PLATE XXIX. 



Fig. 90. — Pygidium of Tachytes mandibularis o . 

 Fig. 91. — Pygidium of Tachytes obductus o . 

 Fig. 92. — Pygidium of Tachytes distinctus o . 

 Fig. 93. — Pyigdium of Tachytes mergus o . 

 Fig. 94. — Pygidium of Tachytes distinctus o . 

 Fig. 95. — Pygidium of Bothynostetkus distinctus j> . 

 Fig. 96. — Pygidium of Lyroda subita o . 

 Fig. 97. — Pygidium of Notogonia argentata q . 



Fig. 98. — Pygidium of Niteliopsis foxii q (type) . The area has no 

 bounding earing. 



Fig. 99. — Pygidium of Larropsis divisa o . 



Fig. 100. — Eighth ventral plate of Larropsis ater ^ . 



Fig. 101. — Eighth ventral plate of Larropsis bruneii j> . 



Fig. 102. — Pygidium of Plenoculus apicalis q . 



Fig. 103. — Dorsal view of end of abdomen of Plenoculus apicalis j> , 

 showing eighth ventral segment. 



Fig. 104. — Pygidium of Tachysphex propinguus q . 



Fig. 105. — Pygidium of Tachysphex crenuloides q (cotype) . 



Fig. 106. — Pygidium of Tachysphex dentatus q (type) . 



Fig. 107. — Pygidium of Larra arialis o . 



Fig. 108. — Apical portion of eighth ventral plate of Tachytes mandibu- 

 laris J . 



Fig. 109. — Apical portion of eighth ventral plate of Tachytes pep- 

 ticus J . 



Fig. 110. — Apical portion of eighth venti'al plate of Tachytes fulvi- 

 ventris ^ . 



Fig. 111. — Apical portion of eighth ventral plate of Tachytes dis- 

 tinctus 7 . 



