382 Transactions South African Philosophical Society, [vol. xiii. 



Gen. DICRANORRHINA, Burm., 

 Handb. d. Entomol., iii., 1842, p. 187. 



Mentum as broad as long, greatly ampliate laterally in the centre, 

 ligular part very little depressed in the outer face, deeply, somewhat 

 narrowly notched in the centre, cavity of labial palps very narrow 

 and quite lateral, the outer margin hiding the inner to such an 

 extent that the palps look as if they were inserted in the inner part ; 

 maxillae robust, inner lobe simple, densely fringed with hairs, upper 

 lobe very long, styliform very slightly hooked at the tip, densely 

 hairy along the outer margin ; antennal club shorter than the 

 pedicel in both sexes ; clypeus of $ strongly bi-angulate on each side, 

 and produced in the centre in a curved horn broadly dilated and 

 trifidous at apex, head with a short, sub-porrect horn on each side 

 above the eye ; in the ? the clypeus is trapezoid, carinate on each 

 side above the somewhat depressed outer margin, slightly emargi- 

 nate at apex with the angles of the emargination weakly angular ; 

 prothorax diagonally ampliated laterally from the apex to about the 

 median part, nearly parallel, but slightly sinuate thence to the 

 moderately rounded basal angle, base very little sinuate on each 

 side, and almost straight above the scutellum ; elytra slightly wider 

 than the prothorax at the base, elongate, attenuate behind, being 

 at apex only one-half the width of the base ; not sinuate laterally 

 and with the side pieces of the metasternum not visible ; pygidium 

 sloping ; metasternal process horizontal, triangularly aculeate ; 

 anterior tibiae of $■ strongly dentate inwardly, merely angular at 

 apex outwardly, fifth joint of anterior tarsi with a thick pencil 

 of hairs underneath ; in the ? the anterior tibiae are plainly 

 3-dentate, and the anterior tarsi glabrous. 



The genus is represented on the East and West Coasts of Africa, 

 and a colour variety of the South African species reaches as far 

 north as the Zanzibar mainland. 



DlCRANORRHINA DERBYANA, Westw., 



Arcan. Entom., i., p. 173, pi. 42, $ 2 . 



Male : Green with a reddish-golden tinge in the basal part of the 

 prothorax and on the under side, shiny, glabrous, tarsi, and antennae 

 black ; head with the trifid recurved part of the clypeai horn and 

 the two occipital sub-porrect horns black, the rest of the surface 

 is covered with a cretaceous coating ; prothorax extremely finely 

 aciculate on the whole surface and bearing also somewhat scattered 

 punctures ; the sides have a very broad cretaceous band ; scutellum 



