ANALYTICAL TABLE. XXXV 



* Sometimes there are two little free spots 



on the 2d abdominal segments . . 334 

 ** No lateral yellow spot on the abdomen . 335 



c. Posterior margin of prothorax, and often 



also the anterior margin bordered with 

 yellow. (Insects often velvety.) . . 340 



d. Prothorax quite yellow above. Scutel and 



post-scutel yellow ..... 34(! 

 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 . . 346 

 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 ..... 352 



A. Metathorax quite unarmed superiorly . . 352 



B. Metathorax armed superiorly with two tuber- 



cles, sometimes very small . . . 355 



Subgenus Epiponus 360 



Division Antepiponus ....... 361 



Division Epiponus . ....... 363 



Appendix to the genus Odynerus . 3'j'4 



Gen. Leptochilus Sanss. . ..... . 366 



Gen. Pterochilus King. . 368 



Gen. Ctenochilus Sanss. ........ 372 



Gen. Alastor Lepel. Si. Farg. . . . . . . .373 



Gen. Smithia S'uiss. ......... 378 



Appendix ........... 379 



Index ............ 3 V 1 



Explanation of Plates . 3S 



