284 
Transactions of the Boyal Society of South Africa. 
The late Clem. Muller compared my examples of this species with Haag- 
Eutenberg's type, and I have ascertained in Paris that Castelnau's species 
is identical with Haag-Eutenberg's species. 
Length 6-8 mm. ; width 2-3^ mm. 
Hah. Cape Colony (neighbourhood of Cape Town). 
ISELMA PALLIDIPENNIS, Haag-Eut., 
Deuts. Entom. Zeitschr., 1879, p. 406. 
erythoptera, id. ibid., p. 407. 
It is very difficult to discriminate between this species and the 
preceding one, the difference consisting merely in the finer and more 
aciculate punctuation of the prothorax ; the elytra are pale brick-red with 
a greyish pubescence with which are black hairs intermixed, or redder 
brown with the pubescence more flavescent {erythroptera) ; the sculpture 
is that of I. rubripennis ; the inner spur of the hind tibiae, which is longer 
than the outer, is however more dilated, but this character varies. 
Length 7-11 mm. ; width 3-5 mm. 
Hab. Cape Colony (Namaqualand). 
ISELMA PLANIDORSIS, n. Sp. 
Black, elytra with a greyish bronze tinge ; body very thickly pubescent, 
the pubescence is appressed but mixed with it are black setulose hairs, 
erect and very long on the head, prothorax, and elytra ; antennae long, 
joints compressed; head and prothorax closely punctate, the punctures 
rugose ; prothorax elongated, sub-ovate, moderately attenuated in front, 
not very convex, the flavescent appressed pubescence forms a more 
distinct longitudinal line in the centre from base to apex ; elytra parallel 
but with the dorsal part depressed, their sculpture is the same as that of 
the prothorax, and they have thus a punctate shagreened appearance ; 
under side deeply aciculate punctate ; the hind spurs are of equal length, 
ampliated in an elongate spatulate form at some distance from the base 
and acuminate at the tip. 
Length 11-llJ mm. ; width 3| mm. 
Hab. Cape Colony (Clanwilliam). 
ZONITODEMA, n. gen., 
Plate XXII., figs. 10a, 10b. 
Mentum longer than broad, ampliate angulate laterally in the centre 
ligula as broad as the apex of the mentum and with the suture distinct, 
parallel, deeply and sub-triangularly incised in the anterior part for about 
