232 CHAS. A. BLAKE. 



DIVISION III. 

 17. Mutilla Copano, n. sp. 



Male. — Head and thorax black, coarsely reticulate, head subquadrate, not 

 quite as wide as the thorax, thinly clothed with short silvery hairs ; antenuse 

 black, scape punctured, mandibles ferruginous before the tips; eyes vate.eniar- 

 ginate. Thorax robust, narrowed behind, anterior angles of prothorax 

 produced into acute teeth, posterior margin carinate, sides of meso- 

 thorax dilated, clothed with silvery pubescence, metathorax roundly truncate. 

 Wings pale fuliginous, hyaline at base ; marginal cell sub-lanceolate, obliquely 

 truncate at tip, first and second submarginal cells about equal, the second sub- 

 triaugular, receiving the recurrent nervure beyond the middle, third obsolete; 

 second discoidal cell large; tegulse large, ovate, closely punctured, posteriorly 

 ferruginous. Legs black, thinly clothed with white hairs, calcaria white. Ab- 

 domen ovate, ferruginous, basal segment small, punctured, with a ventral 

 carina terminating in an acute tooth anteriorly; second segment finely and 

 closely punctured, apical margin clothed with silvery pubescence ; the remain- 

 ing segments fringed with a thin golden pubescence, ventral surface same as 

 above, lateral carinse distinct. Length 4 lines, expanse of wings 5 lines. 



Ilah. — Texas. Belf'rage. 



Subgenus SPH^EROPTHALMA. 

 This subgenus is distinguished by the circular, convex, polished 

 eyes. The species are quite numerous, and may be divided into two 

 divisions, viz : 



Division I. — First abdominal segment small, more or less nodose and con- 

 stricted at ajjex, as in figures 6 and. 7. 



Division II. — First abdominal segment gradually dilated to apex, where it is 

 sessile with the base of second segment, as in figures 8 and 9. 



DIVISION 1. 



This may be again divided into two subdivisions, viz : 



Subdivision I. — Head broad and quadrate behind the eyes, which are very 

 prominent, though small, and placed close to base of ^.^-s^ss^ 



mandibles, these latter are broad and protruding, mak- 

 ing the face deeply concave; neuration of anterior wing 

 as represented by figure 10. V\G. lo! 



Subdivision 77.— Head subtransverse or subquadrate, not remarkably enlarg- 

 ed behiud the eyes; neuration, generally, as represented by figure 3. 



Subdivision I. 

 IS. Mutilla scaeva, n. sp. 



3fa/c._Black, head rounded, as wide ns the thorax, closely punctured, space 

 above and between the eyes rufc -ferruginous, with short erect hairs; antennse 

 black, the scape finely punctured; eyes round, prominent. Thorax sub-quad- 

 rate, narrowed posteriorly, mesothorax elevated, metathorax abruptly rounded, 

 coarsely reticulated. Wings ample, fuliginous, marginal cell elongate-ovate, 

 slightly rounded at tip; two distinct submarginal cells, first moderately long 



and narrow, second about half as large as the marginal, receiving the first re- 

 current nervure a little before the middle. Legs black, clothed with scattered 



black hairs, posterior tibioc armed with a siugle spur. Abdomen ovate, basal 



