TEXAN HYMENOPTERA. 241 



Odynerus maiii Pest us, n. sp. 



% £.— Black, shining, clothed with a rather dense short pale pubescence 

 longer and more dense on abdomen; head and thorax with coarse, rather 

 sparse punctures ; a triangular spot between antennae, anterior orbits as far up 

 as emargination of eyes, spot behind summit of eyes and the clypeus, yellow 

 or yellow-ferruginous; clypeus narrowly truncate at tip, densely punctured, 

 flattened on disk where it is stained with fuscous or black in J; mandibles 

 ferruginous; antenna? black, scape ferruginous, yellow beneath, apical joint in 

 % long, narrow, curved, dull ferruginous; prothorax tinged anteriorly with 

 ferruginous, with a broad yellow band in front; a rounded spot on each side of 

 scutellum, the postscutellum, a spot on each side of metathorax above and a 

 rounded spot beneath tegulae, yellow; metathorax deeply concave behind, the 

 posterior face obliquely wrinkled ; teguise yellow, pupilled with ferruginous; 

 wings fusco-hyaline, subviolaceous, fuliginous along costa and in marginal 

 cell ; legs ferruginous, base black, tips of femora beneath and the tibiae more or 

 less yellow; abdomen almost polished, rather densely pubescence; first seg- 

 ment sparsely punctured, base roundly truncate, apical margin with a yellow 

 band confluent laterally with a large yellow mark which is pointed towards 

 disk ; second segment strongly, rather closely punctured, more coarsely and 

 densely so towards apex, which is depressed and broadly evenly margined with 

 yellow; third and fourth segments narrowly margined at apex with yellow; 

 apical segment black; apical margin of the segments flat, not at all reflexed; 

 venter black, with a yellow spot on each apical corner of second segment. 

 Length .50 — .55 inch. 



Four specimens. (Belfrage.) This fine species is more pilose than 

 any other of the genus known to me from Texas. 



Odynerus foramina! 11*. 



Odynerus foraminatus, Sauss. Mon. des Guepes Sol. p. 180. 

 Five % $ specimens. (Belfrage; Boll.) 



Odynerus campestris. 



Odynerus campestris, Sauss. Mon. des Guepes Sol. p. 137. 

 Two $ $ specimens. (Belfrage.) 



Odynerus uncinatus. 



Odynerus uncinata, Say, Bost. Journ. Nat. Hist, i., p. 386. 



One $ specimen. (Belfrage.) 



Odynerus colon, n. sp. 



9- — Black, densely and coarsely punctured; spot between base of an- 

 tennae, dot in emargination of eyes, upper margin of clypeus, spot on base of 

 mandibles, short line or spot behind eyes, scape beneath, two sublunate spots 

 on anterior margin of prothorax, dot behind tegulae, postscutellum, sometimes 

 an obsolete spot on each side of metathorax, a rounded spot beneath tegulae, 

 apical margins of abdominal segments 1 — 5, broader on first and second, a 

 large oblique spot on each side of first and a small round spot on each side of 

 second about midway between base and apex, all lemon-yellow; tegulae ful- 

 vous, pupilled with fuscous; wings fusco-hyaline, darker along costa and in 

 marginal cell; legs black, tips of femora, tibiae and tarsi fulvo-ferruginous : 



TKANS. AMER. ENT. S0C. IV. (31) NOVEMBER, 1S72. 



