218 



WUTILLIDJE. 



tiirod, the metathorax with large sliallow punctures; abdomen 

 sliiiiiiig, the basal segment with strong punctures. The extreme 

 b;iso and apex of the scape, and the miuuliblos in the middle, fer- 

 ruginous ; the head as wide as the thorax, transverse, and with 

 griseous pubescence on the face and cheeks. The metathorax, the 

 tibi;e. and tarsi with silvery-white pubescence; wings subhyalino 

 and iridescent, palest at their base. Abdomen with the basal seg- 

 ment clavate ; the apical margins of the second, third, and fourth 

 segments thinly fringed with long white pubescence, that ou the 

 apical segments black. 



Hah. Ega. 



86. Mutilla irregularis. 



Male. Length 4| lines. — Black, shining ; head and thorax strongly 

 but not closely punctured. Head large, quadrate, rather wider 

 than the thorax, both thinly covered with erect griseous pubes- 

 cence ; wings with two submarginal cells fuscous, palest at their 

 base, the nervures black ; the legs with black pubescence, the tarsi 

 fuscous. Abdomen moderately punctured ; the first, second, and 

 third segments with their apical margins fringed with white pubes- 

 cence ; the apical segments fringed with black. 



Hah. South America. 



Div. lY. Males icith three suhmarginal cells in the anterior ivings. 



(Sp. 87-100.) 



87. Mutilla oblita. 



Male. Length 6-7 lines. — Black ; the head and thorax closely punc- 

 tured, the abdomen more finely so and shining. The head, below 

 the antennae, with silvery pubescence ; on the vertex it is longer, 

 thin, and scattered. The pro- and mesothorax with short black 

 pubescence, that on the metathorax is short, dense, and silvery 

 white ; wings dark fuscous, with their base hyaline, the anterior 

 pair with three submarginal cells ; the legs with white pubescence ; 

 the calcaria white. The basal segment of the abdomen bordered 

 with white pubescence, the margins of the other segments with a 

 thin fringe of the same ; the lateral margins of the second segment 

 towards its apex have also a little white pubescence. 



Var. a. The head greenish, thorax obscure purple, and the abdomen 

 blue. 



Hah. Villa Nova, on the Amazons. 



