A50O PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
Subfamily KINNARINAE 
BYTROIS, new genus 
Vertex small, short, shallowly excavated basally, lateral margins 
greatly raised, strongly converging to level of middle of eyes, where 
they are joined by a short transverse carina; vertex in profile forming 
an unbroken curve with frons; frons narrow, deeply troughlike, lateral 
margins greatly elevated, gradually diverging to apex, apex about 
twice as wide as base, median carina absent, median ocellus distinct; 
frontoclypeal suture impressed; clypeus narrow, tumid, tricarinate; 
second segment of antennae more than twice length of first. Pronotum 
short, produced anteriorly into posterior emargination of head, shal- 
lowly excavate on hind border, median carina distinct, lateral carinae 
following hind margin of eyes, turning posteriorly between eyes and 
tegulae; mesonotum with disk flat, curved upward at scutellum, median 
carina distinct, lateral carinae somewhat less so. Hind tibiae un- 
armed, sometimes with eight or nine minute denticles. Tegmina with 
costal cell wide, Sc+R forking slightly before stigma, common stalk 
Sce+R+M fully two-thirds as long as basal cell; typically ten apical 
cells and an anteapica] series of five cells, of which the anterior three 
are large; claval suture meeting commissural margin beyond middle 
of tegmen, clavus not granulate. Wings with third apical cell of M, 
a triangular cell, subequal in length to its stalk. Anal segment of 
male not bifid. Ovipositor incomplete. 
Genotype: Bytrois nemoralis, new species. 
BYTROIS NEMORALIS, new species 
PLATE 11, FIGURES 221-229 
Male: Length, 2.1mm.;tegmen,3.3mm. Female: Length, 2.3 mm.; 
— tegmen, 3.5 mm. 
Vertex, frons, genae before antennae, lateral lobes of pronotum, 
pleura, procoxae and mesocoxae, and ventral sclerites of abdomen dark 
fuscous to piceous; clypeus, genae below antennae, basal segment of 
antennae, pronotum dorsally, mesonotum, protarsi and mesotarsi, post- 
femora, and abdominal tergites lighter fuscous; carinae of head and 
pronotum, second segment of antennae, and genitalia testaceous or pale 
fuscous; rostrum, profemora and mesofemora and tibiae, metatibiae 
and tarsi, and membrane of abdomen pallid. 
Anal segment of male rather short, in dorsal view narrowed apically, 
shghtly indented on posterior margin. Pygofer short, rather deep 
dorsoventrally, lateral margins excavated in upper half, produced into 
a blunt lobe at level of genital styles, ventral surface of pygofer tumid. 
Aedeagus short, consisting of a broad, short dorsal hoodlike lobe, flat 
above, curved downward laterally, with posterior margin sinuate, 
