina, 1; unspeci- 

 fied, I. Total, 73. 



