BY R. J. TILLYARD. 



389 



form. The markings of the thorax show great similarity with 

 those of the "orange" female of A. pruinescens described above, 

 but the groundcolour is dull red and the insect is very much 

 smaller. There may be also an ordinary form of female, yet to 

 be found or, it may be, obsolete. I have only half-a-dozen females 

 of this insect altogether. 



The following table exhibits the classification proposed for the 

 known forms of the two genera. 



Genus Ischnuka. 



Genus Agriocnemis. 



In conclusion I would remark that the two genera in which 

 dimorphism is shown to occur, though differing widely in their 

 wing-structure, have many points of similarity, notably the small 

 size and weak flight of almost all the species, the general facies 



