TEXAN HYMENOPTERA. 243 



Odynerus austrinus, n. sp. 



% J . — Differs from fundatus only as follows : — Clypeus of 9 with a broad 

 arcuate yellowish line above; first abdominal segment longer, more sparsely 

 punctured at base and with a narrow, transverse, central yellow band slightly 

 interrupted on the disk; spot on posterior middle of mesothorax always pres- 

 ent. Length .30 — .35 inch. 



Four specimens. (Belfrage.) Also closely allied to vagus, from 

 which it differs by the ferruginous legs and much less reflexed apical 

 margin of second abdominal segment. 



Odynerus vagus. 



Odynerus vagus, Sauss. Rev. Mag. Zool. 1857, p. 277. 

 One 9 specimen. (Belfrage.) 



Odynerus Taos. 



Odynerus Toas, Cress. Trans. Am. Ent. Soc. i., p. 381. 

 Two % 9 specimens. (Belfrage.) 



Odynerus bellulus, n. sp. 



9-— Black, densely and strongly punctured; head large, subquadrate ; 

 subcordate spot above base of antennae, upper margin of clypeus, and spot be- 

 hind summit of eyes, yellowish-white; emargination of eyes filled in with 

 silvery pubescence; clypeus broad, sometimes tinged with ferruginous, apex 

 subemarginate ; scape of antennae sometimes ferruginous; anterior margin of 

 prothorax, interrupted medially, posterior margin of scutellum or a spot on 

 each side and a spot beneath tegulae, yellowish-white; postscutellum, metatho- 

 rax, legs and basal segment of abdomen ferruginous; metatborax deeply exca- 

 vated posteriorly, the sides clothed with a silvery pile; tegulae yellow, pupilled 

 with ferruginous; tarsi dusky; wings subhyaline, costa and marginal cell 

 dusky; abdomen shaped as in rufinodus, densely and strongly punctured, api- 

 cal margins of first and second segments narrowly whitish and strongly re- 

 flexed, second segment with a rounded whitish spot on each side near base; 

 apical segments finely and sparsely punctured; venter ferruginous at base, 

 second segment margined at apex with whitish. Length .28 inch. 



Two specimens. (Belfrage.) Closely allied to rufinodus, Cress., 

 from Colorado, but easily distinguished by the white markings of face 

 and spot on each side of second abdominal segment. 



Odynerus eleetus, n. sp. 



% . — Black, opaque, densely punctured, clothed with a pale sericeous pile, 

 dense in emargination of eyes; clypeus entirely pale yellow, apex deeply 

 notched; antennae long, thickened towards apex, scape yellowish beneath, 

 apex of flagellum tinged with ferruginous, the apical joint minute, curved; an- 

 terior margin of prothorax, slightly interrupted medially, posterior margin of 

 scutellum also slightly interrujuted medially, and spot beneath tegulae, yellow- 

 ish-white; postscutellum prominent; metathorax excavated posteriorly, sides 

 rather densely pubescent, apex with a prominent whitish scale on each side ; 

 tegulae pale yellowish, pupilled with fuscous; wings hyaline, very faiutly 

 dusky along costa and in marginal cell; legs black, knees beneath and tibiae 



