ANALYTICAL TABLE. XXIX 



c. Abdomen not as sessile; its first segment 

 distinctly narrower than the second, which 

 is in the shape of a hawk's bell, with a 

 reflexed margin. Metathorax not excavated 

 in the form of a wide cavity, but of a wide 



channel 188 



Division Stenancistrocerus ...... 189 



Table to assist in the determination of the species of 



Division Stenancistrocerus .... 191 



1. Form lengthened. Metathorax prolonged norizon- 



tally behind the post-scutel, then truncate ver- 

 tically, etc 192 



2. Form very slender. Metathorax not so distinctly 



produced behind the post-scutel ; its con- 

 cavity large, etc. . . . . . .195 



A. First segment of the abdomen rather funnel- 



shaped or bell-shaped, truncate anteriorly . 195 



B. First segment of the abdomen in form of a pro- 



longed bell, rather squarely-rounded, about 

 as wide as the second segment, not con- 

 tracted before 198 



a. First segment sharply truncate anteriorly . 198 



b. First abdominal segment more rounded ante- 



riorly, rather like a square bell . .199 



3. Form slender, but the abdomen sometimes slender, 



sometimes ovoid, especially among the £ . 

 The first segment cupuliform, narrower than 

 the 2d, having the suture indistinct, often 

 presenting a transverse fluting bordered by 

 two traces of sutures. Concavity of the 

 metathorax generally small, its borders in- 

 distinct 206 



a. Suture of the first abdominal segment rather 



strong ; excavation of the metathorax some- 

 what distinctly margined .... 206 



b. Suture of the first abdominal segment not so 



, strong. Excavation of metathorax having 

 its edges rounded, without precise limits . 

 Division Hypancistrocerus . . . . . . 21i> 



Division Ancistroceroides -i I 



n bgenus Odynerus Latr> (sensu striotiore) . . . 212 

 Division Hypodynerus ........ 



Table to assist in distinguishing the speoiea of the Divi- 

 sion llypodynorus . . . . . .216 



