52 Mr, G. W. Kirkaldy on Aquatic Rhynchota. 



U'. Lower ends of body-stripes on 

 belly not meeting ventral stripe ; 

 principal stripes on quarters 

 broad ; legs not or hardly striped 



below knees and hocks antiquorum,!!. Smith. 



(Damaraland.) 

 A* Quarters with only a few abbreviated 

 stripes below the long stripe that 

 runs to the root of the tail ; body- 

 stripes stopping short above the 

 belly as in i'. zebra, E. qua(/ga, and 

 E. Grevyi; legs without stripes, 

 except sometimes on the knees and 

 hocks ; tail usually without lateral 



spots or stripes Burchelli, Gray {sensu 



strict o). (British 

 Bechuanaland.) 

 5'. Ground-colour yellowish red or chest- 

 nut, with the exception of the belly 

 and legs, which are pale and without 

 stripes as in E. Burchelli ; body-stripes 

 showing a strong tendency to die away 

 on the posterior part of the fianks, 

 when reaching the quarters broken up 



into spots qieaffga,Gmelm. (Cape 



Colony, south of 

 Orange River.) 



YI. — Aquatic Bhynchota : Descriptions and Notes. — No. I. 

 By George "W. Kiekaldy. 



Fam. Corixidae. 



DiAPEEPOCOEiS, gen. nov. 



Corixinarum genus, scutello magno parapleurisque minutis in- 

 structis ; ovalis, depressus ; capite magno, basi supra thoracem 

 producto. Pronoto transversissimo, non rastrato. Scutello hemi- 

 elytrisque non rastratis. Eostro unisegmentato. Palis bi- 

 segmeutatis. Pedibus intermediis posticisque Corixoe, Geoff., 

 similibus. 



Oval, depressed, dull ; head large (very convex at the 

 vertex), overlapping the very transverse non-rastrate pro- 

 notum. Scutellum very large, not rastrate ; parapleura 

 minute. Hemielytra not rastrate. 



Rostrum unisegmentate. Paloi bisegmentate. 



Intermediate and posterior ^etfes as in Corixa, GeofF. 



This utterly distinct genus is readily distinguished by the 

 very transverse pronotum and by the large scutellum ; the 

 parapleura and the unisegmentate rostrum will further sepa- 



