AMERICAN HYMENOPTERA. 249 



apical segments black at middle, sides clothed with golden pubescence; under 

 side black, second segment moderately coarsely punctured, with a lateral oblique 

 stripe, and apical margins of all the segments clothed with silvery pubescence ; 

 anterior margins of all finely aciculate. Length 18 mm. 



Hah. — Costa Rica. Two specimens. Collected by the late W. M. 

 Oabb. 



Ifliltilla floridensis.— '^ . — Head transverse, not as wide as thorax, 

 black, coarsely punctured, face clothed with whitish pubescence, longer and 

 denser about the mouth; antennso piceous, scape clothed with glittering hairs. 

 Eyes ovate, acutely emarginate. Thorax robust, ovate, pro- and mesothorax, 

 ferruginous, closely punctured, the latter bearing two discal, longitudinal, 

 faintly impressed lines, apical margin black; scutellum rounded, punctured, 

 metathorax rounded, coarsely reticulate, black at apex. Tegulse black, large, 

 polished. Wings moderate, fuliginous, marginal cell ovate, obliquely truncate 

 at tip, first submarginal long and narrow, second long, pointed at base, receiv- 

 ing the first recurrent a little before the middle, third irregularly hexagonal, 

 its outer angles with abbreviated nervures. Legs black, thinly clothed with 

 glittering hairs, calcaria white. Abdomen ovate, narrowed to apex, ferruginous, 

 finely punctured, apical margins of all the segments fringed with ferruginous 

 pubescence, under side thorax black, coarsely punctured, a ferruginous spot 

 between anterior and middle coxae. Length 13 mm. 



Huh. — Florida. Three specimens. This species is closely allied to 

 Sayi, and may be only a variety; it differs however, in having the 

 basal abdominal segment ferruginous, and disc of metathorax the 

 same color. 



9IutiIIa Tisiphone.— 9-— Nigrocastaneous; head rounded, a little 

 wider than thorax, coarsely punctured, face very broad, the punctures be- 

 coming finer about the insertion of antennae; eyes small, round; antennae 

 slightly pruinose, scape finely punctured; thorax short, narrowed posteriorly, 

 coarsely, confluently punctured; prothorax fringed with short erect hairs; 

 metathorax abruptly truncate, deeply reticulate, bearing a few erect hairs, 

 flanks moderately excavate and smooth; legs finely punctured, the inter- 

 mediate and posterior tibiae armed externally with spines, mixed with fuscous 

 hairs; abdomen elongate-ovate, narrowed to apex, second segment coarsely 

 punctured, its apical margin and remaining segments fringed with golden 

 pubescence; under side as above, except that the marginal fringes are casta- 

 neous. Length 17 mm. 



Hah. — Texas. 



IVIutilla Euterpe. — 9- — Ferruginous; head round, finely and closely 

 punctured, face deeply excavate at insertion of antennae; eyes ovate, finely 

 reticulate; antennae fuscous, flagellum pruinose, scape finely punctured; mandi- 

 bles dark ferruginous before the tips; thorax elongate-quadrate, emarginate at 

 sides; pro- and metathorax rounded, the former scarcely as wide as the latter, 

 closely and deeply punctured; metathorax abruptly truncate, stained with 

 fuscous at apex; flanks of mesothorax smooth; legs black, thinly clothed with 

 pale pubescence, intermediate and posterior tibiae feebly spiued, calcaria white ; 

 abdomen ovate, basal segment black, second minutely punctured, apical margin 

 broadly black, wider at middle on disc, bearing a short longitudinal line of 



TRANS. AMER. ENT. SOC. VII. (32) MAY, 1879. 



