156 
Psyche 
[Dec. 
Length of fore-wing, 14 mm., width 4.3 mm. 
One from La Venta, southwest of Mexico City, 2800 
m. alt., forest, 22 May. 
Type: M.C.Z. no. 27994. 
Chrysopa mexicana Bks. 
Figures 13, 17, 20, 37 
The venation is largely green; there are twenty-four 
costals, dark at upper end; the fourth and fifth slightly 
sinuous ; eight inner gradates, nine outer, parallel, inner 
much nearer to outer than to radial sector; costal area 
about as broad as radial, cubital area about two-thirds 
of marginal area ; in hind wing six inner and seven outer 
gradates, placed as in fore wing. In both wings several 
of the sectorals are bent by the inner gradates ; in fore 
wing six forks beyond end of medius before the wing- 
tip. Palpi lined and last joint almost wholly black; the 
hairs on veins are quite long and reach half way across 
the slender costal cells. 
From Presa San Jose, San Luis Potosi, 23 November. 
Chrysopa acolhua sp. nov. 
Figure 5 
Face with a reddish lunule under base of each antenna ; 
a narrow, reddish band below from under each eye and 
across base of clypeus, latter with a reddish spot each 
side; palpi mostly pale, but marked with dark; antennae 
pale, basal joint in front with an elongate reddish streak 
or triangle on the lower part; vertex with a red border 
each side close to eye, and a more narrow border to upper 
side of the antennal sockets, united to form an acute 
angle between antennae. Pronotum much broader than 
long ; each side is broadly reddish brown, leaving a much 
more narrow pale median area; thorax and abdomen 
without markings (but possibly with some when fresh). 
Wings long and moderately slender, venation pale, 
stigma scarcely darkened; costal cells on basal half of 
wing not numerous, and few, if any, twice as high as 
long, 20 costals before stigma, last four very short; divis- 
