CLASS V. INSECTA. 
233 
Genus 308 . ALEYRODES. Lair., Lam., Leach, Tinea . Linn. 
PlIALiENA. Geoff. 
•Antenna filiform, short, six-jointed: elytra and wings equal in size; 
body mealy : eyes two, each divided into two. 
S P- 1. Al. Chelidonii. Body yellowish, or rosy powdered with white; 
eyes black; each elytron with a puncture and spot of black. 
Inhabits hedges and woods. 
Fani. V. Coccida:. Leach. 
^alinsecta. Latreilie. 
Tarsi with one joint and one nail : rostrum in the female : wings in the 
male, but no elytra : female apterous. 
Genus 309. COCCUS. Linn., Geoff., Fabr., Oliv., Latr., Lam., 
Leach. 
■Antenna of the female eleven-jointed : abdomen of the males with two 
very long set® at the apex. 
®P- 1. Coe. Cacti. 
Coccus Cacti. Linn,, De Geer, Fair., Latr., Leach. 
Inhabits fruit-trees. • 
This genus requires a minute investigation, which should be con* 
ducted by some one possessing a great shave of patience, and hav- 
ing a competent knowledge of entomology. 
Order IX. APTERA. Leach , 
Order Aptera. Linn., Lamarck, 
Order Suctoria. Latr. 
Characters of the Order. 
Body somewhat ovate, compressed, covered with a coriaceous skin, 
and composed of several segments : trunk short, consisting of three 
leg-bearing joints : head small, compressed, rounded above, and 
huncate before : eyes minute, orbicular, lateral : antennee JamelU- 
•orm, small, ciliated with spinules, one-jointed at their base, insert- 
ed in two excavations behind the eyes : palpi filiform (composed or 
I°ur rounded joints) scarcely longer than the head, porrect, generally 
testing op the rostrum ; legs strong, and formed for jumping, espe- 
cially the hinder ones : auw and thighs large, compressed : tarsi 
elongate, cylindric, composed of five simple joints, the last articula- 
tion furnished with two long, acute, slender nails, 
' VIiv A without feet. 
^ opa folliculate. 
