172 Psyche [Dec - 
much broader than long, the sides parallel, but close to 
head narrowed. 
The wings are fairly long and slender; the gradates, 
costals, and some basal cross-veins black, many others 
dark at ends ; the divisory cell ends at or near the end of 
the third cubital cell, it is about three times as long as 
broad, the base occupying one-half of base-vein; seven 
cubitals beyond end of divisory cell. About ten gradates 
in each series in the fore wing, sectorals scarcely bent 
by the gradates; in the hind wing nine inner and ten 
outer gradates ; in both wings the rows are parallel and 
the inner row about as near radial sector as to the outer 
row. 
The radial area is much broader than costal area; 
about thirty costals, the fifth sinuous ; about fifteen radial 
cross-veins, in all, except the first two or three, the vein 
is swollen except at ends ; likewise most of the sectorals 
are also swollen ; the venation is densely haired, the hairs 
mostly fairly short, the costals however are not so 
thickly haired. The cubital area is about two-thirds of 
the marginal, both cubitals and marginals oblique ; about 
twenty-eight costals, the fifth sinuous. 
Length of fore wing 16 mm., width 5.6 mm. 
One from Lomas de Chapultepec, Mexico City, 23 June. 
Type: M.C.Z. no. 27999. 
Explanation of Plate 18 
1. Chrysopa trifurcata, face. 
2. Chrysopa trifurcata, vertex. 
3. Chrysopa calif ornica, basal antennal joint. 
4. Chrysopa castalia, lower paH of face. 
5. Chrysopa acolhua, face. 
6. Chrysopa arioles, vertex. 
7. Chrysopa tezcucana, vertex, pronotum, mesonotum. 
8. Chrysopa incisa, pronotum, left; lower part of face, right. 
9. Meleoma colhuaca, basal antennal joints, and interantennal process. 
10. Chrysopa exotera, pronotum. 
11. Chrysopa tezcucana, face. 
12. Meleoma hageni , side of head, and interantennal process. 
13. Meleoma mexicana, side of head, and interantennal process. 
14. Meleoma colhuaca, side of head. 
