210 
The three following genera compose the family 
Lyccenidce of Dr Leach, and the Polyommatidce of 
S wainson. Most of them are insects below the middle 
size, but all are distinguished by delicate markings, 
and many by great brilliancy of colour. The ca- 
terpillars are oval and depressed, and termed onisci- 
form, from their resemblance to the small Myria- 
podce of the genus Oniscus- The genus Thecla 
has antenna; gradually thickening to the apex, palpi 
with the terminal joint short, slender, and oval, eyes 
pubescent, and the claws undivided and very mi- 
nute. The upper wings are triangular and entire, 
but the secondary pair produce one or two caudal 
appendages near the anal angle. All the species 
are brown above, and usually have the under side 
adorned with narrow' undulating lines of pale yellow 
or white. The larvae are never found on herbace- 
ous plants, but confine themselves to trees and 
shrubs. 
