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tinctly longer than first tarsal joint, smooth-scaled, with a complete ro w 
of spines on each side, the outer row somewhat conceale d in vestiture; 
mid tarsi with fourth row of spines as in Agrotis. Vestiture of thorax 
composed of simple hairs intermingled with a few forked ones. 
Male Genitalia. Very similar to that of Agrotis , but the armature of 
the vesica consists of a short bulbed cornutus. 
The genus was erected for the single species acarnea on the strength 
of the haired eyes. Were it not for this fact the writer would be much 
inclined to include manifesta Morr. and geniculata G. and R. in the same 
group. Trichosilia is undoubtedly a slight offshoot from Agrotis. 
Richia Grt. 
1887, Can. Ent. XIX, 44 (type, chortalis Harv.). 
Eyes naked. Palpi upturned with rather long, conical third joint, 
slightly porrected; second joint moderately fringed with long hair below; 
third joint smooth-scaled. Front bulging, but smooth. Male antennse 
fasciculate. Tibiae all spined, the fore tibia shorter than or subequal to 
the first tarsal joint, smooth-scaled with complete row of spines on each 
side; mid tarsus normal except in chortalis where it is extraordinarily 
swollen and lengthened at the expense of the other joints, the under- 
surface with the median row of spines extended to form three or more rows; 
a fourth lateral row of spines well indicated. Vestiture of thorax composed 
of scales and hair with a well-developed median crest and traces of a 
divided posterior tuft. 
Figure 8. Male genitalia of Richia chortalis Harv. 
Male Genitalia. Clasper rather short, the costa bulging beyond base; 
corona present but weak and confined to the costo-apical portion ; harpe a 
stout hook, attached in the genotype obliquely to apex of sacculus by a 
chitinous rod and projecting slightly over costal edge of clasper, in the 
66022 — 3 * 
