immature state of a Ceylonese insect. 603 
terminal portion of the abdomen is also transversely 
banded with dark colour. 
At first sight the insect in this state at once reminds 
the observer of the genus Campodea, which, like it, runs 
about in garden ground, and is furnished with two very 
long anal sete (cf. Campodea staphylinus, Westw., Trans. 
Ent. Soc. Lond. iii., 232; 1842); but this relationship is 
quite superficial. The structure of the mouth of the 
insect brings it to the great division of mandibulated 
insects undergoing an active state preceding the assump- 
tion of the imago form, and possessing galeated maxille 
and articulated filamentous anal appendages. The Per- 
lide, amongst the Neuroptera, possess these characters, 
but the terrestial habits of this insect removes it from 
that family. The structure of the legs and tarsi, and the 
very elongated anal filaments, separate it from the genus 
Embia, to which its habits assimilate it, whilst its simple 
hind legs and linear form remove it from the saltatorial 
Orthoptera and Blattide. In its general form it puts one 
much in mind of an immature earwig, but the horny 
exarticulate anal appendages of the Forficulide prevent 
us from regarding it as belonging to that family. The 
discovery of the imago state will alone enable us to deter- 
mine the group to which the insect is referable. 
For the sake of identification, I venture to apply a 
~name to the insect above described, which, from the diffi- 
culty attending the present determination of its relations 
and its most peculiar characteristic, may be termed 
Dyscritina longisetosa. 
EXPLANATION OF PuatTeE XXII. 
Fic. 1. Dyscritina longisetosa, magnified. 
la. Natural size of ditto. 
1b. Head and base of antenne. 
le. Labrum. 
1d. Mandible. 
le. Maxilla. 
if. Mentum, labium, and labial palpi. 
1g. Antenna. 
1h. Fore leg. 
li. Hind leg. 
