PLATE XLII. 



Platymetopius undatus. (Page 16.) 



Fig. 1. — The male imago with extended wings. 



Fig. 1 a. — Another specimen, with closed elytra. 



Fig. 1 h. — Frons, clypeus, and other parts of the 

 face, viewed from below. The antennae are placed very 

 near to the frons. 



Fig. 1 c. — The abdomen of the female, seen from the 

 under-side, showing the rings, and particularly the 

 emarginate ring, above the genital valves ; with part of 

 the saw-like ovipositor between them. 



Fig. 1^. — Pygofer of the male, much magnified. 

 The two genital plates are seen above, and, below 

 these, the stout cauda is flanked on each side by a fine 

 curved style. The shaded portion below these parts 

 constitutes the processes, from between which probably 

 the penis is exserted. This complex apparatus is en- 

 closed within a horny sheath or box, furnished with 

 tufts of double bristles. 



Fig. 1 e. — The elytron with its small limbus. 



Fig. If. — The wing. Part of the membrane is seen 

 finely corrugated. 



Fig. Ig. — View of the hind tarsus. 



Fig. Ih. — Similar parts of the fore tarsus. 



Fig. 2. — Profile view of the head of Acocephalus 

 nervosus. 



Fig. 3. — Upper side of the head of the same, 

 showing the vertical carination. 



