150 MK. r, WALKEll ON HOMOPTEHA 



^ Male. Piceous. Head with slightly prominent testaceous borders ; 

 vertex short ; front much broader than long, rounded on each side, 

 narrower towards the face, with three slight keels, the keel on each 

 side very remote from the middle one ; face testaceous. Prothorax 

 arched, hiding most of the vertex, with one keel and with a trans- 

 verse furrow. Mesothorax with three keels, the keel on each side 

 diverging hindward from the middle one. Legs testaceous. Fore 

 wings with a white spot in the disk at much beyond the middle; 

 transverse veins numerous, less and less irregular from the first line 

 to the last, which is submarginal; marginal veins not forked, except- 

 ing two, which are apical. Hind wings a little paler than the fore 

 wings, with an incomplete line of transverse veins, and with three 

 forked marginal veins. Length of the body 3 lines, of the wings 

 9 lines. 

 Hob, Batchian. 



This species is distinguished by the few transverse veins of the 

 fore wings, and will form a section in the genus. It is allied 

 to B. {Flatoides) discigutta (Journ. Ent. i. 318). 



177. RiCANiA PATULA. Mas. Nigra, capite piceo, fronte tricarinata 

 testaceo marginata, facie testacea unicarinata, prothorace piceo uni- 

 carinato, mesothorace tricarinato lateribus piceis, abdominis fascia 

 basali pedibusque testaceis, alis anticis chalybeo sufFusis venis tr.ins- 

 versis plurirais, alis posticis nigricanti-cinereis. 



Male. Black. Head piceous; vertex short, mostly hidden by the 

 prothorax ; front very much broader than long, with testaceous and 

 slightly elevated borders, and with three very slight keels, the keel 

 on each side curved outward, and very remote from the middle one ; 

 face testaceous, with a middle keel. Prothorax piceous, arched, 

 more than four times as broad as long, with a middle keel. Meso- 

 thorax piceous on each side in front, and with three keels, the keel 

 on each side diverging from the middle one, with which it is con- 

 nected on the fore border. Abdomen with a testaceous band at the 

 base. Legs testaceous. Wings slightly hyaline. Fore wings with a 

 cbalybeous tinge ; eight lines of transverse veins, of which seven lines 

 are irregular, and the eighth nearly regular and submarginal ; two 

 apical veins forked. Hind wings blackish cinereous, with one line of 

 transverse veins. Length of the body 2^ lines, of the wings 9 lines. 



Hab. Batchian. 



178. RiCANiA NIGRA. Foem. Nigra, capite ferrugineo, fronte tri- 

 carinata apice nigricante, facie prothoraceque unicarinatis, meso- 

 thorace quinquecarinato, pedibus testaceis, pedibus posticis piceo 

 vittatis, alis obscure fuscis, alis anticis venis marginalibus fureatis. 



Female. Black. Head ferruginous ; vertex about eight times as broad 

 as long ; front much broader than long, blackish towards the face, 



