STATES OF INSECTS. (Pupa.) 289 
with the subject of it that deserves to be recorded. It-is 
a general rule, that one pupa-case incloses only one in- 
sect; but Kleesius, a German entomologist, asserts that 
he had once ¢wo specimens of Gastropacha quercifolia 
produced from one pupa; which was large, being full 
two inches long, and one thick. 
I am, &c. 
VOL. III. U 
