47 
Figure 25. Male genitalia of Peridroma margarilosa Haw. 
The writer has revived the old name Peridroma for the single species 
margaritosa which evidently represents a primitive form. 
Hemipachnobia gen. nov. 
Type, Agrotis monochromatea Morr. 
Eyes naked. Palpi upturned, the third joint somewhat porrect; 
second joint strongly fringed with hair below, third joint smooth-scaled. 
Front smooth. Male antennae strongly bipectinate. Tibiae all spined; 
fore tibia longer than first tarsal joint, smooth-scaled, with a complete row 
of spines on both inner and outer sides; mid tarsi with fourth row of spines 
on outer side laterally. Thoracic vestiture in d 71 roughened, consisting of 
hair-like scales, in 9 smoother and with broader scales ^tufting obsolescent. 
66022 — 4J 
Figure 26. Male genitalia of Hemipachnobia monochroynatea Morr. 
