166 ILLINOIS BIOLOGICAL MONOGRAPHS [494 



EXPLANATION OF PLATE 



ANTENNAE, LEGS, SILK-GLANDS 



Fig. 130 — Patnphilius sp. Metathoracic leg. 



Fig. 131 — Megaxyda major. Metathoracic leg. 



Fig. 132 — Macremphytus varianus. Metathoracic leg. 



Fig. 133 — Pteronidea ribesi. Mesothoracic leg. 



Fig. 134 — Neodiprion lecontei. Metathoracic leg. 



Fig. 135 — Dolerus sitnilis. Metathoracic leg. 



Fig. 136 — Phlebatrophia mathesoni. Metathoracic leg. 



Fig. 137 — Metallus rubi. Metathoracic leg. 



Fig. 138 — Pteronidea ribesi. Mesothoracic leg. Dorsal aspect. 



Fig. 139 — Sckizocerus zabriskei. Metathoracic leg. 



Fig. 140 — Kaliofenusa ulmi. Metathoracic leg. 



Fig. 141 — Caliroa cerasi. Metathoracic leg. 



Fig. 142 — Endelomyia aethiops. Metathoracic leg. 



Fig. 143 — Megaxyela major. Antena. 



Fig. 144 — Adirus Irimaculatus. Antenna. 



Fig. 145 — Sckizocerus zabriskei. Antenna. 



Fig. 146 — Cephus pygmaeus. Antenna. 



Fig. 147 — Metallus rubi. Antenna. 



Fig. 148 — Tremex columba. Antenna. 



Fig. 149 — Kaliofenusa ulmi. Antenna. 



Fig. 150 — Phlebatrophia mathesoni. Antenna. 



Fig. 151 — Janus integer. Antenna. 



Fig. 152 — Hartigia cressoni. Antenna. 



Fig. 153 — Thrinaximpressatus. Antenna. 



Fig. 154 — Pteronidea ribesi. Antenna. 



Fig. 155 — Tremex columba. Mesothoracic spiracle. 



Fig. 156 — Abia americana. Silk-glands. 



Fig. 157 — Abia americana. Labium, hypopharynx, and portion of silk-glands, enlarged. 



Fig. 158 — Abia americana. Lateral aspect of cephalic portion of silk-glands. 



Fig. 159 — Abia americana. Dorsal view of silk-press, hypopharynx removed. 



Fig. 160 — Abia americana. Cephalic view of labium and hypopharynx. 



