NOVITATES ZOOLOOICAE XXV. 1918. 



391 



a'. Hindwing with vein 8 closely approximated to the 

 cell and vein 7 throughout, often becoming coin- 

 cident with 7 towards the apex, 

 a'. Hindwing with vein 8 concealed in a fold, veins 

 3, 4 coincident, 5 from lower angle of cell or 

 stalked with 3 ..... . 64. Aegeriadae 



b'. Hindwing with vein 8 not concealed in a fold, 



veins 3, 4 not coincident, 5 separate . . Co. Tinaegcriadae 



b'. Hindwing with vein 8 not closely approximated to 

 the cell and vein 7 throughout, 

 a'. Hind tibiae with more or less developed whorls of 

 bristles or scales at the origin of spurs, the 

 tarsi always with more or less developed bristles 

 at the apex of joints, the hindlegs, in repose 

 erected over back or projecting laterally ; the 

 palpi slender, acuminate at tip, usually long 

 and excurved, often diverging, sometimes 

 short and porrect ..... 75. Heliodinidae 



b'. Hind tibiae without whorls of bristles or scales 

 at origin of spurs, the tarsi without bristles at 

 the apex of the joints, 

 a'". Palpi long, upcurved, the terminal joint 

 acuminate at tip, usually acute (rudimentary 

 in some Blastobasidae). 

 a". Forewing with veins 7, 8 separate . . 63. Stenomidae 



b". Forewing with veins 7, 8 stalked or coincident, 

 a'-. Hindwing with vein 8 connected with the 

 cell by a bar. 

 a'^. Hindwing with vein 5 approximated to 



6, veins 6, 7 separate and parallel . 61. Ethmiadae 



b". Hindwingwith vein 5 approximated to 4. 

 a". Hindwing with vein G absent. 



a^*. Forewing with vein 6 absent, 7, 8 



coincident .... 56. Physoptilidae 



b'*. Forewing with vein 6 present, 7, 8 



coincident .... 57. Metachandidae 



b". Hindwing with vein 6 present ; veins 

 6, 7 generally approximated or 

 stalked, the termen usually sinuate 

 or excised below apex, 

 a''. Forewing with vem 2 approxi- 

 mated to 3* . . . . 58. Dichomeridae 



bi=. Forewing with vein 2 remote from 3 59. Uzuchidae 



h^. Hindwing with vein 8 not connected ■ 

 with the cell by a bar. 

 a''. Hindwing with veins G, 7 separate and 

 parallel, veins 2 to 4 not separate and 

 parallel. "^ 



a" Forewing with costal stigma, veins 2 

 to 5 closely approximated, 4, 5 

 ' sometimes stalked ; hindwing with 



veins 3, 4 stalked and 5 from a point 

 or stalked with them, or 3, 4 coin- 

 cident and stalked with 5, or 4, 5 

 stalked and 3 separate ; the palpi 

 rudimentary in the Pigritia group 62. Blastohasidae 



* The approximation of veins 2 and 3 is not very constant in the Dichomeridae, but their 

 remoteness is constant in the Uzuchidae. 



26 



