52 Prof. Westwood on insects infesting the 



tlio liead has a dellexod point, whilst its front margin on 

 the lower side has a deep impression on each side, within 

 whieh the mnndihles are ailixed (Plate II., figs. 10, 11 ; 

 and Plate III., lig. 12). In the second of these figures 

 the huccal opening is seen, looking obliquely into the 

 mouth ; near the base of each of the antenna^ is a black 

 patch, which cannot be regarded as the rudimental eyes ; 

 and there are five dark-coloured longitudinal narrow 

 streaks running along the whole length of the head. 



The eyes are entirely wanting in the males, nor have 

 I been able to detect any rudiment of the maxillae and 

 labium or palpi. 



The mandibles, on the contrary, are very powerful, 

 horny, trigonate, with the apex acute and curved, and 

 the inner margin armed with two sharp conical teeth. 

 The anteniiiK are very short, not one-third of the length 

 of the head, composed apparently of only three joints, 

 the basal one very large, broadly ovate and depressed, 

 the second very small and obconic, and the third ovate- 

 conic, apparently formed of three anch^dosed joints, the 

 first indicated by two rather strong but minute bristles, and 

 the third ai)parently being a sort of verj- minute terminal 

 nipple (see ligs. 10, 12, and 14). The base of the head 

 has a small transverse horn}^ subovate kind of socket, by 

 which it is attached in the cavity of the anterior margin 

 of the prothorax. 



The prothorax is nearly equal in size to the head, 

 with the anterior angles rounded off; on the under side 

 it is shortened for the insertion of the basal joint of the 

 fore legs ; the meso- and metathorax together are rather 

 larger than the prothorax. The mesothorax is some- 

 what shield-shaped, truncated at its extremity on the 

 upper side between the coxas of the middle legs ; it has a 

 depression across its centre, an impressed line rumiing 

 from its base to join this impression. The metathorax 

 is shorter, more transverse, with the sides rounded, the 

 posterior angles removed in order to allow the insertion 

 of the posterior coxje. These segments exhibit no traces 

 of elytra or wings. The legs are all short and very 

 robust ; as their structure affords specific distinctions 

 with reference to other species of fig-insects (of which I 

 possess a considerable number from different species of 

 Indian and Ceylonese figs) I have been very careful in 

 giving correct representations of them ; the various 

 figures in the plates illustrating this paper having been 



