84 Descriptive Catolor/iie [1897. 



strong, second subquadrate, third to eighth monihform, sHghtly 

 transverse, ckib large, ninth and tenth trapezoid, subtransverse, 

 eleventh truncate at base and a little narrower than the preceding 

 one, thickened at apex and obtusely acuminate ; prothorax larger 

 than the head, cordate, foveate on each side past the median part ; 

 elytra much longer than broad, bifoveate at base, shoulders oblique, 

 subdentate, sides subparallel, no strige ; abdomen shorter than the 

 elytra, first dorsal segment much larger than the others, tri-impressed 

 at base and bicarinate in the middle ; metasternum depressed, last 

 ventral segment broadly but not deeply foveate. Male. Length 

 1*90 mm. 



Hab. Zambezia (Salisbury). Two examples. 



Gen. BATRISUS, Aube, 

 Mag. Zool., 1833, p. 45. 

 This genus, sensu 2)roprio, has no representative in Africa. 



Sub-Gen. TRABISUS, Raffr., 

 Rev. Entom., 1890, p. 110 ; loc. cit., 1894, p. 230. 



Body oblong, head more or less trapezoidal, eyes median ; 

 antennae distant at base and with eleven joints ; maxillary palpi 

 moderate, first joint inconspicuous, second slightly elongate, third 

 minute, fourth elongate, fusiform, but at times falciform ; prothorax 

 cordate, trisulcate lengthways ; first dorsal segment of abdomen 

 large, unicarinate only on the side of the base, the other segments 

 immarginate. 



This genus differs from Batnsus proper by the much more slender 

 form of the ultimate joint of the maxillary palpi, and the first dorsal 

 abdominal segment having one simple and short carina at base, the 

 abdomen being otherwise immarginate laterally. 



This sub-genus, which includes about nine species, is exclusively 

 African. 



Trabisus dregei, Aube. 



Batnsus dregei, Aub., Ann. Soc. Ent. France, 1844, p. 82. 



Oblong, chestnut brown, clothed with a yellowish pubescence ; 

 head broad, transverse, and having in front a large transverse im- 

 pression joined laterally to two fovese ; vertex raised, transverse, 

 punctate behind, briefly carinate ; last joint of palpi elongate, fusi- 

 form, sinuate and slightly falcate ; antennae robust, joints sub- 

 cylindrical oblong, eighth small, ninth and tenth larger, eleventh 

 much longer, acuminate ; prothorax cordate, a little narrower than 

 the head, median longitudinal sulcus nearly absent, lateral fovese 



