Key to the Species. 
A .Larger; wing over 115 mm.: crown bluish, fore- 
head red 
B . Smaller ; wing under 115 mm. 
(a) Crown purplish 
(b) Crown green : face all round red 
G. concinna, p. 46. 
G. porphyrocephala, p. 53. 
G. pusilla, p. 58. 
45 
