PHOSPHORIC INSECTS. 153 
pendage projecting from the head—a sort of long 
proboscis. In F’. laternaria, which inhabits South 
America, this projection is horizontal, unever, and 
rounded at the extremity. In I’. candelaria, which 
is found in China, the proboscis is cylindrical and 
curved upwards. 
It is from these appendages, the sides of which 
are transparent, that the phosphoric ight ema- 
nates; they appear to be filled with a pecuhar 
phosphoric substance. Madame Mérian was the 
first to observe the phenomenon. According to 
her account, [’. laternaria, which is a large insect, 
emits a most brilliant light. It is said also that 
the trunk of a tree covered with numerous indivi- 
duals of f. candelaria—some in movement, others 
in repose—presents avery grand spectacle, impos- 
sible to describe, but which may be witnessed 
sometimes in China. 
Lulgora pyrrhorynchus, described and figured 
by Donovan in his ‘ Insects of India,’ is said to 
emit heht of a fine purple colour. 
Some authors have denied that the Fulgora 
-shine. Count Hoffmansegg informs us that his 
insect collector, Sieber, a practised entomologist 
of thirty years’ standmg, who took many spe- 
cimens of Lf. laternaria in the Brazils, never saw 
one lumimous. On the other hand, the Marquis 
Spinola, in the ‘ Annals of the Entomological So- 
ciety of France,’ vol. vi., contends for the lumi- 
