1904. ] Catalogue of the Coleoptera of South Africa. 183 
Episterna broad or very broad, and on a level with the epimera Leucopholides, 
A‘. Labrum transverse. Anterior coxie sub-vertical at apex, 
episterna narrow 
-. Diplotaxides. 
Burmeister divided the Melolonthini in two groups; in the first 
one he included all the species in which the anterior margin of the 
prothorax is lined with a narrow membrane and in the second all the 
species in which this margin is either fringed with dense hairs or 
completely hairless. Kolbe, however, has very rightly pointed out * 
that these characters are too variable to be absolutely relied upon, 
and he has proposed another division based on the size and the plane 
of the episterna and epimera of the metasternum, a division which I 
have adopted, although in the genus Beriqua it does not apply. 
Group SCHIZONYCHIDES. 
The South African representatives of this group can be divided 
into two sections; in the first one, or true SCHIZONYCHIDES, are 
placed all the genera closely connected with the genus Schizonycha, 
and which, with very few exceptions (Atys, Suntemnonycha), have 
the third antennal joint longer than the fourth; they are cha- 
racterised also by an arcuate clypeus, seldom straight laterally 
(Spathoschyza), and not incised or strongly sinuate in the centre of 
the anterior margin; this first division is very homogeneous, and is 
connected with the Tribe Sparrmannini by the genera Beriqua and 
Glyptoglossa, in which the epimera are broader than in the other 
South African Scuizonycuipes. In Glyptoglossa the basal joints of 
the anterior tibia are as spinose inwardly at apex as in the Sparr- 
mannini, and this character is also found, although in a lesser degree, 
in some species of Schizonycha. In this first section the generic 
differences are often small, and consist in the presence or absence of 
clypeal and frontal sutures or keels, coupled with the number of 
antennal joints ; the species are so remarkably alike that without an 
examination of the male’s genital organs the identification becomes 
almost an impossibility; in the second section, Pstuonycuipes, I 
have placed the genera in which the third antennal joint is not 
plainly longer than the fourth ; this character also coincides with a 
more or less porrect clypeus, the angles of which are generally a 
little rounded laterally and the anterior margin incised or sinuate 
in front. 
* Beitz. z. Kenntn. der Melolonthiden, Ann. Soc. Ent. d. Belg., vol. 38, 1894. 
