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



white band ; abdominal segments with a non-interrupted silvery- 

 white band running from the upper side to the centre ; pectus and 

 outer part of femora almost wholly white, especially the former; 

 external process compressed laterally, aculeate, truncate in front and 

 deflexed, inner part of legs somewhat densely fringed with light 

 fulvescent hairs. 



This species occurs in great abundance in the northern part of the 

 South African area from east to west. It greatly resembles the 

 lighter-coloured examples of P. rufa, which occurs also in the same 

 localities. It is, however, easily distinguished by the shape of the 

 sternal process, and that of the genitalia is very different. It does 

 not seem to have been met with north of the Zambesi. 



Length 19-22 mm. ; width 11-13 mm. 



Pachnoda (Qonostethus) impressa, Goldf. 



Enum. Ins. cap., 1805, p. 42, pi. 1, fig. 6. 



Gor. and Perch., Monogr., p. 178, pi. 31, fig. 5. 



colorata, Schonh., Syn. Ins., i., 3, p. 129. 



leonina, MacLeay, 111. Zool. Afric, iii., p. 50, pi. 1. 



Very dark green, sub-opaque on the upper side, brownish-red 

 underneath ; clypeus rufescent, moderately emarginate in front, 

 whole frontal part dark green ; elytra with a fairly broad marginal 

 yellow band enclosing past the median part a quadrate patch of the 

 background, reduced sometimes to a mere spot, nearly in a line with 

 it is a transverse yellow band reaching the suture and divided from 

 the lateral yellow band by a narrow or somewhat moderately broad 

 longitudinal green band ; pygidium green and with seven rufescent 

 white macules ; abdominal segments each with an upper rufescent 

 macule and a lateral band of the same colour ; pectus and side- 

 pieces maculated with yellow, antennae and legs rufescent; clypeus 

 closely punctulate ; head with more distant punctures ; the very 

 remote punctures on the prothorax are partly hidden by the dull 

 coating, the anterior margin is distinctly sub-tuberculate in the 

 centre; scutellum impunctate, slightly impressed longitudinally at 

 apex ; elytra with a plain dorsal costule in the posterior part only, 

 the discoidal part is distinctly punctate seriate, but not the sides ; 

 lower part of the body sparsely punctate along the sides ; femora 

 strigillate, tibiae punctate ; sternal process, aculeate, compressed 

 laterally, deflexed and truncate at the apex. 



Length 20-22 mm. ; width 11 L2 mm. 



I iih. The whole of South Africa except the South-Western or 

 KaiToid districts of the Cape Colony. 



