new Species of Blattide. 27 
related to reproduction. The form of the subgenital lamina 
in I, Ridleyt recalls that of Hemithyrsocera histrio, Burm. 
Ischnoptera perpulchra, sp. n. 
?. Head testaceous, antennz (mutilated) testaceous at 
base. Pronotum trapezoidal, posterior margin slightly pro- 
duced; disk flavo-testaceous, encircled by a broad penannular 
ring of black, open on the anterior margin, lateral and poste- 
rior margins testaceous. ‘Tlegmina castaneous, margin testa- 
ceous ; eighteen costal veins; radial vein bifureated beyond 
the middle, the lower branch sending ramifications to the 
apex of the wing; discoidal field with nine longitudinal 
sectors, the most internal of which are angled. Wings 
hyaline, veins fuscous, marginal field bordered with testa- 
ceous ; mediastinal vein with six branches, ten to twelve 
costal veins, radial vein bifureated beyond the middle; ulnar 
vein with seven branches, three of which run towards the 
dividing vein. Abdomen flavo-testaceous above, except at 
the apex, which is fuscous, testaceous below ; supra-anal 
lamina produced triangular, subgenital lamina ample. Legs 
testaceous; front femora armed on the anterior margin 
beneath with strong spines throughout its length, the most 
basal the longest ; formula of apical spines #, 4,1; front 
femora without a genicular spine, unless the most anterior 
apical spine is to be regarded as such. 
Length of body 12 mm.; length of tegmina 14 mm. 
Macassar, Celebes (W. Doherty, 1896); one example 
(Oxford Museum). 
This species is rather a puzzling one; the angulation of 
some of the discoidal sectors of the tegmina suggests the 
genera Pseudomops and Pseudothyrsocera, but this is a 
character that also crops up in Phyllodromia, and, taken by 
itself, is not of the greatest importance ; it is on account of 
the branching of the vena ulnaris alarum, so characteristic of 
Ischnoptera, that I have referred this species to that generic 
position. 
Ischnoptera cavernicola, sp. n. 
6. Head castaneous, mouth-parts testaceous; antenne 
testaceous, one and a half times longer than the body, 
Pronotum rufo-castaneous, with lateral and posterior margins 
narrowly castaneous. Tegmina clear testaceous, radial vein 
bifurcated, twelve costal veins, six discoidal sectors. Wings 
hyaline, mediastinal vein with three branches, seven costal 
