AMERICAN HYMENOPTERA. 233 



segment elongate, closely punctured, thinly clothed with black hairs ; second 

 sesfment pale ferruginous, with scattered hairs of the same color, shining' 

 finely punctured, lateral carina) edged internally with black; the remaining 

 segments clothed with dense, coarse black pubescence. Length 5\ lines, ex- 

 panse of wings 10 lines. 



Ilab. — Texas. 



In some specimens the disc of the petiole is dark rufous. 



19. MutiUa pennsylvanica. St. Farg. Hym. Ill, p. 628, 49. 



Male. — Head and thorax reddish, first and second abdominal sesments red- 

 dish, apical margin of the former black; wings fuliginous, marginal cell elong- 

 ate-ovate, eyes rouiid. Length 6 — 7 lines, expanse of wings 11 lines. 

 IJab. — Middle States. 



20. MutiUa auripilis, n. sp. 



Male. — Dark ferruginous, head quadrate, posterior angles rounded, closely 

 and finely punctured, thinly clothed with scattered black hairs ; scape of an- 

 tennae dark rufous, flagullum rufo-piceous; mandibles ferruginous, tipped with 

 black; eyes prominent, round, polished. Thorax elongate, narrowed behind, 

 closely reticulated, very thinly clothed with dark hairs, posterior margin of 

 prothorax carinate ; mesothorax elevated, having four shallow, longitudinal 

 grooves on the disc; nietatliorax gradually rounded, having a distinct suture 

 in front. Wings moderate, fuliginous, marginal cell lanceolate, first submargiual 

 small, narrow, second large, subquadrate, receiving the first recurrent nervure 

 before the middle, third obsolete, not extending as far as the marginal; a hy- 

 aline streak passing from the costa through the first and second suhniarginal 

 cells, terminating in a patch of tiie same, below the third. Legs black, clothed 

 with pale glittering hairs. Abdomen elongate-ovate, basal segment dark fer- 

 ruginous, with the apical margin black, closely reticulated, clothed with 

 scattered pale hairs ; second segment dusky fulvous, finely punctured, clothed 

 with erect fulvous hairs; apical margin blackish; the remaining segments 

 blackish, very finely reticulated, clothed with golden fulvous pubescence; 

 lateral carinse distinct. Length 6i lines, expanse of wings 12 lines. 

 J/ab. — Texas. 



21. Mutilla Orous, Cresson, Proc. Ent. Soc. Pbila. VoL IV, p. 428. 



Female. — Deep black, with coarse black and fulvous pubescence, head not 

 wider than the thorax, eyes round. Length 9 — 9i lines. 



Jj«/e. — Similar to the female. Wings blackish, marginal cell short. Length 

 10 lines, expanse of wings IGi lines. 



Hub. — Texas. 



22. Mutilla Gorgon, n sp. 



2''ewa/e.— Black, head wider than the thorax, subquadrate, posterior ajigles 

 rounded, thinly clothed with black pubescence, closely j)unctured, cheeks i)ro- 

 mineut; eyes round, polished, scape of antennae punctured; clothed with coarse 

 black pubescence, mandibles, with a tooth before the tip. Thorax short, 

 ovate, closely covered with confluent jiunctures, clothed with black pubes- 

 cence, metalhorax abruptly truncate. Legs black, clothed with black hairs, 

 finely punctured, the intermediate and posterior tibiaj armed with spines. 

 Abdomen ovate, basal segment closely punctured, dorsal surface, except 

 anterior margin of second segment, clothed with dense, coarse, dark fer^ugin- 



