NORTH AMEKICANT HYMENOI'T KRA. 243 



metaiiotuni with a polislioil fovea at base and apex, which are connected by a 

 very faint furrow ; first joint of hind tarsi sliglitly longer than the two following 

 joints united ; first joint of the medial tarsi almost as long as the three follow- 

 ing. Abdomen beneath finely and evenly punctured ; emargination of the last 

 ventral plate broad and round. Length 9 — 13 mm. 



Texas, Illinois, Nebi-aska, Colorado, California, Washington. 



10. TacliyteK riilvivciitrii^ Cress. PI. XI, fig. 16. 



9 . — Clypeus broadly produced anteriorly, with two large teeth at the extreme 

 side; space betwe,en eyes at top greater than the length of antennal joints 2 and 

 3; vertex with exceedingly fine and close punctures, the medial impressed line 

 distinct, but not strong; first joint of flagellum decidedly longer than the second, 

 which is about equal to the following joint, joints 7 — 9 not more than twice 

 longer than broad. Thorax punctured like the vertex; scutellum not impressed 

 medially; metanotum finely granulated, not sulcate, the fovea at apex distinct 

 and with fine transverse striations, posterior face strongly furrowed ; tibise with 

 strong thorns; ventral abdominal segments 3 — 6 sparsely punctured ; pygidium 

 bronzy, in certain lights silvery-black ; mandibles rufo-piceous. tibial spurs, tarsi 

 more or less, and abdominal segments 1 — 3 ferruginous; front, clypeus. scape, 

 thorax, legs, except posterior femora, apical portion of segments 1 — 4 above and 

 on segments 2 and 3 beneath silvery; dorsulum. occiput, metathorax and first 

 dorsal segment above with grayish hair. Wings hyaline, nervures ferruginous. 

 Length 12 — 17 mm. 



%. — Clypeus produced anteriorly as in the male oi pepticns ; space l)etweeu 

 eyes at top a little greater than the length of joints 2 and 3 of-the antennte ; 

 first joint of flagellum narrowed about one-third towards the base, distinctly 

 longer than the second joint, which is about equal to the third ; joints 9 — 11 of 

 antenuje broadened, the twelfth joint much Tiarrower than the jireceding one, 

 the last joint elongate, dorsulum more strongly depressed anteriorly than in the 

 female; scutellum very slightly impressed medially, sulcus on posterior face of 

 metathorax longer than the female, extending nearly to the apex; first two seg- 

 ments, sometimes first three, reddish ; cm;irgination of eighth veiiti-al i)l;ite 

 broad, rounded. Length 11 — 14 mm. 



Var. Al)domen entirely black. 



Texas, Nebraska, Colorado, N. Mexico, ^lontana, Washington. 



11. Tacliytes !i>pat.iilatii!$ n. sp. PI. XI, fig. 17. 



% . — Clypeus similar to fulviventris ; space between the eyes at top about equal 

 to the length of antennal joints 2 and 3, at any rate not greater; first joint of 

 flagellum not narrowed so much as in fulviventris, distinctly longer than the 

 second, which is also narrowed basally, the tenth and eleventh joints somewhat 

 spatulate, joints 7 — 9 narrowest ; scutellum not impressed ; metanotum not at all 

 sulcate, the fovea at apex distinct and with fine, indistinct, transverse striations, 

 emargination of last ventral segment much narrower than in fulviventris, black ; 

 mandibles rufo-piceous, apical joints of the tarsi and abdominal segments 1 2 

 and base of the third, ferruginous; front, clypeus, sides of thorax, four anterior 

 femora with silvery-gray pubescence. Head and thorax above and first seirment 

 of abdomen with long, pale pubescence; apical margins of segments 1 — 4. the 

 seventh entirely, the tibise and tarsi with silvery pile. Wings subhyaline, 

 nervures dark. Length 12 mm. 



Nevada. 



TRANS. AM. ENT. SOC. XIX. AUGUST, 1892. 



