1900.] C((t(do(jii(' of the Coh'optrra of South. Afiica. HI 



inedian part of the apex, intermediate and posterior ones sli^Iitly 

 denticulate outwardly ; tarsi long, slender, basal one as long as the 

 tlu-ee following, terminal spurs very long and slender. 



The species of DrepcDiocerus are small insects, having the habits 

 of Oniticcllus. The males have a very long cephalic horn, and 

 two equally long prothoracic ones directed forward {D. kirbyi), or 

 are without cephalic horns, but liave a very deep longitudinal 

 furrow with the walls raised on two perpendicular walls {sulcicollis), 

 ii more or less deep sulcus in the centre {fastiditus, laticollis), or a 

 broad quadrate impression and three lateral ones {impressicollis). 



The main character distinguishing them from some species of 

 Oniticellus is the absence of scutellum. They are a form of 

 transition between the Ateuchides and the Coprides, for they 

 have eight-jointed antennas like Sisyphus, from which genus they 

 are not greatly removed. 



The genus is represented in the Zanzibar Island, and Abyssinia, 

 and also in India, China, Ceylon, and Java. 



Key to the Species. 



A-. Head with a cephalic horn in the male. 



Clypeus of s six-dentate, eniarginate in front, and bearing a 

 very long, curved, slender horn ; prothorax with two sub- 

 horizontal horns, and with several deep impressions in both 

 sexes ; elytra with two sharp carinse on each elytron . . . . kirhiji. 



A'. Head without cephalic horn. 



Prothorax of <? with a deep, median longitudinal furrow 

 edged on each side by a sharp, high carinate wall ; prothorax 

 of ? with a median, broad, longitudinal impression reaching 

 from the base to the median part ; elytra not carinate. . .. sulcicollis. 



Prothorax with a moderately deep median longitudinal 

 furrow and a narrower and parallel one on each side in the c? , 

 and having only a broad, quadrate impression in the ? ; elytra 

 with only one discoidal carina Jastiditns. 



Prothorax of <? very broadly am]Dliate laterally, and convex, 

 having a broad median groove and three little distinct 

 lateral impressions on each side of it, not ampliate in the 

 ? , but with the same median groove ; elytra with two sharp 

 t--ai'i"8e laticollis. 



Prothorax with a broad furrow with carinate edges ex- 

 tending from base to apex, narrowed in the anterior part, 

 and having a short carinule on each side of the anterior part 

 as well as a deep and broad lateral impression ; elytra with 

 the alternate intervals raised and the striae broadly 

 punctured impressicollis. 



