464 
abdominal tergites lighter. Hind margin of pregenital plate turbinate or 
angular with curved sides, reaching nearly to apex of styles. 
Described from thirty-five males and twelve females, feed- 
ing on two species of Inga: I. vera and I. laurina (G. N. Wol- 
cott, August, 1922, Acc. No. 279-23). 
Type in H. S. P. A. Experiment Station collection, Hono- 
lulu, No. 1136; paratypes in U. S. National Museum, Washing- 
ton, and G. N. Wolcott’s collection. 
DICTYOPHARIDAE. 
Parahydriena gen. nov. 
Se-++-R fork and M fork at cross-veins, M4 appearing as arising from 
cross-vein, Cu fork considerably basad of these, about one-third from apex 
of clavus, M1 and 2 fork at apical cross-veins, M with five apical veins, 
1, 2, 3, 4, 4 a; a single line of apical cross-veins; claval fork about one- 
third from base, apex entering commissure near apex, no cross-velms in 
clayus; Se-+R-+M making a short stalk at base. Apical half of vertex in 
the middle raised into a deep keel which in profile is subangular; frons 
long, narrow, base half the width of apex, basal third subparallel sided 
beyond which widening with sides slightly arcuate, widest before apex; 
lateral margins keeled, two median longitudinal carinae which meet to- 
gether at apex; clypeus tricarinate. Pronotum short in middle with a 
median carina, wider at sides with a single, curved carina behind eyes; 
mesonotum tricarinate, carinae straight, laterals slightly diverging pos- 
teriorly, posterior angle divided off by a slight depression, but not by a 
suture or line. Front legs simple, not expanded, front tibiae and femora 
subequal in length, without spines; hind tibiae with three spines on apical 
half. 
This genus approaches Hydriena Melichar in having two 
medio-frontal carinae, but the shape and nature of the elevated 
portion of the vertex appear to differ, and the front legs are 
not exceptionally long. 
Type P. hyalina. 
Parahydriena hyalina sp. nov. Plate XII, Figs. 3, a, b, c. 
Female. Length, 4.2 mm.; tegmen, 5.7 mm. 
Yellow or light stramineous; carinae of head, sides of elypeus, lateral 
portion of cephalic projection and sides of head below it dark, also dark 
over carinae of thorax, a thin line in middle of lateral portions of pro- 
notum, a dark mark over coxae and pleura of thorax; the apical half of 
abdominal tergites and fifth, sixth, and seventh sternites dark. Tegmina 
and wings clear hyaline, veins light brown. 
