A DIPTEROUS ANT-LION. 



761 



The thorax is brown, edged with white down, and a large quan- 

 tity of similar down grows on its under surface. A patch of 



^ 



Fig. 504. — Asilus curiarius. 

 (Brown, black, and white.) 



grey-white hair occupies tlie front of the head . 

 pale brown. 



The winos 



Of the family Leptidaj 

 two examples will suffice. 

 These are also predacious 

 insects, and in one species, 

 Leptis vermiico, tlie larva 

 behaves very much like 

 that of the Ant Lion, dig- 

 ging conical holes in the 

 loose sand, remaining at the 

 bottom of them, and then 

 pouncing on the insects that 

 fall into them. Yet, vora- 

 cious as the creature is, it has been known to survive a total 

 fast of six months. 



;. 5oj. — Antlirax seniculus. 

 (Chocolate and yellow.) 



