182 



THE CANADIAN ENTOMOLOGIST 



Can. Ent., Vol. LII. 



Plate VI. 



TERMINAL ABDOMINAL STRUCTLRES OF MALE INSECTS. 



(P. 183) 



ward under the stnirturcs labeled "a," "h," "c," and "d" in Fig. 5, thus Iiringing 

 ihem into the position of the structures labeled "a," "b," "e," and "d" in Vi^. 8. 

 If the plate bearing the labels "a" and "a" in I'ig. 2 of a sawfly, represents the 

 plate labeled "a" and "a" in F'ig. 4 of an ephcnierid, it is quite evident that the 

 styligers or "coxites" whose fusion product is represented by the plate bearing 

 the labels "a" and "a" in Fig. 2, are distinctly separated from the ninth sternite 

 "9*" which originalh' l)ore them (?) thus presenting a condition comparable to 



