PHOSPHORIC INSECTS. 151 
sects, states that the “dim phosphoric lght” 
mentioned by Professor Afzelius is probably only 
reflected light owed to the highly polished surface 
of the spherical cellular antenne. But this is 
merely a supposition, and does not even amount 
to negative evidence. The génus Paussus is not 
mentioned in the twelfth edition of Linneeus’s 
‘Systema Nature.’ The species above named 
appear to be all night insects; they are easily 
recognized by the peculiar knob at the end of 
each of their antenne, which are very short, and 
composed of only two segments, mcluding the 
cellular one. 
Lamarck thought that the two oval red spots 
which we remark upon the second segment of the 
abdomen of Chiroscelis bifenestrata are luminous 
in the dark. I am not aware that the fact has 
ever been confirmed. This insect, which is black, 
and about 14 inch long, inhabits the Isle Maria. 
Its oval spots resemble those on the back of Hla- 
ter noctilucus. 
According to Latreille,the Chinese insect known 
as Buprestis ocellata has two spots upon its elytra, 
which are luminous at night. <A friend of this 
naturalist assured him that he had seen these 
spots luminous in a living specimen which was 
brought from China to the Isle of France in some 
wood. 
The Scarabeus phosphoricus, which Treviranus 
