104 THE ENTOMOLOGIST. 
seemed to be so far imperfectly developed, as the neuration in 
either wing shewed a hiatus here and there. The left wing 
especially had more than one imperfection; for example, there 
were only two marginal cells instead of four, while in other places, 
also, parts of nervures were wanting. In figuring this imago 
IT have restored the absent nervures, but in the third discoidal 
cell I have retained a redundant process of the lower nervure, 
which occurred in both wings. 
The following is a description of this insect without the 
defects :—Length, eleven mm.; expansion of the wings, twenty- 
four mm.; head very broad and flat, dull black, rough, with two 
short longitudinal lines on the after part; between the antenne 
are two yellow transverse lines; labrum black; the mandibles 
armed with two teeth, of which the outer is much longer and 
more pointed than the inner, the mandibles themselves being 
yellow with dark brown tips. The four palpi ferruginous. The 
antenne, which are inserted between the eyes, are setiform, and 
have twenty-two joints, the last of which are very difficult to 
distinguish ; the first joimt is very small; the second, somewhat 
elub-shaped, is a little bent outwards and of a yellow tint, shining, 
and having a fine black longitudinal line on the upper side; the 
third joint is short, reversed conical, and yellow; the fourth, as 
long as the preceding three, is narrow at the base, where it is of 
a yellow colour, becoming piceous farther on and a little thicker ; 
the fifth is somewhat thinner, and is only a third of the length of 
the fourth ; the fifth joint is black, as are all the following, which 
regularly decrease in length and thickness (fig. 11). The eyes 
are tolerably large and projecting, very nearly oval in outline, and 
of a dark brown colour; the three black ocelli are difficult to 
distinguish. The thorax is transversely depressed and rough on 
the dorsum, only the anterior lobes being smooth and shining, 
for the rest rough and duil. The tegule are dull yellow, the 
cenchri black. The wings are rather broad, very shining, 
transparent, and with brown nervures; the stigma is brown and 
thick, and from it descends a smoke-coloured band, which runs 
transversely across the anterior wing and on to the posterior wing, 
where it is of a fainter tint, and curves round the middle cell. 
The abdomen is flat and broad; the first five segments are 
blue-black, the fourth and fifth having a pale yellow spot on 
either side; the following three are ferruginous with pale yellow 
