420 Mr. J. S. Baly on new Genera 



difformibus ; abdominis segmento apicali late concavo-emargi- 



nato. 

 Fcem. thoracis disco rude rugoso-puuctato, pone apicem trifoveolato, 



apice abrupte elevato, cristam angulatam formante ; antennis 



filiformibus ; abdominis segmento ultimo obtuse angulato. 

 Long. 3 lin. 



Hah. South Africa. 



Head strongly exserted and porrect in the (^ , less exserted 

 and more deflexed in the $ ; antennae in the $ filiform, the 

 third joint twice the length of the second, rather longer than 

 the fourth ; in the d the antennge are incrassate, the third to 

 the sixth joints obconic, tlie seventh and eighth irregularly 

 subclavate, the ninth and tenth subtrigonate, and the eleventh 

 cylindrical, its apex acute. Thorax subquadrate ; sides 

 straight and parallel from the base to beyond the middle, 

 thence obliquely rounded to the apex, the anterior angles mucro- 

 nate ; upper surface convex on tiie sides, flattened on the 

 middle disk, strongly but not very closely punctured in the 



S , the apex in the same sex thickened on its middle third, 

 the hinder border of the thickened portion angulate ; in the 



? the disk is coarsely rugose-punctate, and placed trans- 

 versely just behind the apex are three large deeply excavated 

 fovese ; the apical border is abruptly elevated and forms a 

 strongly raised angular ridge. The elytra are not ventri- 

 cose behind their middle, but gradually increase in convexity 

 from the base towards the apex ; surface sculptured as in 

 M. ventrtcosa. 



Megalognatha rufiventre. 



M. elongata, nigra, nitida, pectore griseo-sericeo, abdomine rufo ; 

 thorace rude punctato, ante apicem prof'unde transversim exea- 

 vato, apice abnipte elevato, cristam elevatam formante ; elytris 

 subopacis, piceo-nigris, fortiter et crebre punctatis. {Feem.) 



Long. 3 lin. 



Hah. Lake Nyassa. 



Head exserted, subporrect ; vertex granulose, impunctate ; 

 cncarpae large, well defined, trigonate ; carina strongly raised, 

 narrowly wedge-shaped; antennae filiform. Thorax rather 

 broader than long; sides rounded, the hinder angles acute, 

 the anterior ones mucronate ; upper surface deeply punctured, 

 the anterior half of the middle disk nearly covered with a 

 broad, slightly curved, deeply and irregularly excavated trans- 

 verse sulcation, which does not extend to the lateral margin : 

 immediately in front of this excavation is a strongly raised 

 angulate ridge. Elytra coarsely punctured, gradually increas- 

 ing in convexity from the base toAvards the apex. 



