32 E. T. CRESSON. 



apical margin and narrow line extending from base of stigma along the trans- 

 verse nervures across the wing pale fuscous; second branchial cell without 

 cross-nervure or with rudiment of one; third submarginal cell longer than 

 the second; one specimen has only three submarginal cells, the dividing 

 nervure between the second and third wanting; coxse and femora more or less 

 black, anterior tibise without side spur; abdomen generally more or less dusky 

 at tip. Length .40 inch. 



Eah. — Mt. Washington, N. H., (Dimmock). 



Liyda nMjsropectns.— 9- — Black; spot on sides of face, anterior margin 

 of clypeus, spot in middle, spot at summit of eyes, line on cheeks continued 

 on to occiput, two ovate spots behind ocelli, base of mandibles, narrow pos 

 terior margin of prothorax, sublunate spot on middle of mesothorax anteriorly, 

 large spot on each side posteriorly, two dots on scutellum, small spot beneath 

 anterior wing and the tegulse, yellowish-white; mandibles fulvous, extreme 

 tips black; antennae slender, about twenty-six-jointed, fulvous, spots on scape 

 and apex of flagellum blackish, third joint twice the length of fourth ; wings 

 as in semidea ; legs fulvous, coxse and femora except tips black, anterior tibise 

 without side spur; abdomen honey-yellow, basal plates black; venter more or 

 less varied with blackish. Length .53 inch. 

 Hah. — Nevada, (Morrison). 



L<yda iiielliventris. — %. — Black, shining; head large; spot at sides of 

 face, spot between antennae, straight line leading from summit of eyes to 

 occiput, spot on lower part of cheeks, clypeus, mandibles except tips, palpi, 

 scape beneath, tegulse, dot before, sometimes a spot on middle of mesothorax 

 anteriorly, spot on scutellum, sometimes one on postscutellum, and the legs, 

 pale lemon-yellow; antennae about twenty-two-jointed, brown, the three basal 

 joints above black, third joint a little longer than the fourth; wings hyaline, 

 faintly dusky, subiridescent, nervures brown, second branchial cell with in- 

 complete cross-nervure, third submarginal cell large, about equal in length 

 with the second; coxae except tips and spot on four anterior femora at base 

 above black, anterior tibise without side spur; abdomen honey-yellow, basal 

 plates black. Length .30 inch. 

 Hab. — Nevada, (Morrison). 



l<y«Ia rufocineta. — %. — Black, shining; face, clypeus, anterior orbits, 

 line on posterior orbits, mandibles except tips, palpi, scape beneath, tegulae, 

 spot on scutellums, angular line beneath anterior wings, and the legs, pale 

 yellow; face concave, the margins prominent, subcarinate, with a longitudinal 

 ridge on middle of clypeus ; an angular yellow carina between ocelli ; antennae 

 about twenty-six-jointed, third joint half again as long as the fourth; wings 

 faintly dusky, iridescent, nervures black, second branchial cell with incom- 

 plete cross-nervure, third submarginal cell longer than the second; coxae 

 except tips black, anterior tibiae without side spur; abdomen polished, third 

 and fourth segments honey-yellow. Length .35 inch. 

 Hab. — Colorado, (Morrison). 



Liyda Rileyi. — 9 -—Black, shining ; cheeks, narrow anterior orbits, dilated 

 at summit of eyes, and continued back to line on posterior margin of head, 

 a rounded spot on sides of face confluent with orbital line, two uneven spots, 

 divided by the suture, behind ocelli, clypeus, a square spot on middle of vertex 



