and Species o/*GallerucIn8e. 419 



line and three linear vittge pitchy black ; the first of these, 

 much shorter than the others, is placed on the middle third of 

 the inner disk near its outer edge, the two others commence 

 on the outer disk at its base (where they unite and form an 

 elongate patch on the humeral callus), and extend downwards 

 to some distance below the middle of the elytron; the outer 

 vitta is slightly thickened and subcostate for its whole length, 

 and the space between the two vittge immediately below the 

 humeral callus is faintly excavated. 



MegalognatJia ventricosa. 



M. elongata, parallela, subtus cum capite nigra, nitida, abdomine 

 flavo ; supra flavo-fulva ; thorace transverso-quadrato ; scutello 

 piceo, griseo-sericeo ; elytris tenuiter punctatis, infra basin 

 transversim depressis, pone medium ventricosis. 



Mas thoracis disco piano, impunctato, apice modice obtuse elevato ; 

 elytris pone medium modice inflatis. 



Foem. thoracis disco irregulariter excavato, apice valde elevato, 

 cristam transversam formante ; elytris pone medium valde inflatis. 



Long. 3^ lin. 



Hob. Port Natal. 



Head exserted, obliquely porrect ; vertex impunctate ; en- 

 carpas raised, well defined, transverse, slightly curved, conti- 

 guous ; carina short, not reaching the lower margin of the 

 encarpas, wedged-shaped, acute ; labrum piceous ; antennee 

 entirely black. Thorax rather broader than long; sides 

 straight and parallel, converging at the apex ; basal margin 

 in front of the scutellum sinuate ; disk impunctate, flattened 

 in the J, the anterior border broadly thickened; disk deeply 

 and irregularly excavated in the ? , the apex abruptly ele- 

 vated and forming a strongly raised transverse ridge ; the 

 excavated disk is separated by two short ridges in front into 

 three longitudinal sulcations, one short and apical, the others 

 much broader, lateral, oblique, excurved at the apex, extend- 

 ing the whole length of the excavation, and confluent at the 

 base. Elytra narrowly oblong, nearly parallel, minutely 

 punctured, transversely depressed below the basilar space, the 

 latter slightly thickened ; hinder half of disk ventricose. 



Megalognatha suhcylindrica. 



M. elongata, suhcylindrica, fulva, nitida, antennis nigris ; thorace 

 transverso-quadrato ; elytris fortiter sat crebre punctatis, pone 

 medium vix elevatis. 



Mas thoracis disco piano, fortiter punctato, margine apicali incras- 

 sato, postice angulato ; antennis inorassatis, articulis intermediis 



28* 



