198 CHARLES A. BLAKE. 



Mtitilla trisignata Blake. 



Female. — Black, head round, clothed with dense, pale, golden pubescence, in- 

 terspersed with scattered, erect, black hairs ; eyes ovate. Thorax ovate, suddenly 

 narrowed posteriorly, coarsely punctured, the disc densely clothed with pale 

 golden pubescence, the front and sides bearing long black hairs, metathorax 

 truncate. Legs black, thinly clothed with pale hairs, intermediate and posterior 

 tibia armed with spines. Abdomen ovate, petiolate, basal segment finely punc- 

 tured, the disc thinly clothed with pale golden pubescence, second and following 

 segments clothed with dense black pubescence, the former bearing three round 

 spots of pale golden pubescence, the one at base small, the others larger and 

 placed laterally near the apical margin ; apex with a small spot of pale pubes- 

 cence; under side of second segment coarsely punctured, ventral segments 

 fringed with pale glittering hairs. Length 9 mm. 



Hab. — Florida. LiNke Harris collection. 



Mutilla Promethea Blake. 



Male. — Rufo-ferruginous, head round, closely punctured, face below the line 

 of the eyes black, clothed with obscure yellowish hairs, eyes large, ovate, emar- 

 ginate, mandibles black, with a rufous dash before the tips, which are bidentate. 

 Thorax elongate subquadrate, rounded in front, thinly clothed with obscure 

 rufous pubescence, closely punctured, the mesothorax with two deeply impressed 

 longitudinal lines, metathorax rounded, coarsely reticulate ; tegulse finely punc- 

 tured, fuscous ; wings ample, fuliginous, marginal cell elongate ovate, truncate 

 at tip, second submarginal subquadrate, pointed towards base, receiving the first 

 recurrent nervure at middle, third hexagonal, receiving the second recurrent 

 beyond the middle. Legs black, thinly clothed with pale hairs. Abdomen ovate, 

 basal segment campanulate, black, finely punctured, second and following seg- 

 ments rufo-ferruginous, finely punctured, the apical margins fuscous, fringed 

 with blackish pubescence ; under side same as above. Length 14 mm. ; expanse 

 of wings 25.5 mm. 



Hab. — Louisiana. 



JVIutilla contracta Say. 



Male. — Body entirely black beneath, inclusive of the feet ; above, ferruginous 

 yellowish. Head black below the line of the eyes ; metathorax, petiole, anterior 

 and lateral declivities of the abdomen black ; anterior half of the first segment 

 of the tergum black ; wings blackish fuliginous, somewhat paler in the middle ; 

 second cubital cellule wide beneath and contracted, but not angulated at the 

 radial cellule ; third cubital cellule so much contracted at base that its extreme 

 nervure is opposite to and joins the recurrent nervure. Length about half an 

 inch; 13 mm. (Say.) 



Hab. — Arkansas and Missouri. 



Hiitilla Sayi Blake. 



Male.-— Head transverse, rounded, black, moderately punctured, face thinly 

 clothed with whitish pubescence ; antennae piceous, scape clothed with glittering 

 pubescence ; eyes large, ovate emarginate ; mandibles dark rufous before the tip ; 

 thorax robust, ovate, narrowed posteriorly, pro- and mesothorax rufous, closely 

 punctured, the latter bearing three discal, longitudinal, slightly impressed lines ; 



