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232 T7''ansactions of the Boyal Society of South Africa. 
The pattern of the elytra is not unhke that of a varietal form of 
D. africana, but the bands and lateral patch are not connected along the 
outer margin, and the median prolongation behind of the hind border of 
the posterior band is very different. I have seen two examples only, and 
on that account I hesitate to propose this variety as a valid species. 
Decatoma quadriguttata, Wulf., 
Plate XXIV., fig. 112. 
Insect. Capens., p. 18, pi. 1, fig. la b; Billb., Monogr., p. 44, pi. v., fig. 4. 
nigricornis, Mars., Monogr., p. 577, pi. 6, fig. 5. 
Black, clothed underneath with a black pubescence ; on the prothorax 
the pubescence consists of black erect hairs mixed with a few flavescent 
greyish ones ; antennae black, the last joint elongated, acute at tip ; head 
and prothorax closely scrobiculate punctate ; elytra closely shagreened 
and each with three moderately distinct costules ; they have on each side 
a round basal dorsal pale yellow patch, a briefly elongated lateral one, an 
anterior somewhat narrow band reaching from the suture to the outer 
margin, bi-sinuate on each side or slightly strangulate at about the 
middle, and a post-median one broader than the anterior, scooped in the 
centre of the anterior border, bi-incised or less deeply scooped in the pos- 
terior, the part of the band abutting on the outer margin narrower than 
that abutting on the suture. 
Var. MiNUTA, 
Plate XXIV., fig. 113. 
Casteln., Hist. Nat. Ins., ii., 1840, p. 268; Billb., Monogr., p. 44, pi. v., 
fig. 3 ; Mars., Monogr., pi. 6, fig. 6. 
^-guttata, Mars, nec Wulf., pi. 6, fig. 7. 
Similar to the type ; the two basal patches are alike, but the anterior 
and post-median patches are very distinctly interrupted in the centre of 
the dorsal part. These yellow markings form thus a juxta-sutural series 
of three sub-transverse patches and a marginal series of slightly narrower, 
and with the exception of the humeral, more transverse patches. 
Length 10-15 mm. ; width 4-6 mm. 
Hah. Cape Colony (Cape Town, Stellenbosch, Paarl, Worcester). 
Decatoma namaqua, n. sp., 
Plate XXIV., fig. 114. 
Like D. quadriguttata, but the punctures on the head, and the pro- 
thorax especially, are somewhat wider and coarser, and on the latter is a 
