100 Journal New York Entomological Society. [voi.iv. 
the species are unknown to me. Only the more important synonymy 
is given. 
Table to determine the N. A. species, of Nemobius. 
A 1 . Ovipositor as long as or barely shorter than the hind femora, generally rigidly 
straight. 
b 1 . Tip of ovipositor unarmed; last joint of maxillary palpi very obliquely ex¬ 
cised at apex. 
c 1 Tegmina short; wings wanting ; last joint of maxillary palpi bicolored, 
the oblique apical excision of lower margin beginning before the mid¬ 
dle.. distinguendus. 
c 2 . Tegmina long; wings very long; last joint of maxillary palpi unicolored, 
the oblique apical excision of lower margin beginning beyond the middle 
...ensifer. 
b 2 . Tip of ovipositor serrate or dentate; last joint of maxillary palpi almost 
transversely excised at apex. 
cb Ovipositor distinctly (at least a tenth) longer than hind femora. 
d 1 . Blackish; dark and light colors of tegmina of 9 feebly contrasted 
longitudinally above (Northern). fasciatus. 
d 2 . Grayish ; dark and light colors of tegmina of 9 strongly contrasted 
longitudinally above as on sides (Southern). canus. 
c 2 . Ovipositor barely as long as, or slightly shorter than, hind femora. 
d 1 . Teeth of ovipositor blunt, little elevated; wings generally very long 
.socius. 
d 2 . Teeth of ovipositor sharp, well elevated, well separated; wings 
wanting. 
e 1 . Tegmina of 9 nearly or quite twice as long as pronotum; of 
$ strongly rounded apically, feebly margined with pallid at sides 
of dorsal field only, if at all. utahensis. 
e 2 . Tegmina of 9 scarcely longer than pronotum ; of $ broadly 
rounded apically, with the dorsal field distinctly margined with 
pallid throughout except at base. ambitiosus. 
A 2 . Ovipositor distinctly shorter than the hind femora, usually a little arcuate. 
b 1 . Tegmina of 9 nearly or quite as long as the abdomen; wings generally 
twice as long as tegmina. 
c 1 . Ovipositor no longer, or scarcely longer, than head and pronotum to¬ 
gether. 
d 1 . Face without vertical pale stripes; lateral field of 9 tegmina 
tapering only on the apical third, subequal before it..neornexicanus. 
d 2 . Face with a pair of narrow, vertical, percurrent, pale stripes next 
the inner margin of the eyes; lateral field of 9 tegmina regularly 
tapering almost from the base. trinitatis.. 
c 2 . Ovipositor distinctly longer than head and pronotum together. 
d 1 . Tegmina of 9 apically truncate, a little shorter than the abdo¬ 
men; wings wanting. aterrimus. 
d 2 . Tegmina of 9 apically rounded, as long as the abdomen; wings 
generally present and then very long. cubensis.. 
