244 CHARLES A. BLAKE. 



finer at apical margin, which is fuscous, and fringed with dark hairs; second 

 segment closely punctured, thinly clothed with glittering white hairs, apical 

 margins fuscous, thinly fringed with black hairs, third and fourth segments 

 somewhat darker, finely punctured, apex black. Length 7 mm. ; expanse of 

 wings 12 mm. 



Hab. — Massachusetts. Collection of Prof. Agassiz. 

 This may prove to be the male of 8. simillima Smith. 



Sphserophthalma flavida Blake. 



Male. — Head and thorax black, the former subquadrate, posterior angles 

 rounded, closely punctured, vertex thinly clothed with pale yellowish hairs; 

 eyes round, prominent ; thorax closely punctured ; prothorax, sides and scutellum 

 clothed with pale hairs, metathorax roundly truncate, closely reticulate ; tegulse 

 ovate, closely punctured ; wings pale fuscous, faintly iridescent, marginal cell 

 elongate ovate, rounded at tip ; first submarginal long and narrow ; second sub- 

 triangular, obliquely narrowed towards base, its basal nervure sinuate, receiving 

 the first recurrent at middle, third narrowed beneath, receiving the second re- 

 current at middle, its apical nervure faintly defined ; legs black, thinly clothed 

 with pale hairs, calcaria pale ; abdomen elongate ovate, basal segment campanu- 

 late, fuscous, finely punctured, the apical margin fringed with golden pubescence ; 

 second segment, except base and apical margins, which are fuscous, bright yel- 

 low, finely punctured, the punctures more dense at sides, remaining segments 

 black, margined with fuscous, finely punctured, fringed with orange-yellow pu- 

 bescence ; under side of abdomen blackish brown, finely punctured. Length 

 11 mm. ; expanse of wings 16 mm. 



Hab. — Texas. 



Spha^rophthalma laticeps Blake. 



Male. — Black ; head quadrate, wider than the thorax, posterior margin concave, 

 angles acute, very finely punctured, clothed with scattered white hairs ; antennae 

 and mandibles black, the latter clothed with fine white hairs : eyes round ; thorax 

 elongate quadrate, pro- and mesothorax finely punctured, metathorax reticulated, 

 rounded ; wings subhyaline, iridescent, submarginal cell ovate lanceolate, first 

 submarginal, bisected by a white line, second receiving the first recurrent ner- 

 vure a little before the middle ; tegulse round, polished ; legs black, clothed with 

 white hairs, calcaria white ; abdomen ovate, shining, first segment campanulate, 

 with a small tubercle on each side near the base, second segment with remote, 

 minute punctures bearing a few scattered silvery hairs ; apical segments thinly 

 fringed with the same ; under side of entire insect clothed with scattered hairs. 

 Length 6.5 mm. ; expanse of wings 12 mm. 



Hab. — Mexico. Prof. F. Sumichrast. 



Nptiuvi'oplitlialiiia grandiceps Blake. 



Male. — Bright ferruginous ; head subquadrate, nearly three times as wide as 

 the thorax, hind margin deeply concave, posterior angles produced into acute 

 teeth, finely and closely punctured, cheeks armed posteriorly beneath with a 

 long acute spine ; mandibles long, bidentate at the tips, which are blackish ; an- 

 tennae : scape and two basal joints of flagellum pale ferruginous, remaining 

 joints fuscous; eyes small, round ; thorax elongate subquadrate, feebly narrowed 



