90 MR. R. W, JACK OX THE LARV.E 



legs strongly fossorial. Auterioi* tarsi flat and broad, with a 

 projection on the outer margin (see Plate VI. fig. 9). Spines 

 on inner margin of anterior legs : — 



Tarsal claw none. 



Tibia 1, moderately prominent. 



Femur and trochauter: numerous, short, Hat, and often fused together. 



Dorsal surface of anal segment concave in profile, owing 

 to strong development of spine-bearing ridge on posterior 

 and latero-posterior margin. Chitinou^ processes in the 

 form of short, erect spines, extending roughly round the 

 margin of the posterior half of the segment. Two terminal 

 spines more strongly developed. Segment generally very 

 hairy. Pseudopodia prominent and armed with spines ; a 

 rounded projection anterior to {)seudopodium on either side 

 also bears a number of spines. 



The larva shows great resemblance to that of Psammodes, 

 but is readily distinguishable by its hairy appearance and 

 the greater development of the spinous ridge on the hind 

 margfin of the anal segment. 



The food habits of the larvse are apparently similar to 

 those of Psammodes. The full life-history of this species 

 has not been followed, but the beetles emerge at the 

 commencement of the rains and egg-laying takes place 

 immediately. The genus is commonest on the sand veld, 

 but occurs also on the diorite. 



(4) Trachynotus. — Species studied determined as T. 

 geniculatus, Haag (Plate IV. fig. 6; Plate V. 

 fig. 6 ; Plate VI. fig. 6). 



Ovum, — Dimensions 2 mm. x 1 mm. Opaque white ; 

 tapering at ends. 



Larva. — Attains a length of ,'^0 mm. Colour whitish 

 yellow (with more chitinous parts reddish yellow) to reddish 

 yellow. General form very slightly flattened dorso-ventrally; 

 less strongly constricted between the segments than in 

 preceding genera. General appearance smooth. Mandibles 

 project beyond labrum. Anterior pairs of legs strongly 



