810 



Mil. J. G. 11. FllEW ON THE LAIU'AL 



Meromyza NIGRIVENTRIS Mcq. 

 The full-grown laiva (text-fig. 14) is about the same length as 

 that of Ghlorops, but is rather more slender. It is almost always 

 a bright green colour, but occasionally almost colourless speci- 

 mens are found. Other prominent characteristics are the sessile 



Text-figure 14. 



c.p.s. 



M. nigriventrls. Lateral view of mature larva. 



posterior stigmata, the presence in the cephalo-pharyngeal skele- 

 ton of a median ventral piece, and the peculiar shape of the last 

 abdominal segment Avhen seen laterally. 



The Head (text-fig. 15) difl'crs in several points from that of 

 Chlorojis. The antenrise are anterior instead of lateral. The 



Text-fio-ure 15. 



M. nigriventris. Ventral view of larval head. 



maxillary palps are situated on two prominent swellings separated 

 by a rather deep median fissure : the chitinous ring surrounding 

 the maxillary palp sense organs is incomplete antero-laterally. 

 The pre-or.al sense organs are situated on the postero-ventral 

 regions of the swellings bearing the maxillary palps ; each is a 



