1948] 
Banks — Chrysopidae 
159 
the cross-vein. From the third cnbital cell there is but 
one vein behind, but it forks, equally in both wings, only 
one branch behind from the fourth cell ; six cubitals be- 
yond end of divisory cell. In fore wings five gradates 
in each row and almost parallel, but both rows slope up- 
ward more than usual, the inner row much nearer to 
radial sector than to the outer row; the inner gradates 
strongly disjoint the sectorals ; the median vein ends fur- 
ther out on margin than usual, the end being as far out 
as the end of the stigma. 
In hind wing there are four gradates in each row, the 
inner row much nearer to radial sector than to outer row, 
and also strongly disjointing the sectorals, the costal 
cells are mostly twice as long as high. 
Length of fore wing 12.5 mm., width 4.1 mm. 
From Navojoa, Sonora, 24 March, 1927. 
Type: M.C.Z. no. 27995. 
The marks on vertex resemble those given by Navas 
for his Leucochrysa delicata; hut trifurcata is not a Leu- 
coclirysa; the face has various red marks; Navas says 
head etc. “subtota fusca.” moreover he figures the pro- 
notnm broader behind, in trifurcata the sides are 
parallel. 
Chrysopa bouvieri Navas 
Figures 16, 20 
From Vergel, Chiapas 18, 30 May, 3 June; Finca Ger- 
mania, Chiapas, Sierra Madre del Sur, 20 June; Coffee 
Plantation, Sierra Madre del Sur, Chiapas 11 May; Es- 
peranza Plantation, Sierra Madre del Sur, Chiapas, 5 
March, all in forest. 
The red of the anterior spots usually extends forward 
onto the vertex as a line near each eye. Costal area very 
broad near base, equal to the radial area; 19 to 22 cos- 
tals, the third usually slightly sinuous ; three to four 
inner gradates and about eight outer, the inner more or 
less divergent and generally nearer the radial sector, 
first of inner gradates bends the sectoral at juncture; 
divisory cell full twice as long as broad; cubital area 
