140 LETTERS ON ENTOMOLOGY. 
flies, and bring them into their houses. Besides 
these there is a genus in the order Hemiptera, 
called Fulgora, which have the English name of 
lantern-flies, from the circumstance of their light 
proceeding from a hollow sub-transparent pro- 
jection of the head. In Fulgora candelaria, a 
native of China, this projection is of a sub- 
cylindrical shape, curved back at the point, above 
an inch in length, and of the thickness of a small 
quill, from which the insect emits a very power- 
ful light. In Fulgora laternaria, a native of 
South America, which is two or three inches 
long, this snout is much larger and broader, and 
sheds a transcendent light. Madame Merian 
informs us, that it is quite bright enough to read 
a newspaper by. There is another species, F. 
pyrrhorynchus, which must be still more beauti- 
ful than this, as the projection is of a rich deep 
purple from the base nearly to the end, which is 
of a fine transparent scarlet. There is also a 
species of scolopendra (S. elect rica), commonly 
called centipedes or hundred-legs, which are 
luminous, and very common in this country ; 
they may be found under the earth, and are very* 
visible at night. The mole-cricket, which is a very 
scarce insect, is said to be luminous. The light 
in the glow-worm, and in Elatcr noctilucus and 
