AMERICAN HYMENOPTERA. 249 



subtriangular, receiving the first recurrent at middle, its basal nervure sinuate, 

 third pentagonal, with abbreviated nervures from its exterior angles. Legs 

 black, thinly clothed with black and white hairs, femora minutely punctured, 

 calearia white. Abdomen ferruginous, basal segment campanulate, closely 

 juuictured, punctures finer at apical margin, which is fuscous, and fringed 

 with dark hairs ; second segment closely punctured, thinly clothed with glitter- 

 ing wliitc hairs, apical margins fuscous, thinly fringed with black hairs, third 

 and fourth segments, somewhat darker, finely punctured, apex black. Len^'th 

 3i lines, expanse of wings 5i lines. 



Ilah. — Massachusetts. Coll. of Prof. Agassiz. 



This may prove to be the male of M. simillima, Smith. 



To Mr. Sanborn, from whom I have received some interesting ma- 

 terial in this family, I respectfully dedicate this species. 



80. Mutilla flavida, n. sp. 



Male. — Head and thorax black, the former subquadrate, posterior angles 

 rounded, closely punctured, vertex thinly clothed with pale yellowish hairs, 

 ej-es round, prominent. Thorax closely punctured, prothorax, sides and scu- 

 tellum clothed with pale hairs, metathorax roundly truncate, closely reticu- 

 late. Tegulse ovate, closely punctured. Wings pale fuscous, faintly iride- 

 scent, marginal cell elongate-ovate, rounded at tip; first submarginal long 

 and narrow; second subtriangular, obliquely narrowed towards base, its basal 

 nervure sinuate, receiving tlie first recurrent at middle, third narrowed be- 

 neath, receiving the second recurrent at middle, its apical nervure faintly de- 

 fined. Legs black, thinly clothed with pale hairs, calearia pale. Abdomen 

 elongate ovate,, basal segment campanulate, fuscous, finely punctured, 

 the apical margin fringed with golden pubescence, second segment, except 

 base and apical margins, which are fuscous, bright yellow, finely punctured, 

 the punctures more dense at sides, remaining segments black, margined with 

 fuscous, finely punctured, fringed with orange-yellow pubescence ; underside 

 of abdomen blackish-brown, finely punctured. Length 5 lines, expanse of 

 wings 7i lines. 

 Ilah. — Texas. ' 



81. Mutilla laticeps, n. sp. 



Male. — Black; head quadrate, wider than the thorax, posterior margin con- 

 cave, angles acute, very finely punctured, clothed with scattered white hairs ; 

 anlennte and mandibles black, the latter clothed with fine wliite hairs; eyes 

 round. Thorax elongate quadrate, pro- and mesotliorax finely punctured, 

 metathorax reticulated, rounded. Wings sub-hyaline, iridescent, submarginal 

 cell ovate-lanceolate, first submarginal, bisected by a white line, second, re- 

 ceiving the first recurrent nervure a little before the midiUe; teguloe round, 

 polished. Legs black, clothed with white hairs, calearia white. Abdomen 

 ovate, shining, first segment campanulate, with a small tubercle on each side 

 near the base, second segment witli remote, minute jmnctures, bearing a few 

 scattered silvery hairs; apical segments thinly fringed with the same. Under- 

 side of entire insect clothed with scattered hairs. Length 3 lines, expanse of 

 wings yj lines. 



Hal). — Mexico. Prof. F. Sumichrast. 



82. Mutilla Xalapa, n. sp. 



Male. — Black, head rounded, thinly clothed with erect pale hairs; aiitcnnse 



