AMERICAN IIYMENOPTERA. 73 



Two specimens from Bosque Co. This species is closely allied to 

 falvohirta, Cress., but may be readily distinguished by the clothing of 

 the head and thorax being black, and having the third submarginal 

 cell distinct. One variety has the thorax and apical segment of the 

 abdomen clothed with fulvous pubescence. 



Multilist yEgina, Cress.— Synopsis, p. 235. 



Two 9 specimens from Dallas Co. have the pubescence paler and 

 brighter than those from Colorado ; the apical segment of the abdomen 

 is black, as well as the pubescence of the legs. 



Mutilla occidentalis, Linn.— Synopsis, p. 236. 



Five % 9 specimens from Dallas Co. Some of the 9 specimens 

 have the pubescence bright fulvous, with a golden sericeous lustre 

 when viewed obliquely. 



Mat ilia Creusa, Cress.— Synopsis, p. 236. 



Seven 9 specimens from Dallas Co. 



IVIutilla bioeulata, Cress. — Synopsis, p. 236. 



Three £ specimens. One specimen from Dallas Co. has the second 

 abdominal segment almost entirely yellow-ferruginous. 



IVIutilla Castor, Blake, Synopsis, p. 237. 



Three % specimens from Dallas Co. This species may be distin- 

 guished from fenestrate/, by the basal segment of abdomen being more 

 nodose and castaneous, while in the latter species it is invariably 

 black. 

 Mutilla fenestrata, St. Farg.— Synopsis, p. 238. 



Four % specimens from Dallas and Bosque Counties. 

 Mutilla Creou, n. sp. 



% . — Ferruginous; head round, closely punctured, thinly clothed with erect 

 black hairs; scape of antennae castaneous, flagellum piceous. Eyes round, pro- 

 minent. Thorax ovate, densely punctured, sparsely clothed with erect black 

 hairs,' metathorax roundly truncate, coarsely reticulate. "Wings moderate, fus- 

 cous, subhyaline from base to beyond the middle, marginal cell subovate, round- 

 ly truncate at tip, three submarginal cells, second subtriangular, receiving the 

 first recurrent nervure at middle, third narrowed beneath, receiving the second 

 recurrent close to its apical nervure. Tegulse round, tufted posteriorly with 

 pale hairs. Legs black, thinly clothed with whitish hairs. Abdomen ovate, 

 petiolate, basal segment densely punctured, second segment fulvo-ferruginous, 

 darker at base, finely and closely punctured, apical margin black, third, fourth 

 and fifth segments black, clothed with long black pubescence, apical segments 

 with pale yellowish. Ventral segments fringed with pale yellowish hairs, apex 

 with two sharp longitudinal carinse. Length 5 lines ; expanse of wings 6i lines. 



One specimen from Bosque Co. 

 Mutilla Waco, Blake, Synopsis, p. 238. 

 One 9 specimen from Bosque Co. 



TRANS. ASIER. EXT. S0C. IV. (10) MARCH, 1872. 



