404 Transactions Smith, African Philosophical Society, [vol. xiii. 



Gen. MELINESTHES, Kraatz, 

 Ent. Monatsbl., xii., 1880, p. 24. 



Mentum broadly scooped laterally for the insertion of the palpi, 

 deeply and broadly emarginate in front ; maxillae robust, inner lobe 

 ending in a long, hamate tooth, upper lobe very small and produced 

 in two sharply hamate teeth ; antenna! club slightly longer than the 

 pedicel in the $ , equal in length in the $ ; clypeus simple in both 

 sexes, or with two more or less parallel, porrect horns in the male ; 

 prothorax diagonally ampliated laterally from apex to base, and 

 slightly sinuate past the middle, base slightly slanting and arcuate 

 above the scutellum which is grooved on each side; elytra elongated, 

 narrower at apex than at base ; mesosternum produced into a long, 

 sharp process, curving more or less strongly upwards and slightly 

 pubescent at tip ; anterior tibiae uni- or bi-dentate in the $ , bi- or 

 tri-dentate in the $ ; all the tibia? fringed inwardly with somewhat 

 long hairs. 



Of the 7 species included in this genus one must be removed from 

 it (serripcs) ; one falls into synonomy (calvipes), a third can only be 

 regarded as a varietal form {flavipennis), and the differences between 

 two (umbonata and exMs) are so small, that I feel somewhat diffident 

 in considering them as distinct species ; the seventh occurs in 

 British East Africa. 



Key to the Species. 



A 3 . Clypeus simple in the male. 



B 2 . Frontal part of both sexes pubescent. 



Mesosternal process very Ion", curved and impunctate . . umbonata. 



Mesostemal process moderately long, closely punctate at base exilis. 



A". Clypeus with two porrect horns in the <j . 



B 1 . Frontal part glabrous in both sexes. 



Clypeal boms of j diverging, and broadly dilated singly at 



:i l"-' x (dgoensis. 



Clypeal boms of i parallel and with the apical part curved 

 upwards like a hook hamula. 



Melinesthbs umbonata, Gor. and Perch., 

 Monogr., p. Ill, pi. 22, fig. 1. 

 Var. atricollis, Jans., Cist. Entom., hi., 1885, p. 139. 

 Var. vitticollis, K torn. Mfonatsb., ii., 1880, p. 24. 



I'll, with the exception of the apical part of the clypeus, the 

 tst part of the surface of the prothorax, and the under side 



