286° Transactions.— Zoology. 
near the middle of that line, the two anterior distant, the others placed a little further 
back only separated by the dorsal groove; behind these there is a curved ridge ex- 
ean a each antenna and the middle, but not attaining the medial furrow ; the 
space behind is more or less rugose and sparsely hispid, with a few small punctures 
behind each ridge. The mandibles are large and triangular; the maxillary palpi are robust, 
four-jointed, abruptly decreasing in bulk, so that the terminal joint becomes quite minute; 
the labial palpi are tri-articulate, smaller than, but similar in form to the maxillary, but 
with their apical joint rather less abbreviated; the antenne are very small, not even as 
long as the labial palpi, with four joints, of which the last is almost aciculate, and their 
joints are evidently capable of retraction one within the other. The second segment is 
larger than the following two united, having near each side a large, slightly-raised, tri- 
angular space terminating in a carina, which extends forwards beyond the middle; the 
disc is den coarsely rugose, but the sculpture becomes much finer towards the front, 
where there are some deep wrinkles. On each of the succeeding segments, though less 
evident on the third and last, there is a large transverse space, slightly elevated, but 
flattened above, ee is distinctly wrinkled; the surface of these segments (3-13) is 
covered with minute, spine-like elevations, whilst the extremity of the last three is more 
or less coarsely rugose. The sculpture of the under side of the segments corresponds, 
more or less, with that of the upper. The spiracles are transversely oval, nine in number 
on each side, the first, situated on the third segment, is twice as large as any of the others, 
which are located on the fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelf 
segments, The legs, attached to the second, third, and fourth segments, are very short, 
four-jointed, and very similar in structure to the palpi, but having the last articulation 
more slender and slightly curved. 
The larve, when immersed in alcohol, become discoloured, so that after 
the lapse of a few months they become of a pale brown; the size varies, the 
measurements given above are applicable to full grown examples only. 
The pupa resembles the larva in colour, is about 21 lines in length by 7 or 8 in 
breadth in its widest parts, and consists of twelve dorsal segments, the thirteenth being 
retracted to form the generative organs, whilst the first is represented by the head; it is 
subject to the modifications observable in the larva when preserved in spirits. The eyes 
are sometimes discernible, but are covered by a film; the elytra, proceeding from the 
third segment, are obliquely folded below the body, and, to a great extent, cover the 
under-wings, which issue from the fourth segment; the antenne form a curve, and repose 
on the elytra; the four front legs are folded above these, the posterior pair below the 
wings. 
The second dorsal segment is somewhat similar in outline to the prothomz of the 
ect insect, rather uneven, and more or less transversely rugose bout 
half the length of the contiguous eun terminates behind in a gs: obtuse tubercle, and 
is also wrinkled. The fourth bears a tubercle near each side, and a median longitudinal 
row of small tubercular hne: which, however, become obsolete posteriorly; its 
surface is a little glossy and exhibits many minute, spine-like tubercles, sm however, so 
closely eongregated as on the remaining segments. = seventh, eighth, ninth, and 
enth, bear an obvious discoidal elevation, —— two almost dieci tubercles ; 
whilst the last, which might be termed the ak terminates in two fleshy protu- 
berances. 
The information respecting the habits of this insect may be communi- 
cated in this way. We will suppose the female to have selected an old 
