58 Prof. Westwood on insects infcstinr/ the 



towards its base ; the tibia very short, armed at its 

 extremity with a large tridentate calcar, and the tarsus 

 resembhng that of the fore leg. 



The abdomen is compressed, with the ovipositor extend- 

 ing about one-third of its length beyond the extremity. 

 Its composition is shown in fig. 53, where the parts 

 have been separated by pressure. The basal portions 

 of its component parts are thus seen to be semicircularly 

 curved and dilated ; this is especially the case with the 

 two slender lateral sheaths, which are a little dilated 

 and twisted in the middle, the tips being obtuse and 

 finely setose ; whilst the central spicula is acute at the 

 tip, with its middle portion resting within the bifid 

 terminal ventral segment of the abdomen. 



My figures 25 to 31 illustrate certain interesting points 

 in the economy of this remarkable insect. Fig. 25 

 represents the fig of Ficiis Carica from Corfu and Mpnt- 

 pellier. Fig. 26 represents the minute, white, fleshy, larva 

 taken from within one of the seeds of this fig. Fig. 27 

 represents the female pupa taken from the interior of a 

 fig-seed, and fig. 28 the pupa of a male. Fig. 29 rein'e- 

 sents the female pupa rolled up within the seed ; fig. 30 

 a female escaping from one of the seeds in which she 

 had been reared ; and tig. 31 represents a male exserting 

 his generative organ into a fig-seed which contained the 

 female insect. 



Explanation of Plates. 



PLATE II. 

 Fig. 1. Sycophaga crasslyes male, magnified. 



2. ,, ,, female, magnified. 



3. Male penetrating a pericarp of the fig. 



4. Female escaping from a pericarp of fig. 



5. Antenna of female. 



6. Second and following joints of ditto. 



7. Part of fore margin of fore wing of female. 



8. Extremity of body of male seen transparently, showing 



the great trachefe. 



9. Extremity of anal filaments of male. 



10. Front of head of male from above, with mandibles 



removed. 



11. Front of head of male from below, witli mandibles 



removed. 



