52 E. T. CRESSON. 



Scliizoccra tristis. — 9 -^Shining black; head very transverse, eyes 

 large, })roininent; flagellum flattened, subfusiform; wings hyaline, apical half 

 pale fuliginous, nervures black, stigma with a subhyaline spot, first recurrent 

 nervure coinciding with first transverse-cubital nervure, third submarginal 

 cell broad above, narrowed and rounded beneath, receiving the second re- 

 current nervure near base or at middle, lanceolate cell petiolate, under wing 

 ■with two middle cells; knees, four anterior tibiae, basal half of posterior pair, 

 and base of tarsi more or less, white; extreme apex of abdomen sometiraea 

 dull luteous. Length .23 inch. 



^. — Colored like the 9; flagellum bifurcate, ciliate with short pubescence; 

 legs sometimes dull luteous, with the femora more or less fuscous; abdomen 

 sometimes varied with brown towards the base. Length .23 inch. 



Hah. — Washington Territory, (Morrison). 



Emphytus stramiiieipes. — 9- — Slender, black; clypeus, labrum, 

 mandibles except tips, palpi, collar, upper angles of prothorax, pectus, tegulae, 

 nervures at base of wings, legs entirely, including coxae, and venter, yellowish- 

 white; antennae moderately long, pale beneath towards apex, joints 3 — 6 long, the 

 third longest, 6 — 9 much shorter and subequal ; wings hyaline, iridescent, nerv- 

 ures black, costa and stigma fuscous, the latter pale at base, lanceolate cell with 

 oblique cross-line, under wing without middle cell ; apical middle of abdominal 

 segments above more or less pale, the tips whitish above. Length .26 inch. 

 Hah. — Washington Territory, (Morrison). 



Dolerus tibialis. — %. — Dull black, roughly sculptured, clothed with 

 a short white sericeous pubescence; wings fuliginous, nervures and stigma 

 black; tegulae, tibiae and the four or five basal segments of abdomen honey- 

 yellow; sometimes the posterior tibiae is more or less obfuscated at base and 

 apex. Length .35 inch. 



Hah. — Washington Territory, (Morrison). Allied to aprilis Norton. 



Slacrophya texana. — 9- — ^^1^ black; clypeus, labrum, palpi, upper 

 lateral angles of prothorax, scutellum, tegulae, nost of legs and basal plates, 

 yellow; coxae except tips, apical third of posterior femora and tips of their 

 tibiae, black; antennae thickened towards tips, third joint nearly twice the 

 length of fourth, wings tinged with smoky-yellow, especially towards tip, 

 nervures and stigma fuscous, lanceolate cell with short straight cross-line, 

 third segment of abdomen ferruginous above. Length .35 inch. 



%. — Smaller, more slender; apical half of posterior femora black; wings 

 paler, nearly hyaline, iridescent; abdomen, except basal plates, entirely black. 

 Length .25 inch. 



Hah. — Texas, (Belfrage). Allied to pulchella Klug. 



Urocerus tarsalis. — 9- — Small, black; a large white spot on each side 

 of head behind the eyes; antennae tweuty-one-jointed, apical half yellowish ; 

 vertex and thorax coarsely rugose, anterior angles of prothorax prominent and 

 vertically sharp; wings dusky, darker on apical margin, stained with yellowish; 

 legs slender, except posterior femora which is, as usual, short and robust, tibiae 

 fulvous ; abdomen fulvous, cornus sublanceolate, sides serrate, apex with a blunt 

 spine, sheaths of ovipositor concolorous with abdomen, ovipositor castaneous. 

 Length to tip of cornus, .65 inch, including ovipositor, .85 inch. 

 Hah. — Washington Territory, (Morrison). 



