PLATE 15. 



porithcciiiiii. 



owiri}? IVoiii a 



theoia. 



lin of izrass. 



M-ithccia. 



ly Hliowiii<r tlic 



insects on a 

 ijrcd. 



)\vin<r the jtcri- 



rirod. 



nito scale. 



,v I'.A.-oll CluKi 



