OLIAEUS. 257 



at the base itself ; thorax testaceous ; pronotum very short, 

 posteriorly angularly sinuate ; mesonotum with five longitudinal 

 ridges which are paler in colour, and of ^^■hich the lateral pair 

 soroewhat diverge towards the apex ; body beneath pale flavo- 

 testaceous ; sternum piceous. 



Length excl. tegni. 4 ; exp. tegm. 12 milliin. 



Hah. A. species recorded from the Malay Peninsula and the 

 Phihppine Islands, just entering our faunistic area on its south- 

 eastern frontier, I am indebted to Dr. Aurivillius for an oppor- 

 tunity of figuring it. 



1792. Oliarus stigma, Motsch. (Cixius) Bull. Soc. Nat. Moscxxwi, 3, 



p. 105 (1863); Melick. Horn. Faun. Cei/lon, p. 30 (1903). 



Body above pale castaneous; ridges to head, pronotum, posterior 

 margin of mesonotum, and abdominal segmental margins pale 

 ochraceous ; body beneath brownish - ochraceous ; abdominal 

 segmental margins pale ochraceous, abdominal apex piceous ; 

 face (excluding margins and central ridge) castaneous ; legs 

 ochraceous ; tegmina creamy-hyaline, the veins fuscous, on about 

 basal half and near apex alternately broken with pale ochra- 

 ceous : stigma fuscous, ochraceous at base ; the tegmina are also 

 ornamented with some irregularly shaped fuscous spots, situate 

 two before middle and about six on apical area, and with a 

 posterior apical marginal fascia of the same colour, the marginal 

 edges of the tegmen also fuscous ; wings hyaline, the venation 

 and apical marginal edge fuscous ; medial ridge to face and clypeus 

 acute, forked at anterior margin of face; mesonotum with five 

 medial longitudinal carinate lines, those on each side of the central 

 one converging and not reaching the anterior margin ; posterior 

 tibiae with two or three very short spines before middle. 



Length excl. tegm. 5i to 6 ; exp. tegm. 16 to 19 millim. 



Ilab. Ceylon (Green). .: 



1793. Oliarus tabrobanensis, Melich. Horn. Fatm. Ceulon, r». 31 



(1903). ^ 



I only know this species by Melichar's description, of which the 

 following appear to be the salient points : — Tellowish-brown ; face 

 two and a half times as long as width between eyes, with a trans- 

 verse ridge strongly acutely angulated and interrupted in front ; 

 fore part of head rusty-brown, on its lower angles there is a 

 yellowish-white transverse streak on each side ; antennae piceous ; 

 ocelli distinct, pale yellowish, shining ; pronotum narrow, 

 posteriorly obtusely angularly excavate, pale yellowish-brown, 

 thoracic folds rusty-brown, the outward curved lateral keels 

 paler ; mesonotum brown with five rusty-yellow ridges ; tegmina 

 hyaline with yellowish veins, which are coloured in places with 

 piceous and are set with fine brown granules from which emerge 

 short erect brown hairs, on the inside of the yellowish costal vein 



VOL. III. s 



