DIOPSIS. DIOPSIS. 
Generic Character, 
Antennce minim®, setace®. 
Oculi pedunculati ; pedun- 
culis longissimis. 
Antemice very small, seta- 
ceous. 
Eyes situated on very long 
footstalks. 
TT H E genus Diopsis, which has no place in the 
twelfth edition of the Systema Naturae, was insti- 
tuted by Andrew Dahl, a pupil of Linnaeus, in 
an entomological dissertation published at Upsal 
in the year 1775. The only species hitherto dis- 
covered is the Diopsis ichneumonea, a small insect 
of about the size of an x\nt, and highly remark- 
able for the singular appearance of the eyes, 
which appear seated at the tips of a pair of long 
styles or processes, at first sight resembling an- 
tennas. The general colour of the animal is ru- 
fous brown, with the thorax and extremity of the 
body darker or blacker than the other parts: on 
the hind part of the thorax are placed two spines 
in the middle, and one on each side: the wings 
are transparent, each marked towards the upper 
part of the tip by a black spot. The insect is said 
to be a native of Guinea, 
