54 Psyche [Sept.-Dee. 
extensively blackish. Eyes bare. All posterior cells 
open Hemichrysops. 
Third antennal segment consisting of seven or eight 
divisions 4. 
4. Eyes bare. Face not produced nor snout-like. Pro- 
boscis moderately long. First posterior cell closed. 
Fork of third longitudinal vein generally with an 
appendix Escnbeckia. 
Eyes hairy. Face more or less produced and snout-like. 
Proboscis often very long 5. 
5. Third antennal segment of seven divisions, the first six 
bearing long finger-like processes 6. 
Third antennal segment without finger-like processes 7. 
6. First divisions of third antennal segment bearing proc- 
esses only on the dorsal side; basal process longer 
than the others Elaphella. 
First divisions of third antennal segment with processes 
on both the dorsal and ventral sides; processes all 
about equally long Pityocera. 
7. First and fourth posterior cells closed and petiolate. 
Wings often with dark markings Scione . 
First posterior cell closed or narrowly open, the fourth 
always open. Wings hyaline or smoky, never with 
prominent markings 8. 
8. Coxae and femora slightly pilose or nearly bare Fidena. 
Coxae and femora densely covered with long hairs Melpia. 
9. First antennal segment more or less elongate, not less 
than one-fourth of the length of the third segment. 
Subepaulet bare, without macrotrichia. Body with- 
out green metallic scales 10. 
First antennal segment short, about as long as thick; if 
longer, the body bears some green metallic scales. 
Abdomen broad and short 11. 
10. Abdomen broad and short. Third antennal segment 
slender, never with a basal process or tooth, at most 
somewhat widened or slightly produced near the 
base Diachlorus. 
Abdomen slender, narrow and long. Third antennal 
segment with or without a tooth or finger-shaped 
process near the base Acanthocera. 
11. First antennal segment greatly inflated. Palpi very 
