1948] 
Banks — Chrysopidae 
171 
vertex (in some specimens faint or absent) ; antennae 
pale, but in some with a faint reddish transverse mark 
on the front of basal antennal joint. 
In the wings (both sexes) the divisory cell is abont 
two and one-half times as long as broad, and ends beyond 
the cross-vein, the base occupies fully one-half of the 
cross-vein, seven cubitals beyond divisory cell, mostly 
oblique ; gradates nine in each row, rows parallel in fore 
wing, in hind wing seven inner, eight outer row, in both 
wings the inner row is about as near to radial sector as 
to outer row ; costal area not as broad as radial area, cub- 
ital area little more than one-half of marginal area, 
branches of cubitus sloping; about 25 or 26 costals, the 
fifth slightly sinuous. 
Length of fore-wing ? 17. mm., width 6. mm. 
From Lomas de Chapultepec, Mexico City, 25 July, 
4, 15, 22, 27, Aug., 22 Oct. The wings of the only male 
are crumpled, and probably about 14 mm. long. 
Type : M.C.Z. no. 27996. 
Meleoma colhuaca sp. nov. 
Figures 9, 14, 29, 34 
Male. Face, vertex, pronotum, greenish ; thorax green 
on sides with a pale yellowish median stripe; vertex of 
head swollen, yellowish; abdomen dull green, venation 
also, many cross-veins at least partly black, tips of palpi 
black. Head similar to M. mexicana, the swollen front 
part with short erect hairs above ; the antennas very 
widely separated, the basal joint crowding the eye, near 
the inner base of each basal joint is a rounded lobe, the 
upper part plainly bilobed, between the two is a slender 
projection forward from the vertex downward, elongate, 
and faintly trilobed at tip. The basal joints are short, 
enlarged at tip, without elongate impression on lower 
inner side, but a slight impression on outer side where 
it rests against the eye. The vertex is swollen, roundedly 
triangular, the occiput is reddish. The pronotum is 
broadly dark green on each side, and pale yellowish in 
middle; the green (somewhat paler) extends over the 
lateral lobes of meso- and metanotum; the pronotum is 
