AMERICAN HYMENOPTERA. 381 



22. Odynerus rufinodus, n. sp. 



Female. — Black, densely and deeply punctured ; head large, face 

 and base of clypeus with glittering pubescence, the latter subconvex j 

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

 palpi honey-yellow ; antennre short, clavate, entirely blackish ; a trans- 

 verse 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 ex- 

 cavated 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 companulate, con- 

 vex, without any transverse carina and suture at base, rufous; second 

 segment suddenly swollen, convex, its posterior whitish margin sinuous 

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

 segments entirely black. Length 3^ lines. 



One 9 specimen. 



23. Odynerus oculatus, Say. 



Odynerus oculatus, Say, Bost. Jour. Nat. Hist, i, p. 385. Sauss., Mon. Guepes 

 Sol. Supp. p. 219. 

 One $ specimen. The first segment has an oblique spot on each 

 side. 



24. Odynerus Toas, n. sp. 



Female. — Black, densely and deeply punctured ; a lunate line at 

 base of clypeus, spot at base of mandibles, another above insertion of 

 antennas, another in the emargination of eyes, and a short line on pos- 

 terior orbits, pale yellowish-white; clypeus with longitudinal punctures, 

 narrowed at tip which is subemarginate; apical half of mandibles ferru- 

 ginous; palpi pale; antennae with the scape whitish on the outside; 

 two transverse spots on prothorax, tegulae, except a dusky medial dot, 

 a large spot beneath and a small spot behind tegulae, postscutellum, 

 and a transverse mark on each side of metathorax, pale yellowish-white; 

 metathorax rugulose, truncate and subexcavate behind ; wings hyaline 

 or subhyaline, dusky along the costa, stigma and costal nerve reddish- 

 brown ; legs ferruginous, coxae and part of trochanters black, tips of 

 femora, base of tibiae yellowish ; apical margin q£ all the abdominal seg- 

 ments, except the last, yellowish, (that on the basal segment confluent with 

 a lateral subtriangular spot; that on the second sinuous anteriorly,) and 

 a sub-basal, transverse spot on each side of second segment, pale yel- 



