10 Ti-auHdctions SoutJi African PJiUosopldcal Society. [vol. xii. 



Malacca, and in Africa (Senegal, Guinea, Gaboon, Somaliland, and 

 Nyassaland). 



Key to the Species. 



Lobe of the gente rounded laterally in front ; median i^art of 

 prothorax with a broad longitudinal groove enclosing a distinct 

 carina 



delcgorrjuei. 



Lobe of the gente diagonal, not rounded in front and very deeply 

 excavate ; median part of prothorax with a shallow, punctate median 

 groove Tcdidus. 



NiGIDIUS DELEGORGUEI, TllOmS., 



Plate XXXI., fig. 2. 

 Annal. Soc. Entom. d. Franc, 1862, p. 430. 



Male : Black, shining ; head not excavate, covered with round, 

 very closely set foveae, but the outer part of the horns on the 

 mandibles is smooth ; the apical angle of the head is very sharp 

 and dentate, under this angle there is also a sharp angular projection, 

 and the lobe of the genge which projects very much outside the eyes 

 is rounded in the anterior part ; prothorax nearly straight in front, 

 slightly emarginate in the anterior angle, sub-parallel for two-thirds 

 of the length and obliquely attenuate from there to the basal part, 

 and with the posterior angles much rounded; it is narrowly impressed 

 transversely along the anterior margin, and has in the centre of the 

 disk a deep sulcus stopping a httle short of both apex and base and 

 enclosing a longitudinal, very distinct carina nearly as long as the 

 sulcus ; the walls of the furrow are smooth and the whole disk is 

 covered with deep, closely set foveate punctures which are closer 

 and more rugose laterally, and the smooth walls of which in the 

 discoidal part form a few smooth areolets ; scutellum with a few 

 punctures ; elytra cylindrical with the humeral angle projecting 

 sharply, very sharply carinate and with the intervals moderately wide, 

 deep and filled with a row of broad but shallow foveate punctures, 

 and having another row of narrower and deeper punctures set against 

 the side of the intervening carinate costge ; costae, abdomen, and 

 sternum deeply and closely foveolato-punctate, outer face of anterior 

 and posterior femora only shghtly punctate, while that of the inter- 

 mediate ones is closely foveolate. 



Female : The female is a little smaller than the male and similar 



