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[July 1833 BULLETIN BROOKLYN ENTOM. SOC. VOL. VI. 33 
On the Anatomy of the N. A. Noctuidae. 
Part I. The Legs. 
By. John B. Smith. 
JOR 
Alcha presents nothing noteworthy except the tarsal claw which is 
like that of Luclidia ereeh’ea and shows a tendency downward. 
Basilodes, Stirta, Plagiomimi.us and Shbadium which I consider ge— 
nerically indentical have a claw at the tip of the anterior tibia. have the 
anterior femur unusually large and the tibial excavation unusually small. 
Right here as catalogued come several very peculiarly modified 
genera, the last mentioned may be considered as introducing them and 
all together they form a group peculiar to this continent, and generally 
to the mare w estern part of it’ It is to this group that the term ‘‘armed 
fore tibia” .is peculiarly applicable, and I have described and _ figured all 
of them in my recent synopsis of the Heliotine. 
Nanthothrix Hy. Edw. embraces two rather dissimilar species, 
agreeing in the armature of the anterior tibia, and in the short compact 
legs ; it is closely related to ALM:lepiria, and Axenus. 
lo shows a decided downward tendency : ‘the anterior coxa is 
nearly as long as the femur, but heavier with a more decided groove : the 
tibia is slender, the excavation marked and long, the lappet being nearly 
as long as the tibia itself. The claws of the tarsi are long, slender and 
simple. — a 
Gyros is an odd genus with very decidedly grooved anterior tibia 
and the lappet unusually large and prominent. 
Euclidia begins the series of what is rather arbitrarily termed ‘‘Fas— 
ctatae’. 
The common species ereA/ex Hb. has long anterior coxe, slender 
legs, prominent spurs on median and posterior tibice, very heavily spined 
tarsi and claws the latter being flattened, wide and terminating with an 
acute hook ; this form of claw is never so far as my observations extend 
formed in the typical Noctua, but is the prevailing form in the lower ge- 
nera and more particularly the D.loidae. The spurs on the median and 
posterior tibia are unequal, the inner are being longest, they are as widely 
separated as it 18 possible for them to be, and ‘the anterior pair on posterior 
tibie are longest. 
Litosea Grt. which in my opinion is genericaliy identical with w- 
clidia has the posterior legs rather longer, and the proportion is rather 
more’ prralid iform than in the other species of the genus, 
