AMERICAN HYMENOPTERA. 2-47 



ThU species varies jxreatly both in size and ornamentation of 

 second abdominal segment. In some individuals the black spot on 

 basal middle is large And very distinct, while in others it is obsolete ; 

 in some there is an oblique black line on each side towards base, leav- 

 ing a ferruginous spot in each basal corner ; the apical margin is more 

 or less broadly black, sometimes with a continuous fringe of pale pu- 

 bescence, occasionally interrupted medially, but generally the pale 

 fringe is only lateral, while in other specimens there is in addition a 

 small central patch. The third and remaining segments have gener- 

 ally an apical fringe, but in two specimens only this fringe is lateral on 

 third segment; the apical fringe of first segment is sometimes black 

 and sometimes pale. The ?cape of anteunae and legs vary from 

 deep black to entirely ferruginous, the latter more or less densely 

 clothed with long pale pubescence; in one specimen from Washington 

 Territory the pubescence of legs is entirely black 



7^. Mutilla mutata, n. sp. 



Female. — Ferruginous ; head rounded, transverse, finely and densely punc- 

 tured, mandibles blackish at tip; antennse nigro-fuscous; eyes small, round, 

 convex. Thorax robust, ovate, slightly narrowed posteriorly, coarsely punc- 

 tured, armed at the sides with two obtuse tubercles, metathorax roundly trun- 

 cate. Legs black, tliinly clothed with pale glittering hairs. Abdomen ovate, 

 second segment with four pale ferruginous spots, two at base, small, those at 

 apical margin larger; the remaining segments fusco-ferruginous, the apical 

 margins fringed with pale yellowish or white pubescence. Length 4 — 6 

 lines. 



Ilah. — Atlantic and Southern States. 



Upon the examination of a large series of specimens, this may prove 

 to be only a variety of ferrurjata. It is distinguished by the more or 

 less distinct pale spots on the second abdominal segment, thorax is 

 rather shorter and broader, and the color of the apical fringe of the 

 segments varies precisely as in fcrrugata. 



75. Mutilla scsevola, n. sp. 



Female. — Ferruginous; bead subquadrate, posterior angles rounded, slightly 

 wider than the thorax, finely punctured, thinly clothed with appressed red- 

 dish-golden pubescence; antennae fuscous, mamlibles blackish at tips ; eyes 

 round, prominent. Thorax ovate, much narrowed posteriorly, closely punc- 

 tured ; sides of metathorux smooth. Legs blackish, thinly clothed with pale 

 glittering hairs, calcaria whitish. Abdomen ovate, the second segment having 

 on the disc near apical margin two large subquadrate patches of pale ferrugin- 

 ous, and occasionally two small spots of the same color at basal margin ; apical 

 margins of all the segments fuscous, third, fourth and fifth fringed with pale 

 silky pubescence. Length 3 — 44 lines. 

 JLib. — Atlantic States. 

 This is very near to Mutata from which it differs by its much 



