284 Annals of the South African Museum. 



flavescent ; the eight penultimate antennal joints are very strongly 

 serrate, and in the male almost pectinate, even more so than in 

 M. serrata, Gerst. 



A very distinct species. 



Length 23-24| mm. ; width 8|-9 mm. 



Hob. Mozambique (Lourenco-Marques), L. Peringuey ; (Rikatla), 

 Rev. H. Junod. 



GEN. DECATOMA, Cast. 

 DECATOMA VEXATOK, n. sp. 



Black ; antennal joints black, strongly serrate ; head and pro- 

 thorax clothed with a silky flavescent pubescence ; elytra with three 

 transverse yellow bands extending from the suture to the outer 

 margin, and a round supra-apical patch throwing out a small ramus 

 towards the outer margin, the basal band, the hind edge of which is 

 strongly bi-sinuate, coalesces with the antemedian band, which is 

 strongly tri-sinuate and emits, along the outer margin, a somewhat 

 long ramus which does not quite reach the post-median band, which 

 is also strongly tri-sinuate, the part along the outer margin is also 

 produced towards the posterior part ; the sculpture is that of M. 

 aliena, Paring., but in the latter the transverse yellow bands on the 

 elytra are not so jagged, nor are they produced laterally along the 

 outer margin, and the supra-apical patch does not emit a ranius ; 

 the disposition of these bands on the elytra are not unlike those of 

 M. lacerata, Pering., but the bands themselves are narrower, and 

 the sculpture is different. The lateral part of the bands and also 

 the apical patches are somewhat orange instead of pale yellow, as 

 on the disk. 



Length 10 mm. ; width 4 mm. 



Hab. Transvaal (Pietersburg). A. J. T. Janse. 



DECATOMA TRANSVAALICA, n. sp. 



Black, with the head, prothorax, scutellum, abdomen, pectus, and 

 legs clothed with a very dense, silky, yellowish pubescence ; antennas 

 black with the exception of the third, fourth, and fifth joints, which 

 are red ; head somewhat broadly and deeply punctate, and with a 

 faint, short, smooth line abutting on the transverse impression of 

 the epistome ; prothorax of the normal shape, covered with con- 

 tiguous, deep, not broad but slightly scrobiculate punctures, and 

 having a very slight median impression ; scutellum closely punctate ; 

 elytra sub-cylindrical, hardly wider across the posterior part than at 



