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pressed, third joint short; antennae shortly ciliated. Thorax roughly 
scaled; abdomen smoothly, without crests. Legs smoothly scaled, 
without armature on the tibiae. Wings broad, acute at the apex and 
produced at the outer margin at Ms on both wings. Typical noctuid 
neuration; discal vein atrophical, accessory cell present on fore wings, 
vein Ms of hind wings from below middle of discal vein. 
Fig. 3. Arytrura musculus M é n. 
Uncus very long, thin, pointed at the end, harpes absent, valves 
large and long, narrow at base, broadened and rounded distally; saccus: 
long, narrow, projecting far into the abdomen. Bursa copulatrix elon- 
gated, with a widening at the distal end, which is thickly covered with 
rather long, thin teeth on its inner surface; a row of groups of similar 
Fig. 4. Arytrura subfalcata M é n. 
teeth extends from distal to proximal end of the bursa; ductus bursae 
strongly bent, S-shaped, not distinctly separated from the bursa. 
Type: musculus Men. 
Key to species. 
l. Transverse lines smoothly waved; penis with a pair of palpi- 
like, sparely bristled prominences; bursa copulatrix with a smooth sur- 
face. A. muscilus Men. (fig. 3). 
2. Transverse lines strongly dentate; penis with a pair of bag like 
prominences, which are covered with spines; bursa copulatrix with deep 
longitudinal furrows. A. subfalcata M én. (fig. 4). 
Revue Russe d'Entom. XII. 1912. Ne 1. 
