28 Mr. R. Shelford on some 
veins, radial vein not bifurcated, ulnar vein sending three 
branches to the dividing vein and three to the apex of the 
wing. Abdomen rufo-testaceous, supra-anal lamina slightly 
produced, rounded; subgenital lamina produced, narrow, 
with two stout styles ; cerci elongate. Legs rufo-testa- 
ceous; front femora with anterior margin beneath armed 
throughout its length with a series of short spines, the 
most distal the short test; apical spines +, 1, 1; genicular 
spines I, 1, 1. 
Length of body 10 mm.; length of tegmina 9°5 mm. 
In cave at Bidi, Sarawak, Borneo (R. Shelford); one 
example (Oxford Mu iseum). [No. 22. 
The species, which can be readily recognized by the pale 
pronotum with dark margins, was found in some numbers in 
a large and quite dark cave in the limestone formation at 
Bidi, Sarawak ; it is somewhat remarkable that this cock- 
roach, a Stenopelmatid (? Dolichopoda), and a species of crab 
(Potamon bidiense, Lanch.), which were all found in con- 
siderable numbers in the darkest part of the cave, show no 
reduction im size of the eyes; one can only suppose that 
the caves have been peopled within quite recent times by 
these Arthropoda. The antenne of the Stenopelmatid are 
of great Jength, but this is not the case in Ischnoptera 
cavernicola. 
Genus ExiipsrpiuM, Sauss. 
Ellipsidium castaneum, sp. un. 
9. Head dark rufous, with a black spot between the 
antennal sockets; antennz with the basal half strongly 
incrassated, black, the two basal joints rufous, apical half 
with a testaceous band occupying ten lower joints, the 
remaining joints fuscous. Disk of the pronotum rufo- 
testaceous, with a symmetrical black design, anterior and 
posterior margins pale testaceous, lateral margins hyaline. 
‘Tegmina castaneous , with the densely reticulated veins pale 
testaceous, the mediastinal field hyaline. Wings infuscated, 
veins flavid. Abdomen black beneath, sternites with white 
margins ; subgenital lamina with the apex slightly cleft ; 
cerci black, with castaneous legs. Legs castaneous, the 
coxz black, with white borders, the tarsi black. 
Total lei agth 14 mm.; length of tegmina 12°5 mm.; 
pronotum 4% 6 mm. 
Humboldt Bay, New Guinea (W. Doherty, 1896) ; one 
example (Oxford Museum). 
