APPENDIX TO THE GENUS ODYNERUS. 3G5 



1. Oo rilfiliodlis Cresson - . — Niger, valde punctatns, albido variegatus; 

 inetathorace rufo, utrinque dentern efficiente ; abdominis segnientis 1-3 

 luteo-limbatis ; 1°, 20 inargine reflexo ; pedibus rufis ; alis nebulosis. 



0. rufinodus Cress. Ames-. Eut. Trans., I, 1867, 381, 22, J • 



Total length, 3.5 lines. 



9. Black, densely and deeply punctured; head large, face and 

 base of clypeus with glittering pubescence, the latter subconvex ; 

 mandibles rufous, black at tips, the inner edge with three obtuse 

 teeth; palpi honey-yellow; antennas short, clavate, entirely black- 

 ish ; a transverse line, interrupted medially on prothorax, a round 

 spot on each side of pleura, tegular, except a brown medial spot, 

 and two spots on scutellum, white ; metathorax rufous, silvery on 

 the sides, deeply excavated posteriorly, the extreme lateral apical 

 angles produced into a subacute spine; wings subhyaline, the 

 costa narrowly fuliginous ; legs entirely rufous, the posterior 

 tarsi slightly dusky; abdomen with the apical margins of the 

 first and second segments reflexed and narrowly whitish, as well 

 as that of the third; basal segment campanulate, convex, without 

 any transverse carina and suture at base, rufous; second segment 

 suddenly swollen, convex, its posterior whitish, margin sinuous 

 anteriorly, and continued, narrowly, beneath; fourth and following 

 segments entirely black. 



Hab. New Mexico. 1 ?. 



This species is most likely very variable in its colors. It may 

 prove to belong to Division Odijncrus. 



2* O. prodlictlis. — Niger; capite thoraceque flavo-guttatis et valde 

 puiictatis ; abdomiue fasciis duabus llavis ornato. 



0. productus Smith, Lond. Ent. Trans., 3d Ser.. I, 18G2, 37, % . 



Total length, 3.5 lines. 



% . Black, the head and thorax strongly punctured ; the clypeus 

 and a small spot above it, a minute spot in the sinus of the eyes and 

 another behind them, the scape in front and a spot on the mandibles, 

 pale yellow ; the flagellum fulvous beneath. The posterior mar- 

 gins of the prothorax, a spot beneath the tubercles, the tegulae, 

 post-scutellum, the metathorax behind, and a spot on the anterior 

 and intermediate tibiae, yellow ; the anterior tibiae and tarsi fer- 

 ruginous ; the wings hyaline, with a dark fuscous stain in the 

 marginal cell; a ferruginous spot on the tegulae. Abdomen finely 



