164 



ILLINOIS BIOWGICAL MONOGRAPHS 



[482 



EXPLANATION OF PLATE 

 CAUDAL ASPECT OF HEAD, ABDOMEN, ABDOMINAL APPENDAGES 



Fig. 105 — Kaliojenusa ulmi. Ventral 

 aspect of caudal abdominal segment. 



Fig. 106 — Phlebatrophia mathesoni. 



Fig. 107 — Xiphydria sp. 



Fig. 108 — Cephus pygmaeus. 



Fig. 109 — Adirus trimactilakis. 



Fig. 110 — Xiphydria sp. 



Fig. 1 1 1 — Hartigia cressoni. 



Fig. 112 — Janus integer. 



Fig. 113 — Tremex columba. 



Fig. 114 — Cephus pygmaeus. Caudal end 

 of the abdomen enlarged. 



Fig. 115 — Adirus trimaculatus. 



Fig. 116 — Adirus trimaculatus. Subanal ap- 

 pendage enlarged. 



Fig. 117 — Hartigia cressoni. Subanal 

 appendage enlarged. 



Fig. 118 — Janus sp. Subanal appendage 

 enlarged. 



Fig. 119 — Cephus Pygmaeus. Subanal 

 appendage enlarged. 



Fig. 120 — Tremex columba. Lateral aspect of 



suranal process enlarged. 

 Fig. 121 — Janus integer. Lateral aspect of 



suranal process enlarged. 

 Fig. 122 — Tremex columba. Dorsal aspect of 



suranal process enlarged. 

 Fig. 123 — Janus integer. Dorsal aspect of 



suranal process enlarged. 

 Fig. 124 — Pteronidea ribesi. Ventral aspect 



of third abdominal segment. 

 Fig. 125 — Pteronidea ribesi Lateral aspect 



of caudal end of abdomen. 

 Fig. 126 — Pteronidea ribesi. Lateral aspect 



of caudal end of abdomen. 

 Fig. 127 — Pteronidea ribesi. Dorsal aspect of 



caudal end of abdomen. 

 Fig. 128 — Abia americana. Caudal aspect of 



the head. 

 Fig. 129 — Neodiprion lecontei. Musculature 



of third abdominal segment, semidia- 



grammatic. Annulets numbered. 



