AMERICAN HYMENOPTERA. 237 



3S. Mutilla Asopus, Crcsson, Proc. Ent. Soc. Phil. Vol. IV, p. 435. 



il/a/c— Black ; head and thorax above and second abdominal secjinont red, 

 wings blackish, eyes round. Length 5i lines, exitanso of wings 9i lines. 

 Hal). — Colorado. 



."iO. Mutilla Hector, n. sp. 



Male. — Head black, round, coarsely punctured, clothed with coarse ferrugi- 

 nous pubescence; eyes small, round, prominent ; antennre black, scape closely 

 punctured. Thorax ovate, j)ostcriorly narrowed, pro- and mesothorax clothed 

 above with dense coarse ferruginous pubescence, meta thorax roundly truncate> 

 coarsely reticulate, dorsal groove not extending to the middle, sides closely 

 punctured. Wings fuliginous, marginal cell subovate, truncate at tip, first sub- 

 marginal nearly as large as the marginal, second wide beneath, receiving the 

 recurrent nervure before the middle, its apical nervure arcuate. Legs black, 

 with scattered black hairs. Abdomen ovate, basal segment campanulate, black, 

 closely punctured, second segment fulvo-ferruginous, finely punctured, bearing 

 a scatUjred ferruginous pubescence, its basal and apical margins black, remain- 

 ing segments black, clothed with dark ferruginous pubescence ; ventral surface 

 of second segment with a longitudinal carina. Length 5i lines, expanse of 

 wings 9 lines. 



Hab. — Kansas. Collection of Mr. Norton. 



This may prove to be the male of M. jEgina, Cresson. 



40. Mutilla monticola, Cresson, Proc. Ent, Soc. Phil. Vol. IV, p. 430. 



Mule — Black, liead and thorax with yellowish white pubescence, wings 

 blackish, paler about the middle, abdomen ferruginous, segments fringed with 

 blackish pubescence, eyes round. Length 4 — 6 lines, exiJanse of wings 6i — 8 

 lines. 



Hah. — Colorado. 



41. Mutilla castor, n. sp. 



Male. — Black; head rounded, closely punctured, clothed with erect black 

 hairs; eyes round, prominent. Thorax elongate subquadrate, anterior angles 

 rounded, densely punctured, thinly clothed with long black pubescence, met a- 

 thorax roundly truncate, closely reticulate. TeguljB round, polished. Wings 

 ample, blackish, marginal cell elongate subquadrate, truncate at tip, second 

 submarginal subtriangular, wide beneath, receiving the first recurrent a little 

 before the middle, third sub-pentagonal, so much narrowed at base that its ex- 

 treme nervure is op[)osite to and joins the second recurrent. L?g5 black, tliinly 

 clothed with black hairs. Abdomen ovate, petiolate, petiole closely luinctured, 

 having a longitudinal carina on cacli side, clothed witli erect blackish haii'S, 

 disc dark ferruginous, base and apical margin black, second segment having 

 tlie basal half castaneous, apical lialf bright ferruginous, apical margin and 

 following segments black, clothed with tlense black pubescence: underside of 

 second segment castaneous, the abdominal fovea large and deep. Length h\ — 

 8i lines, expanse of wings 9 — 13 lines. 



Iluh. — Kansas ; Texas. 



In some individuals the petiole and ba^al half of second abdominal 

 segment is entirely black. The neuration of the wings in this species 

 is similar to that ut M. cuutruclu, described by 8ay. 



TUANS. AllliU. E.NT. SOC. (31) lliUlU AltV, 1S71. 



