1900.] Catalogue of the Coleoptera of SoutJi Africa. 34? 



of Goprls from other parts of Africa, with the exception of C. glohuli- 

 pcnnis, which has a very distinct aspect of its own, and perhaps 

 also of G. bootes ; the latter, however, has allies in C. plutus, C. 

 pollux, &c., whereas C. globnlipennis has none known to me. I 

 have divided the genus into two sections according to the cephalic horn 

 heing laminate transversely at base and cylindrical at tip, or not. I 

 have also made use, in one of the sections including species with a 

 vertically truncate prothorax and a median dorsal lobe, of the shape 

 of the apical spur of the anterior tibiae, according to it being normal, 

 i.e., slightly bent outwardly in the same direction as the apical outer 

 tooth and acute at tip, or flattened, straight and curving inwardly 

 at tip. This character helps a good deal in discriminating between 

 species which at first sight seem to be identical, such as G. orion, 

 G. misellus, &c., from G. amijntor, contractus, &c. On the whole 

 the genus can be divided into three groups : the first one includes 

 the species with a truncate prothorax lobate in the middle and 

 having on each side of it a deep, sub-lateral excavation flanked or 

 not by a compressed tooth or horn : the second includes such 

 species in which the prothorax is excavate longitudinally : and in 

 the third, which comprises only two species, the prothorax is simple 

 or has a small, median tubercle. 



_^ In til', Key to the Species. 



.\i'. Prothorax truncate in front, deeply excavated on each side, 

 the median part is lohate and more or less sharply angular. 

 B. 'Males with a cephalic horn. 



0=^. Cephalic horn not laminate at base and cylindrical at tip. 



Ds. Apical spur of anterior tibiae not curved inwardly at tip. 



a*. Median lobe vertical, slightly emarginate in the 



centre and more or less quadri-dentate, outer teeth 



not divaricating. 



Clypeus deeply incised in the middle and on each 

 side of the median incision, strongly punctured, 

 anterior edges of median lobe sloping and sharply 

 carinate ; median part of thorax smooth, median 

 teeth of ridge very small, strise deeply punctured, 

 intervals smooth ; size small maccr. 



Clypeus incised in the middle ; anterior edges of 

 median lobe straight, sharp, median teeth of ridge very 

 small, and anterior part smooth ; stria impunctate ; 

 size large (pi. xxxiii., fig. 18) laticornifi. 



Clypeus incised in the middle, anterior edges of 

 median lobe sharply carinate and ending in a small 



