Descriptive Catalogue of the Coleoptera of South Africa. 229 
on each side a narrow humeral longitudinal black band, two series of three 
equi- distant spots or patches disposed diagonally from the suture to the 
outer margin, and a supra-apical diagonal arcuate patch consisting 
evidently of two gglomerated apatches the outer of which reaches the 
outer margin which from there to the suture is moderately narrowly 
black. Easily recognised by the colour of the antennae. 
Length 7-J-13 mm. ; width 3-4^ mm. 
Hah. Transvaal (Potchefstroom, Waterberg, Zoutpansberg) ; Southern 
Ehodesia (Bulawayo, Plumtree, Gwanda). 
Decatoma undata, Thunb., 
Plate XXIV., fig. 106. 
Dissert. Nov. Ins. Sp., vi., p. 114, f. 17 ; Billb., Mon.,p. 40, pi. 4, figs, 16, 
17; Mars., Mon., p. 573, pi. 6, fig. 2. 
undatobifasciata, De Geer., Ins., vii., p. 649, pi. 48, figs. 15, 16. 
Black, clothed with a black pubescence, but flavescent on the narrow 
yellow bands of the elytra and in the posterior part of the same ; antennae 
black, the apical joint swollen outwardly at about the median part, and on 
that account sharply acuminate at the apex ; head and prothorax deeply 
and closely punctulate, the punctures plainly rugose, frontal part with an 
indistinct smooth patch ; elytra deeply punctate shagreened, each with a 
yellow basal dorsal lunule the arcuate patch of which reaches the suture, 
and a narrow humeral line continued along the outer margin and con- 
nected there with the very narrow ante-median yellow band both edges of 
which are broadly but not very deeply bi-sinuate, the post-median band is 
not broader than the anterior, and has very nearly the same shape, the 
part of the anterior band abutting on the outer margin is occasionally 
prolonged behind there for a short distance. The last joint of the antennae 
is strongly swollen outwardly, more so than in any other species of South 
African Decatoma. 
Length 9|- mm. ; width 3^ mm. 
Hab. Cape Colony (Cape Town, Stellenbosch, Paarl, Worcester, 
Ceres, Malmesbury). 
Decatoma stellenboschiana, n. sp., 
Plate XXIV., fig. 107. 
This may prove to be only a varietal form of D. undata, but the punc- 
tuation of the elytra is deeper, broader, more irregular, and the latter are 
therefore more shagreened ; on each elytron the basal dorsal yellow lunule 
has become coalescent along the suture and also on the dorsal part> 
the anterior band including thus between the median dorsal part and the 
