1})6 CHARLES ROBERTSON. 



Tipliia olypeata n. sp. 



'^. — Face shining, coarsely and rather sparsely punctured ; clypeus hroad, sub- 

 (juad rate, slightly narrowed towards apex, which is subtruncate ; wings a little 

 yellowish ; abdomen shining, quite sparsely punctured, except towards apex. 

 Length 7-10 mm. 



Carlinville, Illinois ; 7 S specimens. I do not know the female, 

 or cannot separate it from female of T. vulgaris. 



Tipliia illiiioensis n. sp. 



% . — Face shining, rather sparsely punctured above; clypeus strongly narrowed 

 anteriorly; wings whitish, nervures rather pale, third transverse cubital nervure 

 rather perpendicular to costal margin, not, or hardly, surpassing apex of margi- 

 nal cell; truncation of metathorax rather rugose; abdomen rather coarsely and 

 closely punctured, apical margin of first segment rather strongly constricted. 

 Length 7-9 mm. 



9- — Wings whitish, apical half of pigidium not puncto-striate. Length 8-11 

 mm. 



Carlinville, Illinois; 32 ^; 10 $ specimens. 



Tipliia punctata n. sp. 



% .—Closely resembles male of T. illimensis, but the nervures darker, segments 

 .3-5 of abdomen finely and closely punctured at base, coarsely and sparsely punc- 

 tured beyond. Length 11 mm 



Carlinville, Illinois; 1 $ specimen. 



The following table of Odyaerus contains all of the species of 

 Stenaiieistrocerus and Stenodyiierus which I have taken in Illinois 



and Florida. 



ODYNERIJS Latr. 



MALES. 



Belongs to Odynerm, to the group of 0. foraminatiis apopkensis n. sp. 



Belongs to f^tenodynerus. segment 1 of abdomen without any suture or transverse 



fluting on edge of truncation 7. 



Belongs to Stenancistrocerus, segment 1 of abdomen with a suture and transverse 



fluting on edge of truncation 1. 



1. Posterior ocelli without two tubercles or crests between and near them 6. 



Posterior ocelli with two tubercles between them 2. 



2. Tubercles elongated, passing before the ocelli fulvipes Sauss. 



Tubercles not so elongated 3. 



3. Tubercles prominent, border of segment 2 reflexed perpendicular to line of 



profile bicoriiis n. sp. 



Tubercles less prominent, border of segment 2 not .so reflexed 4. 



4. Clypeus strongly punctate, flagellum fulvous beneath biTurciis n. sp. 



Clypeus feebly punctured, flagellum black 5. 



."). Ornaments mostly red, segment 1 usually red Iiistrio Lep. 



Ornaments yellow, segment 1 black liistrioiiallN n. sp. 



6. Clypeus bidentate, border of segment 2 reflexed sjeoulariw Sauss. 



Clypeus broadly truncate, border of segment 2 not reflexed oiy peatiis n. sp. 



