Lepidoptera. 49 



*. Winged 3 



Wingless 55 



3. Hind wings with four or five radial veins (PI. 9, fig. 199), with at least ten veins 



besides anals, more than six veins arising from the discal cell; wings of 

 similar shape, the membrane with minute spines (PI. 9, fig. 200) ; f orewing 



with a jugum. (JUGATE, MICROPTERYGOIDEA.) 4 



Hind wings with only one free radial vein (PI. 9, fig. 202) (very rarely two); 

 with at most six veins arising from the discal cell; fore and bind wings dis- 

 similar in shape, the frenulum very often present. (FRENATJ3.) 5 



4. Wings hardly wider than their fringe; expanse about half an inch; tibial spurs 



present. (Eriocephala, Epimartyria) (PI. 9, fig. 199) .ERIOCEPHALID^E 



Wings ample, fringe narrow; expanse over one inch; tibial spurs wanting. 



(Sthendpis, Hepialus.) HEPIALnXE 



5. Wings entire, not cleft nor divided into finger-shaped divisions, rarely the fore 



wings moderately cleft 6 



Wings, especially the hind ones deeply cleft, or divided into plume-like divisions 

 (PI. 9, figs. 203, 204). Feather-wing moths 7 



6. Inner margin of fore wing and costal margin of hind wing narrowly folded and 



interlocking; fore wings at least four times as long as wide; at least the 

 base of the hind wing, and usually a great part of the wings, hyaline; brightly 

 colored, diurnal moths. (Melittia [M. satyriniformis, Squash-borer], Sesia 

 [S. tipuliformis, Currant-borer; S. rutilans, Strawberry crown-moth], Bem- 

 becia [B. marginata, Blackberry crown-borer], Sanninoidea [S. cxitiosa, 

 Peach-borer]) (PL 10., figs. 221, 229, 232). (MGERIIDM.) . . .SESto-S 

 Wings not interlocking at middle of margin, very rarely transparent, and if so, 

 with broader fore wings 8 



7. Fore wings divided into two plumes, hind wings into three; small, delicate 



moths, usually prettily colored. (Oxyptilus, Platyptflia, Pterophorus) 



(PI. 9, fig. 203; PI. 10, figs. 225, 231) PTEROPHORIIXE 



Each wing divided into six plumes; a small silvery white moth. (Orneodes) 

 (PI. 9, fig. 204) ORNEODIDjE 



8. Hind wings much broader than their fringe, never spear-shaped, and rarely 



trapezoidal with produced apex 9 



Hind wings tapering toward base and apex, without marked anal angle, or 

 notched below the apex and trapezoidal; the fringe wider, or almost as wide, 

 as the wing 58 



9. Underside of hind wing with a double series of enlarged and divergent scales 



along the cubital vein AgdistJnee of the PTEROPHORIDyE 



No such specialized scales 10 



10. Fore wings with two anal veins attaining the margin (PI. 9, fig. 205) 11 



Fore wings with only one anal vein attaining the margin, the first anal vestigial 



or represented by a fold and the third at most by a short spur (PI. 9, fig. 

 202) 20 



11. Antennae plainly knobbed; hind wing with a large praecostal area; large showy 



moths of butterfly- or skipper-like appearance. (Castnia.). .CASTNIID.ffi 

 Antennae tapering to tip 12 



