Descriptive Catalogue of the Coleoi:)tera of South Africa. 221 
bands and patches ; on each side there is a basal macule occupying nearly 
the whole dorsal part, and a smaller lateral one ; the anterior band is 
produced triangularly forward in the centre, the space of the hind border 
being correspondingly scooped ; the post-median band somewhat resembles 
the anterior, but is not so sharply dentate in the anterior border, and along 
the apex is a transverse, elongated patch reaching neither suture nor outer 
margin. 
Length 7^-13 J mm. ; width 3-4|- mm. 
Var. a. The basal dorsal macule coalesces close to the suture with 
the dorsal part of the anterior band, leaving a small sub-median spot of the 
background showing. 
Var. h. The yellowish red prothoracic band has invaded the whole 
anterior part, and the elytra are black with the exception of a small apical 
yellowish red transverse patch. 
Hah. Cape Colony (Namaqualand, Carnarvon, Prieska). 
Gen. DECATOMA, Cast., 
Plate XXIY., fig. 91. 
Hist. Nat. d. Ins., ii., 1840, p. 268. 
Antennae ten-jointed, last joint dilated, more or less ovoid. 
Key to the Species. 
A^ Antennse with the five basal joints black, the others yellow. 
Elytra with a dorsal basal band, patch or lunule, a lateral one, and 
two transverse, strongly sinuate or sinuate dentate bands. 
A longitudinal yellow band from the base to short of the median 
part, a sinuate median patch, and a rounded supra-apical one in the 
dorsal part, an elongated humeral and two hamate ones along the 
outer margin (pi. xxiv., fig. 92) catenata. 
An ovate rounded basal dorsal patch and a lateral spot, two bands 
of nearly equal size, the former with both margins broadly scooped, 
the latter scooped in the anterior margin and with the lower sinuate 
(pi. xxiv., figs. 93, 94) cafra. 
An arcuate basal dorsal patch the apex of which reaches the suture 
and is slightly connected there with an anterior band considerably 
narrowed from the middle to the suture, the hind margin of the 
narrowed part strongly bi-incised, posterior band similar in shape 
and size, but with the anterior margin also bi-incised (pi. xxiv., 
fig. 95) . . . . lunata. 
Basal lunule and the two transverse bands plainly separated, the 
two bands narrow, each bi-sinuate dentate on both edges (pi. xxiv., 
fig. 96) var. omega. 
