182 B. NKUMOEGEN AND H. G. DYAR. 



Vein v' of secondaries arising apparently from discal cross-vein; sub- 

 costa running close to radius beyond cell, or even joining it. 



DREPANID^. 



Branches of radius of primaries all free THYBID^. 



Cubitus of primaries apparently 3-braucbed. 

 Veins V3 and viii arising independently. 



Body slender, wings fragile, finely scaled | GEOMETRID^. 



( BREPHID^. 

 Body larger and robust. 

 Vein Vi of secondaries joined to radius before apex of cell. 



CYMATOPHORID^. 



Vein Vj joined at or beyond end of cell NOTODONTID^. 



Veins V3 and viii coalesced at base DIOPTID^. 



Secondaries with a distinct inter-costal cell; wings usually elongate. 



SPHINGID^. 



Family NOTODONTID^. 



/Synopsis of Subfamilies and Genera. 



Outer margin of primaries excavate below apex ; accessory cell on a long stalk. 



APATELODIN^. 

 Outer margin entire, or at most moderately excavate between the terminations 

 of the nervules. 



Antennae of % bipectinated to the tip or simple NOTODONTIN^. 



Antennse of % with distinct pectinations. 

 Primaries with an accessory cell. 



A tufted tooth on internal margin of primaries Notodoula. 



Internal margin entire. 



Pectinations of antennae long. 



Thorax with large central tuft Wa<lata. 



Thorax un tufted H.yparpax. 



Pectinations moderate or short. 



Costa of primaries straight, apex rectangular SyuiUierista. 



Costa convex, apex rounded Merice. 



Primaries without accessory cell (rarely a small one in one Cerura), 

 Internal margin entire. 



Vein 5 (vz) of secondaries distinct C^erura. 



VeiJi 5 (va) of secondaries weak or absent. 



Tip of abdomen with a brush-like tuft flolaloplia. 



Tip of abdomen simple | Glupliisia. 



A tufted tooth on internal margin of primaries l*lieo!<»ia. 



Antenufe of % simple, without distinct pectinations. 

 A tufted tooth on internal margin of primaries. 



Accessory cell absent Lopliodoiita. 



Accessory cell present ■ Lopliopteryx. 



Internal margin entire. 



Accessory cell present Dafaiia. 



Accessory cell absent JVystalea. 



