ANALYTICAL TABLE. 



XXXV 





* Sometimes there are two little free spots 



on the 2d abdominal segments . 

 ** No lateral yellow spot on the abdomen . 



c. Posterior margin of prothorax, and often 



also the anterior margin bordered with 

 yellow. (Insects often velvety.) . 



d. Prothorax quite yellow above. Scutel and 



post-scutel yellow . 

 3. Body elongate, slender ; the abdomen especial- 

 ly, very slender. Metathorax convex, having 

 no longer a distinct excavation, but sooner 

 parted by a large groove, which separates 

 its two cheeks. Abdomen slender, spindle- 

 shaped; the first segment elongate, funnel- 

 shaped, sometimes subpedunculate 

 III. Metathorax not produced superiorly beyond the 

 post-scutel, convex; its hinder face parted 

 by a deep groove. Post-scutel truncate — 

 having a sharp edge ..... 



A. Metathorax quite unarmed superiorly . 



B. Metathorax armed superiorly with two tuber- 



cles, sometimes very small 

 Subgenus Epiponua 



Division Antepiponus 

 Division Epiponus . 

 Appendix to the genus Odynerus 

 (ien. Leptochilus Sanss. 

 Gen. Fterochilns King. 

 Gen. Ctenochilus Suits*. 

 Gen. Alastor Lepei. St. Farg. 

 Gen. Smitliia Smiss. . 



334 

 335 



340 

 346 



34(5 



352 



352 



3R5 



360 

 361 



363 

 364 

 366 



368 

 372 

 373 



37S 



Appendix 



Index 



Explanation of Plates 



379 

 3«1 



386 



