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



Antennal club much longer than the pedicel ; clypeus 

 parallel for two-thirds of the length, incised and con- 

 tracted thence into a triangular process strongly 

 hamate on each side ; no white patches on pygidium nasuta. 



A 1 . Clypeus moderately long ; antennal club also moderately 

 long. 



Clypeus not incised laterally luridipennis. 



Key to the Species ( 2 ? ) . 

 Elytra black. 



Clypeus short, quadrate, sharply incised at apex cuspidata. 



Clypeus long, sub-oblong, deeply sinuate at apex rostrata. 



Elytra testaceous yellow. 



Clypeus long, sub-parallel, truncate at apex, and incised in 



the centre nasuta. 



ISCHNOSTOMA CUSPIDATA, Fabl\, 



Ent. Syst., i., 2, p. 129. 



$ albomarginata, Herbst., Kaf., iii., p. 174, pi. 27, fig. 8. 



S erythropus, Lin., Ed. Gmel., i., 4, p. 1581. 



$ pica, McLeay, Illus. Zool. S. Afric, 1849, p. 44, pi. i. 



$ albomaculata, Gor. and Perch., Mon. Cet., p. 302, pi. 58, fig. 5. 



$ tristis, Sch., Ann. Fr., 1844, p. 393. 



$ heteroclita, G. and Perch., Mon. Cet., p. 303, pi. 58, fig. 6. 



$ ruftpes, Fab., Mant., i., p. 27. 



•? cordata, Fabr., Ent. Syst., i., 2, p. 129. 



? lundi, Lin., Ed. Gmel., i., 4, p. 1581. 



2 nobilis, Fab., Mant. Ins., i., p. 27. 



2 spatulipes, McLeay, 111. Zool. S. Afric, 1849, p. 44, pi. 1. 



Male : Black, opaque, outer margin of prothorax and elytra having 

 a narrow white band ; pygidium with two apical, small white patches ; 

 clypeus four times as long as the head, strongly and highly carinate 

 above the insertion of the antennae, and strongly sinuate there, deeply 

 and broadly incised laterally at about one- third of the length, with the 

 lateral basal part of the incision produced into a short longitudinal 

 spine, triangularly ampliated beyond the incision and acuminate 

 thence to the apex where it is truncate and slightly sinuate and as 

 broad there as in the incised part ; this is the typical form, but in the 

 lesser development the lateral part of the reflexed margin of the 

 clypeus is only slightly bi-sinuate, and slightly angular at about 

 one-third of the length (heteroclita, G. and P.) or only a little longer 

 than broad, merely sinuate and slightly less narrowed towards the 



