AMERICAN HYMENOPTERA. 7 



white or luteous; antennae thickened, slender at tips, three basal joints of 

 flagellum of nearly eqvial length; wings hyaline, nervures blackish, stigma 

 and costal nerve luteous, neuration much as in vicinalis ; legs yellowish-white 

 or luteous, tips of posterior tibiae and their tarsi black ; abdomen a little longer 

 than head and thorax, piceous above, at tip and beneath luteous, the dorsal 

 segments obscurely edged with luteous. Length .20 inch. 

 Hub. — Texas, (Belfrage). 



Nematus inilitaris. — 9- — Shining black; antennae more than half 

 the length of the body, slender, especially at tips, three basal joints of 

 flagellum of nearly equal length; palpi pale; sides of prothorax, mesothorax 

 except most of middle lobe, pleura except narrow space beneath wings, tegulse, 

 legs except tips of posterior tibiae and tbe tarsi more or less, pale ferruginous; 

 wings hyaline, nervures and stigma black, second submarginal cell receiving 

 the first recurrent nervure about one-fifth from the base and the second same 

 distance from the tip, third submarginal not much larger than the first, nearly 

 square ; abdomen elongate, shining, venter rufotestaceous, varied with fuscous. 

 Length .26 inch. 



Hah. — White Mountains, N. H., (Morrison). 



Neinatiis notabilis. — 9- — Large, robust, black; head and thorax with 

 a fine pale sericeous pile; labrum, palpi and tip of posterior angles pale; 

 antennae more than half the length of the body, slender, three basal joints 

 of the flagellum of nearly equal length; wings hyaline, nervures and stigma 

 black, second submarginal cell receiving the first recurrent nervure about 

 one-fourth from the base and the second about one-fifth from the tip, the third 

 submarginal a little more than half the length of the second; legs yellowish, 

 femora pale ferruginous, coxae, tips of posterior femora, apical third of their 

 tibiae and their tarsi, black ; abdomen broad, depressed, ridged down the back, 

 the first four segments yellowish-ferruginous. Length .40 inch. 



Hab. — Massachusetts, (Henshaw). Allied to rvfofasciatus Norton. 



Neinatli!^ latifasciatus.— 9 -^Black, shining; anterior margin of 

 clypeus, labrum, base of mandibles, and palpi, whitish ; antennae three-fourths 

 the length of the body, slender, three basal joints of the flagellum long, of 

 nearlv equal length; posterior angles of prothorax, and tegulae, yellowish; 

 wings hyaline, nervures and stigma black, second submarginal cell receiving 

 the first recurrent nervure one-third from the base and the second one-sixth 

 from the tip, third submarginal about half the length of the second, longer 

 than broad and of nearly equal width; legs yellowish-white, femora tinged 

 with fulvous, base of posterior coxae above, tips of their femora, apical half of 

 their tibiae, their tarsi entirely, and tips of four anterior tarsi, black; abdomen 

 oblong-ovate, subdepressed, ridged down the back, four basal segments yel- 

 lowish-fulvous. Length .30 inch. 



Hab. — White Mountains, N. H., (Morrison). Closely resembles 

 notabi/is, but smaller, with longer and more slender antennae, pale 

 coxae, etc. 



Nematus Edwardsii. — 9* — Piceous; spot on middle of face, clypeus, 

 labrum, mandibles except tips, palpi, legs and abdomen yellowish-testaceous; 

 antennae slender, black, nearly as long as the body, the three basal joints of 



