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Vol. VII, No. 11.] Indian Earwigs. 775 
[NV.8.] 
the femora: these are not a scientific essential characteristic of 
that group, but merely a convenient feature for purpose of 
identification. 
p- 73. 
Subfamily ALLOSTETHINAE. 
This subfamily includes a few species of powerfully built, 
dark-coloured earwigs, only known from the Oriental Region. 
It is characterized by the form of the sternal plates ; both 
the prosternum and mesosternum being sharply pointed pos- 
teriorly ; the second tarsal segment has a tufted lobe, some- 
what resembling that of the Chelisochidae. 
Three genera are known, and as they may in time all be 
discovered in India, and still more probably in Burma, we 
give the following table of genera :— 
Table of Genera. 
1. Totally apterous: metanotum - 
a 
inflated at the base) .. 1. Gonolabidura, Zacher. 
1. 1. Elytra always, wings usually, 
well developed and metano- 
tum truncate (virga not in- 
flated). 
2. Size large. (About 30 mm.) : 
the praeputial sack: 
metaparameres powerful, el- 
iptica vi .. 2. Allostethus, Verhoeft. 
2. 2. Size smaller (l1O—21 mm.) (virga 
ongly bowed, longer than 
the praeputial sack: meta- 
parameres feeble, apically 
pointed) cs . 3. Allosthetella, Zacher. 
The genus Allostethus includes the well-known Malayan ear- 
wig formerly known as Psalis indica, Hagenb. : it is a powerful, 
dark-coloured,. usually fully-winged species, sometimes with an 
ill-defined yellowish spot on the elytra. It may be discovered 
i a, whence I have seen a distinctly Allostethid, but 
indeterminable, young larva. Allosthetella, Zacher, contains 
a Malayan species, which resembles the above and its allies, 
but is much smaller. 
Genus GoNOLABIDURA, Zacher. 
Typs: Gonolabidura volz, Zacher. (= piligera, Borm.). 
Build powerful: antennae multi-segmentate, 4 and 5 seg- 
ments short: totally apterous, the metanotum concave behind , 
