Forficulide and Chelisochide, families of Dermatoptera. 117 
Hab. Hast Arrica: Kilimandjaro, Kiboscho, at the 
highest limits of vegetation. 
This species was discovered in great numbers by Dr. 
Yneve Sjéstedt, who has kindly given me permission to 
include its diagnosis in this paper. It will be more fully 
described and discussed in a work upon the results of Dr. 
Sjostedt’s travels in Hast Africa. 
Genus 2.—APTERYGIDA, Westwood. 
The older authors included a large number of diversified 
and highly heterogeneous forms in this genus, which I 
have reduced to its narrowest limits, including only 
albipennis Meg,* the typical species for which Westwood 
erected the genus. 
The genus Sphingolabis, Borm., I formerly pointed out 
coincided with Apterygida unless the two species S. fur- 
cifera and A. albipennis could be shown to be not 
generically related to each other (Ann. Mag. N. H. ser. 7, 
vol. iv, 1899, p. 255). Sphingolabis was wrongly revived 
by Verhoeff for S. sansibarica, which is very different in 
structure from S, furcifera. 
A. arachidis, Yers., has always been regarded as closely 
allied to A. albipennis, but the second tarsal segment has 
not that large and prominent lobe which is characteristic 
of this group of sub-families, from which it must con- 
sequently be removed. A. /inearis and the other forms with 
a spiny pygidium I have placed together in a new genus. 
The type is Forficula albipennis, Megerle apud Charp. 
Hor. Ent. p. 68 (1825), from Central Europe. 
Sub-family 8.—SKHNDY LIN Ai. 
It is necessary to separate the species aptera, Verhoef, 
from the genus Cosmiella, and as it does not fall naturally » 
into any other group it is necessary to make a separate 
sub-family for its reception. The only known species re- 
calls certain Ancistrogaster in appearance, and its affinities 
are undoubtedly with that genus, but the fourth antennal 
segment is somewhat shorter than the third, a fact which 
precludes it from that sub-family. 
The form of the antennz separates it from the Opistho- 
cosmuine. 
* The name Forficulu media is preoccupied by Marsham, Col. 
Brit. p. 5380 (1802) = Labia minor (1.). 
