1896.] of the Coleoptcra of South Africa. 187 



second costa, two transverse patches extending from the second to 

 the eighth costa — the first one is between the basal and median part, 

 the posterior one between the median and apical part ; the outer 

 margin and also the suture are faintly reddish ; under side pale 

 yellow; tip and base of abdomen infuscate; legs pale yellowy with the 

 knees infuscate. 



Hah. Natal (D'Urban, Frere), Zambezia (Salisbury). 



Mastax extremus. 



Head, prothorax, and the three basal joints of antennae bright 

 red ; prothorax rugose, hardly grooved in the centre ; elytra 

 slightly costate on each side of the suture only, black, opaque, and 

 having on each side a semicircular white band reaching from the 

 scutellum to the outer margin, and a post-median patch of the same 

 colour reaching from the median part of the disk to very near the 

 outer margin ; legs infuscate, with the median part of the tibiae 

 ilavescent. 



Size and colouring of M. ornatcllus, but the prothorax is more 

 shagreened, and hardly grooved behind, while it is distinctly and 

 broadly so in M. ornatellus ; the elytra are hardly costate, and this 

 along the suture only, and the anterior white patch reaches from the 

 scutellum to the outer margin, forming almost a half-moon. Length 

 4 mm. ; width 2^ mm. 



Hah. Cape Colony (Grahamstown, Uitenhage). 



Mastax albonotatus, P6r., 

 Trans. S. Afric. Phil. Soc, vol. iv., 1885, p. 76. 



Totally black, moderately shining ; head and prothorax shagreened ; 

 elytra much broader at the base than the prothorax, slightly ampli- 

 ated in the centre, with two raised costse on each side along the 

 suture, which is also costate, the outer part of the disk covered with 

 a velvety black tomentum, leaving the basal part of the third, fourth, 

 and fifth costae uncovered, and two transverse, rounded, white spots 

 at the basal edge of the velvety patch, and a transverse band between 

 the median and apical parts, extending from near the margin to about 

 the centre of the disk ; in some examples there is a short reddish 

 line on the basal part of the first and second costse on each side, and 

 the transverse postical white band is sometimes interrupted in the 

 centre ; under side infuscate. Length 4-4|- mm. ; width 2 mm. 



Differs from the preceding species mostly in colouring ; the velvety 

 dorsal patch on the elytra is wanting in M. ornatellus, but I have 

 seen a faint trace of it in an example from D'Urban, Natal. 



Hah. Cape Colony (Cape Town). 



