/. hexagomis 



181 



Nymph (Fig. 176): bears a close resemblance to the ?, but the 

 inner spur on coxa I is less marked, and the hypostome bears 2 | 2 files 

 of 7-8 teeth. 



Larva (Fig. 177): resembles the o, but the coxae are unarmed, 

 coxae I and II show a slight tuberosity at the postero-internal angle ; 

 tarsus 4 is less humped. Hypostome 2 j 2, with fewer teeth per file. 



Fig. 176. I. hexagonm o : capitulum and scutum, coxae and capitulum (ventral aspect), 

 tarsus 4, spiracle and anal groove. Specimen found with the ? figured above. 

 (Original, G. H. F. N. del.) 



TFSv 



Fig. 177. I. hexagomis larva : dorsum, venter, tarsus 3 ; hypostome highly magnified. 

 Drawn from specimen (N. 82) raised in the laboratory, Cambridge, from ? taken in 

 Northumberland, 1904. (Original, G. H. F. N. del.) 



