28 , Jlr. R. Slielfur.l on eovxd 



veins, radial vein not bifurcated, ulnar vein sending three 

 branches to the dividing vein and three to the apex of the 

 winj;. Abdomen rnfo-testaceous, supra-anal lamina sli.i,^htly 

 produced, rounded ; subgenital lamina produced, narrow, 

 with two stout styles ; eerci elonjjate. Lejjs rnfo-testa- 

 ceous ; front femora with anterior marj^in beneath armed 

 throug:hout its length with a series of short spines, the 

 most distal the shortest; apical spines |, |, [; genicular 

 spines 1, 1, 1. 



I.cngthof body 10 mm.: length of tegmina 9 5 mm. 



In cave at Bidi, Sarawak, Borneo {li. Shel/ord) ; one 

 example (Oxford jNIuseum). [No. 22.] 



The species, which can he 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 

 {Pofanwn bidii^nse, Lanch.), which were all found in con- 

 siderable numbers in the darkest part of tlie cave, show no 

 reduction in size of the eyes ; one can only suppose that 

 the eaves have been peopled within quite recent times by 

 these Arthropoda. Tlie antennae of the Stenopelmatid are 

 of great lengthy but this is not the case in Ischnoplera 

 cavernicola. 



Genus Ellipsidiu.m, Sauss. 

 Ellipsidium castaneum, sp. n. 



? . Head dark rufous, with a black spot between the 

 antennal sockets; antennae 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 eastaneous, with the densely reticulated veins pale 

 testaceous, the mediastinal field hyaline. Wings infuscatcd, 

 veins flavid. Abdomen black beneath, sternites with white 

 margins ; subgenital lamina with the apex slightly cleft ; 

 cerci black, with eastaneous legs. Legs eastaneous, the 

 coxse black, with white borders, the tarsi black. 



Total length 14- mm. ; length of tegmina 12-5 mm. ; 

 pronotum 4xG mm. 



Humboldt Bay, New Guinea {W. Doherty, 1896) ; one 

 example (Oxford Museum). 



