226 THE ZOOLOGIST. 



Annandale- has found an immature specimen in Chota Nagpur, 

 India.* It remains only to give a name to the Bornean species, 

 which appears to be undescribed. The following description is 

 drawn up from an unique female specimen in the Hope Museum, 

 Oxford, evidently the adult of some of the larval forms obtained. 

 The male is unknown. t The Japanese species has been wrongly 

 referred to the genus Opisthoplatia ; there is no doubt that it is 

 congeneric with the Bornean species. 



Subfam. Epilampein.^. 



Genus Bhicnoda, Brunner. 



Rhicnoda natatrix, sp. n. 



? . Gastaneous. Allied to R. rugosa, Br., from Burma and 

 Java, but larger, and with the dorsal segments less rugose. Head 

 concavely depressed between the antennal sockets, this area 

 cribrately punctate, rest of head with scattered punctures. Pro- 

 notum just covering vertex of head, arcuate, posterior margin 

 truncate, anterior and lateral margins slightly reflected ; a few 

 scattered punctures and a pair of impressions on the disc. Teg- 

 mina rufous, exceeding the mesonotum in length. Meso- and 

 metanotum and abdominal tergites slightly and irregularly 

 rugose, the posterior margins of the sixth and seventh tergites 

 plicated. Supra-anal lamina produced, apex emarginate, cerci 

 abbreviated, spiracular tubes short ; subgenital lamina ample, 

 posterior margin sinuate, disc transversely wrinkled. Front 

 femora with five spines in middle of anterior margin beneath, 

 four spines on posterior margin ; formula of apical spines f , ^, y, 

 front femora with no genicular spine. Posterior metatarsus 

 equals remaining joints. Total length, 35*5 mm. ; length of 

 tegmina, 7 mm. ; pronotum, 10 mm. x 17'5 mm. 



Borneo (Wilson Saunders collection, Hope Museum, Oxford). 



* Jour. As. Soc. Bengal (new series), vol. ii. 1906, pp. 105, 106. Dr. 

 Annandale confirms my account of the respiration of these insects, and noted 

 the ease with which his specimen was drowned when totally submerged. 



f In a preliminary account of these Cockroaches (Rep. Brit. Assoc. 1901, 

 p. 689) I stated that they consisted of two species — one an Epilamprine, the 

 other a Panesthiine. This is an error due to inaccurate information supplied 

 to me at a time when my knowledge of the Blattidce was less than it is now. 

 All the specimens collected by me are immature, and are referable to two 

 Epilamprine genera, Bhicnoda and Epilampra. The females of the former 

 genus apparently lead a semi-aquatic life always. I expect that it will be 

 found eventually that some terrestrial species of Epilampra are amphibious 

 or aquatic in their earlier stages. 



