Labiduridae, a famil'y of the Dermaptera. 163 
setiger, Verb., and A. maartensi, Verb., I regard as mere 
varieties of A. indicum, Hag. 
It is necessary to remove to this genus Psalis guttata, 
Borm., wliicli is the same as Forficula doriae, Diibr., so the 
correct name is now Allostethus doriae, Dubr. 
Anisolabis piligera, Borm., has been looked upon as an 
aberrant form of the genus Anisolabis, but the pro- and 
mesosternum are strongly narrowed, so it must be removed 
to the Allostethinae. It may be the nymph of A. indicum, 
but as the three syntypes in my possession appear to be 
adult, we may provisionally call it Allostethus piligerum, 
Borm.; if it really is mature a new genus must be formed 
for its reception, since it is completely apterous. 
Sub-family Z.—ESPHALMENINAE. 
This group was recently revised by me (1901^), and 
I have nothing to add, except that Gonolabis inca, 
Burr, from Peru, should be included here ; it is a true 
Esplialmenns. 
Sub-family 4:.—EGHINOS()MA TINAE. 
This group I have recently separated from the Pgra- 
grinae, in which Verhoeff included them, on the strength 
of the form of the prosternum; in the former group this 
plate has the anterior margin rounded ; in the latter it 
is more or less bluntly pointed. The Ecliinosomatinae 
is formed only for Echinosoma, Serv., which is essen¬ 
tially an Old World group; the forceps of the male are 
invariably remote, cylindrical and arcuate, and the whole 
body is covered with stiff hairs and numerous, blunt, 
dilated bristles. All the species have a strong family 
likeness, and doubtless several may be advantageously 
reduced to the rank of local races or varieties. 
A number of the existing species can only be discrimin¬ 
ated by coloration, as a glance at the synoptical table of 
de Bormans will show. Unfortunately, sufficient material 
is not yet available to establish a satisfactory arrange¬ 
ment. 
The following notes, however, may be of use for the 
identification of species, and may contribute to the estab¬ 
lishment of a rational arrangement based on structural 
characters. 
One species has the segments of the antennae clavate; 
M 2 
