82 E. T. CRESSON. 



which is narrowed at base; thorax densely punctured, dull ferruginous, the 

 sides and metathorax thickly clothed with pale pubescence, the sutures of 

 thorax, stripe on middle of mesothorax, pleura beneath and most of metathorax 

 black; dot on each side of collar, spot on each side before scutellum, two spots 

 on postseutellum, spot on each side of metathorax nearly obscured by pubes- 

 cence, tubercles and an obscure spot on pleura, whitish ; scutellum subbilobate, 

 not very prominent; wings narrowly fuscous on apical margin; legs ferruginous, 

 the eoxse, femora and tibiae behind, and the tarsi more or less black; knees, tips 

 of tibiae and line or spots on four posterior tarsi white ; abdomen oblong, shining, 

 ferruginous, varied with black at base of the segments, segments 1 — 5 each 

 with a white band dilated laterally and narrowed medially, enclosing on each 

 side a small ferruginous or fuscous spot, the band on second segment sud- 

 denly dilated on the sides; venter white varied at base with dull ferruginous. 

 Length .40 inch. 



Hub. — Fort Tejou, California, (Crotch). One specimen. 



9foina<la crudelis. — 9- — Large, robust, opaque sanguineo-ferruginous; 

 tips of mandibles, dot on each side of clypeus, two spots behind antennae, line 

 connecting ocelli, flagellum, sutures of thorax laterally and beneath, three 

 obscure stripes on mesothorax and middle of metathorax, black; third joint 

 of antennae a little more than one-half the length of fourth; mesothorax 

 coarsely and confluently punctured; scutellum prominently bilobed ; wings 

 uniformly fuscous; basal half of first abdominal segment black. Length 

 .60 inch. 



Hah. — Georgia, (Morrison). One specimen. This and grandis 

 Cress., are our largest species. 



Bfoinada melliveiitris. — % . — Head and thorax black, opaque, densely 

 punctured, thickly clothed with a pale pubescence; lower corners of face, 

 clypeus, labrum, and mandibles except tips yellow; antennae black, ferrugi- 

 nous beneath, third joint one-third the length of fourth; thorax immaculate; 

 scutellum not at all prominent; tegulae yellowish; \?ings hyaline, dusky at 

 tips; legs pale ferruginous, coxae, trochanters and femora beneath, black; ab- 

 domen yellowish-ferruginous, subsericeous, two spots at base of first segment 

 and sometimes a dot on each extreme side of second, black; in one specimen 

 the second segment has an obscure yellowish spot on each side; venter im- 

 maculate, polished. Length .27 inch. 



Huh. — California, (H. Edwards). Two specimens. 



Osiris niexicanus.— 9 • — Black, smooth and polished; orbits, clypeus, 

 spot above, collar, scutellum, spot on each side at base, large mark on basal 

 middle of metathorax, tubercles and tegulae, pale yellow; antennae dull testa- 

 ceous, fuscous at tips and behind; collar bilobate; wings fuscous, with a strong 

 seneous reflection, stigma yellow; legs black or brown, clothed with a pale 

 silky pile, anterior pair in front, pale; abdomen polished, pale yellow, the 

 apical margin of the segments broadly black; venter black, the long apical 

 process yellowish. Length .40 inch. 



%. — Pale greenish-yellow, flagellum pale fulvous; a broad blackish stripe 

 on each side of mesothorax connected anteriorly by a transverse band; an- 

 terior margin of pleura narrowly black; wings yellowish- hyaline, faintly 

 dusky; legs pale yellow, the four posterior trochanters and femora fuscous 



