ODYNERUS. 329 



first two segments of the abdomen, post-scutel, a spot under the 

 wing, kuees, tibiae, and tarsi, bright yellow (or rather orange). 

 Wings a little smoky ; tegulae and their appendix yellow. 



Var. Wing scale rufous. — Apex of clypeus ferruginous. 



% . A little smaller. Head as wide as high. Clypeus poly- 

 gonal, longer than wide, bidentate, yellow ; mandibles almost 

 yellow. Antenna; ferruginous beneath ; hook black. Interme- 

 diate coxae yellow before ; posterior coxae margined with yellow 

 on the inner border. 



Bess. a. diff. — Differs from 0. pedestris by its wide yellow 

 bands and by the absence of free yellow spots on the 2d segments ; 

 by its more rugose metathorax and 1st abd. segment. 



Compare also 0. texensis and Kennicottianus. 



Hab. North America. Tennessee 9, New York £. 



129. O. Texensis Sauss. — Sat minutus, gracilis, niger, grosse punc- 

 tatus ; metanoto subangulato, rngosissimo, puncto frontali et oculari, 

 pronoti margine, post-scutello, macula subalari et prgescutellari,tegulis, 

 abdominis segmentorum 1, 2, 4, 5 limbo, tibiis taisisque, flavis ; abdo- 

 minis primo segmento basin versus rugoso ; secundo sat brevi. £ . 



Odyn. Texensis Sacss. Rev. de Zool. XXII, 1870, 104, 25, % . 



Total length, 9 mm. ; wing, 6.5 mm. 



% . Quite approximate to 0. Pennsylvanicus. Same size, but 

 not quite so slender ; the thorax a little shorter, but little 

 attenuated posteriorly, more coarsely punctured. The form 

 almost exactly as in 0. perennis, but the lateral edges making 

 nearly two blunt angles; the excavation rugose. Abdomen as 

 in perennis, but more densely and not so coarsely punctured ; the 

 2d segment shorter, not so constricted at base ; its base flat 

 above, not subtuberculate; its margin coarsely punctured, slightly 

 margined, not canaliculate. 



Black. A frontal spot, a spot in the sinus of the eyes, a post- 

 ocular line, a bilobed fascia on the margin of prothorax, tegulae, 

 a spot under the wing, post-scutel, a spot on the disk of meso- 

 tborax, yellow. Abdominal segments all margined with yellow 

 except the 3d. Knees, tibiae, and tarsi yellow. Wings a little 

 smoky. 



% . Antennas fuscous beneath ; the scape with a yellow line. 

 Clypeus yellow; its teeth spiniform; mandibles, inner margin of 

 the orbit, and of the posterior coxae, yellow or luteous. 



