1907.] Catalogue of the Colcoptcra of South Africa. 313 



scales ; prothorax very elongated, strigillate longitudinally, and with 

 a median raised line, moderately densely squamose on the disk and 

 with denser scaly hairs laterally behind ; scutellum strigose punctate, 

 glabrous ; elytra parallel, vertical laterally, having on each side five 

 discoidal striae and a series of very short squamose hairs in each 

 interval, and also on the deflexed sides, slightly in front of the 

 median part is a transverse band of fiavous scales ; the propygidium 

 is almost completely uncovered, the pygidium is vertical in the male, 

 sloping and convex in the female, and both are clothed with con- 

 tiguous golden-yellow scales, like the abdomen and part of the 

 pectus ; legs and antennae slightly rufescent. 



This description of the $ is made from an example from Beira, 

 Mozambique. In another example, which I take to be a ? from 

 Sebakwe in Southern Ehodesia, and which is in a bad state of 

 preservation, the scales are much more scattered, and there are no 

 traces of the two discoidal elytral bands. 



Length 4^ mm. ; width 2 mm. 



Tkibe MYODERMLNL 



The insects included in this Tribe differ from the Tkichiini 

 in having much shorter tarsi ; the clypeus, which is of a very 

 variable shape, differs from that of the Trichiini, the labial palps are 

 inserted in a deep, lateral cavity, the maxillae are more robust, and 

 in most cases plurisetose only at apex instead of being penicillate, 

 the antennal club is not longer than the pedicel in the $ , the 

 lateral part of the base of the prothorax is sharp, but also 

 occasionally slightly rounded (Xiphoscelidus) and the median part 

 is not arcuate ; the scutellem is cordiform ; the elytra moderately 

 plane or convex ; the basal joint of hind tarsi is as long as or 

 longer than the second, ampliate and sub-nodose at apex, or 

 sometimes angular ; the apical part of the posterior tibiae is not 

 dentate or spinose ; and there is no mesosternal process. 



This Tribe, which seems to consist of termitobious insects, must 

 be divided into two groups. In the first, the external edge of the 

 hind coxae, or side pieces, do not project beyond the edge of 

 the abdomen (Myodcrmidcs), whereas in the second {Elpidides), the 

 edge of the coxae does plainly project, this being due to the great 

 development of the hind femora in both sexes. One of the genera, 

 Diploa, was included in the Tribe Cetonini (Prototypic Cetonides) 

 by Kolbe, and interpolated by him between Hetcroclita and 

 Xiphoscelis, but it differs greatly from the latter on account of the 

 shape of the scutellum, and the absence of sternal process. 



