APPENDIX TO THE GENUS ODYNERUS. 365 



1. O. rilfinodlis Ceesson. — Niger, valde punctatus, albido variegatus; 

 inetathorace rufo, utrinque denteni efficiente ; abdominis segmentis 1-3 

 luteo-limbatis ; 1°, 2° margine refiexo ; pedibus rufis ; alis nebulosis. 



0. rufinodus Ceess. Amer. Ent. Trans., I, 1SG7, 381, 22, J. 



Total length, 3.5 lines. 



? . 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 throe obtuse 

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

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

 spot on each side of pleura, tegulse, 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 eampanulate, 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 Odynei^us. 



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

 punctatis ; abdomiue fasciis duabus ilavis ornato. 



0. productus Smi^h, Lond. Ent. Trans., 3d Ser.. I, 1SG2, 37, % . 



Total length, 3.5 lines. 



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

 and a small spot above it, a minute spol in the sinus o\' the eyes ami 

 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 tegulse, 

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

 and intermediate tibue, yellow; the anterior tibia and tarsi fer- 

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

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



