ICHNEUMON-FLIES, PART 2 : ILLUSTRATIONS 



613 



a 



c 



d 



I 



& 



Figure 317. — Head and torso, species of Rhyssa, ? : 



a, howdenoruin d, alaskensis f, lineolata 



b, hoferi e, crevieri g, persuasoria 



c, ponderosae 



