180 



Megakhaphis yen. nov. 



Genus Macrorhaphidi valde aitine. 

 Caput apice subtruncatum, lobis œquilon^is. 



Rostrum articulo secundo quartoque suba>.quilongis, singulatim tertio longioribiis. 

 Thorax marginibus lateralibus subcallosis. vix transversim rugosus. 

 Scutellum parte apicali retrorsum angustata, frenis ultra médium scutelli continuatis. 

 Carina mcsosternalis mediocris, nec laia noc sulcata. 



Venter spina basali longa compressa armatus, apud marem maculis sericeis 

 haud instructus. 



Femora antica subius apicem versus spina parva armata. 

 Tibiai anticjB vix dilatatte. 

 Membrana costis 8 instructa. 



There is no doubt tliat Megarhaphis is closely allied to Dallas's genus Macro- 

 rhaphis; but it seems to me that the characters pointed out al)ove are of impor- 

 tance sufïicient to necessitate the création of a new genus for the species described 

 l)elow. The différences in the comparative proportions of the joints of the rostrum, 

 tlie narrow and unfurrowed keel of the mesosternum, tlie absence of tlie two silky 

 spots on the venter of the maie, and other points will at once distinguish Mega- 

 rha'phis from Macrorhaphis . 



M. WOLLASTONI sp. n. 



M. elongata, rufo-brunnea, rude et dense nigro punctata; thoracis angulis late- 

 ralibus prominuUs obtusiusculis; [ledibus corpore concoloribus ; antennis paullo palli- 

 dioribus; capitis lineis duabus longitudinalibus ocellas includentibus, marginibus tyli, 

 vitta centrali capitis subtus sternique, maculis marginalibus dorsi abdominis, nebu- 

 lisque ventris nigris ; spina basali ventrali ad apicem testacea ; meml)rana fasco 

 brunnea. Capitis lineis duabus longitudinalibus inter ocellos ad ai)icem currentibus, 

 margine interiore orbitis, tyloque, pronoti callis irregularibus prope marginem anti- 

 cum, necnon carina longitudinal! angusta, scutelli linea apicali longitudinali subelevata. 

 corii spatiis irregularibus (una ad médium, altéra propre apicem) haud vel vix punc- 

 tatis ; sterno ventreque minus dense punctatis, carina ventris levigata ; scutello fovea 

 parva sed profunda utrinque ad basin prope pronoti angulos posticos sat productc^ 

 instructo. 



c? Long. 13, latit. G mia. 



Hab. ; St^-Helena : West Lodge (spécimen unicum). 



— " Megarhaphis Wollasloni agrées in many jioints of sculpture, etc., with the 

 description of Macrorhaphis (?) actita Dali. (List, I, 88, 2), from Congo, which 

 species may perhaps pertain to the genus Megarhaphis. r. 



Bergroth en 1893 a le premier fait remarquer fait remanpier que la carène 

 mésosternale de M. acuta Dali, ne présente pas de sillon et d'autre part que le cT 



