Z E. T. CRESSON. 



yellowish-white; antennse six-jointed, the last two forming a club, the terminal 

 joint sometimes tinged with ferruginous; raesothorax feebly punctured ; wings 

 yellowish-hyaline, varied vvith yellowish-fuscous; tips of tarsi sometimes fer- 

 ruginous ; abdomen bronze-green, clothed with a very short pale sericeous pile, 

 basal margin of the segtnents when bent down or distended bluish-black and 

 glabrous; basal plates with prominent median carina; ventral segments some- 

 times narrowly margined at tip vvith whitish. Length .35 — .50 inch. 

 Mab. — California, (Henry Edwards). 



SERICOCERA Brulle'. 



Sericocera Eil wardsii. — 9 .—Large, robust, honey-yellow, raesothorax 

 and seutellum darker; head, antennae, tips of femora, and tibiae and tarsi 

 entirely, black; mandibles palish at base; wings pale fuliginous, a narrow 

 band beneath stigma and base blackish, the intermediate cells hyaline, stigma 

 and veins black; body short and broad, triangular impression on raesothorax 

 deep, the middle lobe with a medial impressed line; head narrower than thorax, 

 transversely subcompressed. Length .30 inch. 



%. — Colored like the 9 > liead broader and abdomen smaller; antennae two- 

 thirds the length of body, third joint bifurcate, curved, slender, tapering at 

 tip, densely ciliate; wings dark fuliginous, base one-half to one-third hyaline. 

 Length .30 inch. 



Hah. — Mazatlan, Mexico, (Henry Edwards). This is the largest 

 and finest species yet discovered in North America, and is distin- 

 guished from those already known (all from Mexico), by the thorax 

 and abdomen being entirely yellow. 



SCHIZOCER.4 Latr. 

 Schizocera Krugii.— 'J, .— Short, robust, black ; head short, very trans- 

 verse, eyes prominent; antennae slender, flagellura bifurcate, ciliated beneath 

 with blackish pubescence; prothorax, pleura, anterior margin of lobes of raeso- 

 thorax, coxae and venter reddish-yellow; wings subhyaline, nervures and 

 stigma black, three submarginal cells, the second quadrangular, longer than 

 broad, receiving the second recurrent nervure near the base, under wing 

 with two middle cells; four anterior legs more or less pale in front. Length 

 .23 inch. 



Hah.— Vovto Rico, (F. Krug). 



Schizocera bruniiiventris.-- 9. —Shining black, sides of prothorax, 

 tegulae and abdomen yellowish-brown, the latter paler towards apex; head 

 short, very transverse, eyes prominent; antennae about as long as width of 

 head, flagellura flattened, subfusiform; wings fusco-hyaline, nervures and 

 stigma black, third submarginal cell narrowed below, the outer nervure 

 rounded; knees, tibiae except tips of posterior pair, and base of tarsi more or 

 less, dull whitish. Length .22 inch. 



■£.— The bifurcate flagellura robust, flattened, ciliated with short pubes- 

 cence; abdomen fuscous above, blackish at base, venter yellowish-brown. 

 Length .20 inch. 



Hab. — Nevada, (Morrison). The head of this and the preceding 

 species is very transverse, with prominent eyes. 



