440 [June 



scutellum subdepressed, rugose, with a transverse excavation at base ; 

 metathorax rounded, coarsely reticulated, with a double shining space 

 at base, enclosed by well-defined carinae ; tegulse luteous. Wings ample, 

 obscure hyaline ; nervures testaceous, stigma fuscous ; marginal cell 

 elongate, regular, pointed at tip ; two submarginal cells, shaped as in 

 M. clava ; third submarginal cell obliterated. Legs luteous, with long 

 whitish pubescence ; the four posterior femora and tibiae, except ex- 

 treme base and apex, more or less blackish. Abdomen elongate, petio- 

 lated, oblong-ovate, smooth and shining, clothed with a long, thin, whit- 

 ish pubescence, very sparse on the disk of the large basal segment, but 

 rather dense on the apical margins of all the segments above and be- 

 low ; the first or petiole segment elongate, rather slender at base and 

 swollen beyond the middle, with a small prominence on each side about 

 the middle. Length 4] — 5 lines; expanse of wings 8 — 8i lines. 



Two specimens. Allied to the preceding species, but easily distin- 

 guishec, by the hyaline wings. 



20. Mutilla nubecula, n. sp. 



Obscure honey-yellow, clothed with sparse pale pubescence; antennae and 

 legs luteous; wings hyaline with a fuscous cloud beyond the stigma; three 

 submarginal cells. 



Male. — Uniform dull honey-yellow, shining, thinly clothed with a 

 rather long whitish pubescence; eyes large, round, entire and very 

 prominent, as well as the ocelli ; tips of mandibles black ; antenna- 

 longer than the head and thorax, luteous-yellow. Thorax above shin- 

 ing, with scattered punctures, those on the pleura very dense ; meta- 

 thorax rugose; tegular honey-yellow. Wings hyaline, faintly iridescent, 

 with a rather large fuscous cloud just beyond the marginal cell; ner- 

 vures yellowish; stigma rather large and blackish; marginal cell short, 

 not longer than the stigma, broadly rounded at tip ; three distinct sub- 

 marginal cells, the second small, subtriangular and receiving the two 

 recurrent nervures, the third still smaller and quadrate, the apical ner- 

 vure about on a line with the tip of the stigma. Legs entirely luteous- 

 yellow. with thin pale pubescence. Abdomen oblong-ovate, pointed at 

 tip, petiolated, rather closely punctured, shining and with a scattered, 

 long pale pubescence ; the first or petiole segment half the length of 

 the whole abdomen, very slender at base, with the posterior half greatly 

 swollen and ovate ; the extreme apex of the abdomen with a short. 

 acute, recurved spine, and the fourth and fifth ventral segments have 

 at the extreme apical middle of each, two tufts of erect setas. Length 

 3j — 4 lines ; expanse of wings 6 — 7 lines. 



Two specimens. Easily recognized by the fuscous cloud beyond the 





