54 Prof. Westwood on insects infesting the 



Soc. Lond. ii., PL xx., fig. 5. The head is semiovate, sub- 

 convex, having an occii^ital groove down the centre. The 

 eyes are of moderate size, near the posterior angles of 

 the head. I have not detected the oceUi. The mandibles 

 are small, subtrigonate, the apex cm'ved and acute, and 

 the base dilated externally. The other inferior parts of 

 the mouth are represented in my former plate in vol. ii. 



The antennae are rather longer than the head, and 

 consist of a large basal joint, the second being about 

 half the length of the preceding, and affixed in an 

 elbowed position ; the third joint is very minute ; the 

 fourth is much smaller either than the second or fifth, 

 which latter, with the five following nearly equal-sized 

 joints are slightly thickened to the last, and the three 

 terminal joints are more closely soldered together (as in 

 the majority of the Cludcididce), the terminal joint 

 having several minute bristles just below its apex, which 

 is subconical (tigs. 5 and 6). The thorax is oblong- 

 ovate, the prothoracic collar large and somewhat tri- 

 gonate and subdepressed. The wings extend beyond the 

 extremity of the body ; the fore wings with the ordinary 

 deliexed cubitus subclavate, and descending rather 

 obliquely into the disc of the wing (fig. 7). The legs 

 are of moderate length, the anterior (fig. 22) and the 

 posterior (fig. 24) having the femora very much thickened, 

 with the tibifB very short, terminating in strong curved 

 spines, and armed with elongated calcaria, which are 

 bifid at the tip in the anterior legs. The middle pair of 

 legs (fig. 23) in this sex are longer and much more 

 slender than any of the others, with long tibiae and tarsi, 

 the former having a long, slender, acute calcar. The 

 tarsi are twice the length of the tibiae in the fore and 

 hind legs, whilst they are equal in length to them in the 

 middle feet. The abdomen is carinated beneath, not 

 quite so broad as the thorax, and the ovipositor is as 

 long as the thorax and abdomen united. 



In figs. 3 and 4 I have represented two incidents in 

 the lives of these insects of considerable interest. Fig. 3 

 shows the terminal portion of the body of a male, of 

 which the head and thorax have penetrated into one of 

 the fig-seeds in search of the enclosed female ; whilst in 

 fig. 4 I have represented the female in the act of 

 escaping from the seed in which it has been reared (the 

 aperture of which has been artificially widened to show 

 the position of the enclosed female, of which the three 



