242 WILLIAM J. FOX. 



broadened JDto a somewhat pyriforru fovea at apex of upper face, the posterior 

 face more strougly sulcate ; tibife and tarsi armed with stout thorns, those on the 

 first joint of fore tarsi shorter than the third joint. Abdomen with exceedingly 

 fine punctures, shining ; basal portion of ventral segments 3 — 6 smooth, glabrous ; 

 apical portion of last ventral segment with large, separated punctures: pygidium 

 with bronzy pubescence, black : front, clypeus, cheeks, scape beneath, thorax 

 most densely beneath on the sides and in the sutures, femora and basal segment 

 of abdomen clothed with bright (sometimes pale) golden pubescence; collar sil- 

 very, basal half of mandibles, palpi, scape beneath, tegulie, apex of femora, tibise 

 and tarsi ferruginous ; dorsal segments 1 — 3 and ventrals 2 and 3, with their 

 apical margins silvery; apical margins of ventral segments testaceous. Wings 

 yellow hyaline, nervures ferruginous. Length 14 — 17 mm. 



% . — Antennae longer and stouter than in the female ; first joint of tiagellum 

 but little longer than the second, joint three a little longer than the fourth, 

 joints 2 — 4 slightly rounded out beneath; anterior margin of clypeus strongly 

 bowed in the middle, with three short, lateral teeth : space between the eyes at 

 top much narrower than in the female, about equal to length of first joint of the 

 flagellum ; impressed line on vertex indistinct or absent; scutellum strongly im- 

 pressed ; sulcus on metathorax rather strong; dorsal segments of abdomen 1 — 4 

 margined with silvery (the fifth shows a slight trace also) ; sixth and seventh 

 ventral .segments with tufts of dark hair; eighth ventral segment with a broad, 

 rounded emargiuation ; hind tarsi, except apex of joints 1 and 2, not spinose- 

 Length 13 — 14 mm. 



Connecticut, New Jer.sey (August), Virginia, S. Dakota (Aldrich) 



9. Tacliytes pepticus Say. 



9. — Anterior margin of clypeus in middle bituberculate, or appearing slightly 

 emarginate, with two large teeth at each extreme side; vertex finely and closely 

 punctured, the impressed line distinct; space between eyes at top about equal to 

 length of joints two and three of antennfe, third joint of antennae about one- 

 fourth longer than the following, which is distinctly longer than the fifth. 

 Thorax more finely punctured than the vertex, depression in the middle of 

 dorsulutn, anteriorly, strong; scutellum slightly impressed n)edially ; metanotum 

 vpith a very faint furrow, the fovea at apex not so distinct as usual, posterior 

 face of metathorax strongly sulcate, the sulcus short, broad at base, narrow and 

 acute at apex ; tibise and tarsi armed with strong spines, first joint of hind tarsi 

 shorter than the two following united. Abdomen beneath on basal portion of 

 segments 3 — 5 and on segment six sparsely punctured, segments 1, 2 and the 

 apical portion of segments 3 — 5, finely and closely punctured, black ; mandibles 

 piceous; palpi, tegulse and nervures, testaceous; last three joints of fore tarsi 

 and the apical joint of the four posterior ferruginous; front, face, clypeus and 

 sides of thorax clothed with silvery pubescence, brightest on face and clypeus; 

 base of mandibles, collar, suture of thorax, legs and apical margins of segments 

 1 — 4, dorsally, with silvery pile; in certain lights the first three dorsal segments 

 appear entirely silvery ; pygidium bronzy, median and hind tibiae more or less 

 with brown pul)escence. Length 13 — 15 mm. 



'^ . — Anterior margin of clypeus broadly produced ; third joint of antenna; 

 but little longer than the fourth, both these joints narrowed basally, the eleventh 

 joint normal and about equal to the twelfth; scutellum distinctly impressed ; 



