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 Netnobius, 

 Ai. Ovipositor as long as or barely shorter than the hind femora, generally rigidly 

 straight. 



b'. Tip of ovipositor unarmed; last joint of maxillary palpi very obliquely ex- 

 cised at apex. 



c^ Tegmina short; wings wanting ; last joint of maxillary palpi bicolored, 

 the oblique apical excision of lower margin beginning before the mid- 

 dle distinguendus. 



c^. Tegmina long; wings very long ; last joint of maxillary palpi unicolored, 

 the obli€|ue apical excision of lower margin beginning beyond the middle 



, ensif er. 



\fl. Tip of ovipositor serrate or dentate ; last joint of maxillary palpi almost 

 transversely excised at apex. 



ci. Ovipositor distinctly (at least a tenth) longer than hind femora. 



di. Blackish; dark and light colors of tegmina of 9 feebly contrasted 



longitudinally above (Northern) fasciatus. 



d2. Grayish ; dark and light colors of tegmina of 9 strongly contrasted 



longitudinally above as on sides (Southern) canus. 



c^. Ovipositor barely as long as, or slightly shorter than, hind femora. 



di. Teeth of ovipositor blunt, little elevated ; wings generally .very long 



socius. 



d^. Teeth of ovipositor sharp, well elevated, well separated; wings 

 wanting. 



el. Tegmina of 9 nearly or quite twice as long as pronotum ; of 

 (J strongly rounded apically, feebly margined with pallid at sides 



of dorsal field only, if at all Utahensis. 



e^. 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'^. Ovipositor distinctly shorter than the hind femora, usually a little arcuate. 



bi. Tegmina of 9 nearly or quite as long as the abdomen ; wings generally 

 twice as long as tegmina. 



ci. Ovipositor no longer, or scarcely longer, than head and pronotum to- 

 gether. 



d'. Face without vertical pale stripes ; lateral field of 9 tegmina 

 tapering only on the apical third, subequal before it..neomexicanus. 

 d^. 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 tritlitatis. 



c^. Ovipositor distinctly longer than head and pronotum together. 



di. Tegmina of 9 apically truncate, a little shorter than the abdo- 

 men ; wings wanting aterrimus. 



d^. Tegmina of 9 apically rounded, as long as the abdomen ; wings 

 generally present and then very long cubensis. 



