LEPIDOPTERA. —LYCENIDE. 359 
of the latter especially have the hind wings produced into very long 
tails. The majority have the entire under surface of the wing, or, 
at least, the anal angle, ornamented with eye-like spots of various 
colours. The flight of these insects is feeble and slow. 
Dr. Horsfield has especially investigated the transformations of 
many of these insects, in his Lepidoptera Javanica, the larve of 
which vary very considerably in their form, some exhibiting much 
less resemblance to woodlice than others; some are very rough on 
the upper surface of the body, and that of Thecla Xenophon has 
several rows of fascicles of hairs. They have hitherto been observed 
to feed only upon the leaves of different trees and plants in the larva 
_ state; but a beautiful Indian species (Thecla Isocrates abr.) resides 
within the fruit of the pomegranate, several (seven or eight) being 
found within one fruit, in which, after consuming the interior, they 
assume the pupa state, having first eaten as many holes as there are 
insects through the rind of the fruit, and carefully attached its 
footstalk to the branch, by a coating of silk, in order to prevent its 
falling (Westwood in Trans. Ené. Soc. vol. ii. p. 1.). 
Dr. Horsfield has figured a singular genus with its details (Symetha 
Pandu Z. pl. 2. f. 2.) from Java, in which the basal joint of all the 
tarsi forms a very broad and long plate, the other joints being very 
minute, and, indeed, obsolete in the fore leg of the male. 
Fig. 101. 

A still more curious genus, figured by Dr. Horsfield, and placed 
by him as one of the normal genera ‘of the present family, al- 
though forming the transition to the Hesperiide, is Petavia (P. Sa- 
kuni, jig. 101.1.; 2. body sideways, showing the feet; 3. apex of an- 
tenne ; 4. hind leg, Polyommatus Petavius, Enecycl. Meéth.). 
AA 4 
