362 Transactions South African Philosophical Society, [vol. xiii. 



with white ; the brownish-red indumentum is opaque. Clypeus 

 glabrous, deeply punctulate, the punctures not closely set, frontal 

 part clothed with a fairly long ashy-grey pubescence ; the prothorax 

 is moderately closely punctulate, and the punctures, although hidden 

 by the opaque indumentum, bear each a long greyish or whitish 

 seta ; scutellum impunctate ; elytra with the humeral costa reaching 

 to about the median part, and having also a dorsal one reaching 

 slightly further down, this dorsal costa is oftener than not nearly 

 obliterated, the intervals are filled with numerous, shallow sub- 

 seriaue punctures, all the dorsal ones of which bear a long erect 

 greyish or whitish seta ; pygidium with a long greyish or whitish 

 pubescence; pectus, edge of the dorsal part of abdomen, and also the 

 sides of the ventral part clothed with a long greyish or greyish-white 

 pubescence ; legs and under side shiny. 



The opaque indumentum, the white markings, especially those on 

 the elytra, and the dorsal setae are very often partly rubbed off 

 (T. oculata, hottentota, fusco-rubra). These examples are then very 

 different from the newly emerged imagoes. 



Length 16-19 mm. ; width 9-10 mm. 



Hob. Cape Colony (Cape Town, Stellenbosch, Paarl, Malmesbury, 

 Worcester, Ceres, Caledon). 



Tmchostetha bicolor, n. sp. 



Black, opaque on the upper side, but having on each elytron an 

 elongated brownish-red band extending from the base to about the 

 median part, and situated between the humeral costa and the 

 slightly raised dorsal one ; the thorax, elytra, and pygidium are 

 splashed with white dots and macules as in T. capensis, with which 

 it might be easily confounded, except for the constant rufescent 

 patch on the elytra. The shape of the genital clasps of the male 

 differs, however, considerably from that of T. albopicta, signata, and 

 'capensis, in not being acuminate or attenuate at apex, but almost 

 truncate there. 



Length 18-19 mm. ; width 10-11 mm. 



This species has only been met with, to my knowledge, in the 

 neighbourhood of Saldanha Bay, near Cape Town. 



Tmchostetha albopicta, Gor. and Perch., 



Plate XLIIL, fig. 12. 



Monogr. d. Cet., p. 256, pi. 49, fig. 1. 



This species might be taken for a black variety of T. capensis, 

 but the shape of the genitalia of the male is different. Black, 



