1900.] Catalogue of the Colcoptera of South Africa. 161 



verse clypeal and frontal carinae or impressions varying often in the 

 sexes and in the species ; eyes showing on the upper side through a 

 narrow longitudinal slit ; prothorax as long or nearly as long as the 

 elytra, usually plane on the upper side but more or less convex, 

 sometimes declivous in the anterior part, and with the sides sloping, 

 marginate, and with a deep, lateral fovea, the anterior part is also 

 marginate, the base is more or less aculeate at middle, and has a 

 central impression ; the elytra are not quite as wide as the base 

 of the prothorax which is rounded, they are more or less deeply 

 sinuate laterally beyond the humeral callus, often a little depressed 

 laterally along the sinuation, and a little attenuate towards the 

 apex, finely striate with the intervals more or less plane, and 

 without any trace of epipleura ; the pygidium is vertical, the 

 abdominal segments are very convex ; the metasternum is very 

 broad, somewhat convex ; the mesosternum is invisible at middle 

 in some species or distinct in others, and the prosternum has often 

 between the coxae a carinate or tubercular process varying in shape 

 according to the species ; the fore tibia3 are strongly quadri- dentate 

 outwardly, and the inner apical spur is long, curving a little down- 

 ward, and is situated at the inner angle ; the femora are thick and 

 carinate underneath, the anterior ones are very robust ; the inter- 

 mediate and posterior tibiae are compressed, tri- and bi-dentate out- 

 wardly ; the spurs are long ; the anterior tarsi are slender, the 

 intermediate and posterior ones are thicker, and compressed, and 

 the basal joint is somewhat w4der than the second, and as long 

 or longer than the three following joints. 



The number of Oniticcllus occurring in South Africa is seven. 

 Several of these have a very wide range in Africa. They dif!er 

 much in general appearance and in the shape of the prosternum 

 and mesosternum. The genus is represented in Southern Europe, 

 Africa (Northern Africa, Senegal, Abyssinia, ' Somaliland, German 

 East Africa, the African Lakes region, Togo, Guinea, and Angola), 

 Madagascar, India, China, Java, Sumatra ; and Gemminger and 

 Harold give Cuba as the liahitat of one species. 



Key to tlic Species. 



A-. Prosternmn with a more or less broadly triangular intercoxal 

 process overlapping the mesosternum. 

 B^. Median part of prosternum not visible. 

 C3. Prothorax quite plane. 



D-. Clypeus emarginate, not recurved. 



Head with a frontal carina and a transverse oblong im- 

 pression at the base ; prothorax and elytra blue and 



broadly edged with yellow egregius, 



11 



