Dec. 1899.] Coquillett: On North Ameri an Trypetid/E. 263 



this and the preceding land is in the form of a broad triangle ; the last band borders 

 the wing from near the stigma to beyond apex of the fourth vein, and is narrowly 

 separated from the costa at least between apices of the second and third veins ; third 

 vein bare, small crossvein near the fourth fifth of the discal cell ; length, 3 to 5 mm. 



Habitat : Bristol, R. I. (Burgess); Va. (T. Pergande); Ga. (Mor- 

 rison); Kirkwood, Mo. (Miss M. E. Murtfeldt), and Baldwin, Kan. 

 (C. S. Parmenter). Six males and seven females. Type No. 4402, 

 U. S. National Museum. 

 Aciura opaca, sp. nov. 



Head and its members yellow, center of occiput grayish black, hairs and bristles 

 of entire insect yellow ; body black, the thorax and scutellum opaque, densely grayish 

 pruinose, scutellum bearing only two bristles ; ovipositor somewhat flattened, only 

 slightly longer than the preceding abdominal segment ; legs yellow, the femora except 

 the apices blackish brown ; wings at base nearly to base of discal cell hyaline, the 

 remainder brown and hyaline ; an elongate hyaline spot in first basal cell just beyond 

 its middle, a hyaline band extends from costa nearly midway between apices of first 

 and second veins and almost reaches the fifth vein, passing between the small and 

 hind crossveins ; an oblique hyaline spot in last third of first posterior cell almost in 

 contact with a smaller one below the fourth vein ; a triangular hyaline spot almost 

 crossing the second posterior cell near its base, finally a large hyaline spot in middle 

 of third posterior cell, communicating along the wing-margin with one in the axillary 

 cell which in turn is in contact with the hyaline at base of wing ; third vein bare, 

 small crossvein noticeably beyond middle of discal cell ; length, 4 mm. 



Habitat : Elko, Nev. A single female specimen. Type No. 4403, 

 U. S. National Museum. 



Aciura limata, sp. nov. 



Reddish yellow, the abdomen and bristles black ; body polished, scutellum bear- 

 ing four bristles, ovipositor convex, about as long as the preceding abdominal seg- 

 ment ; wings brown and hyaline, the base yellowish ; a large hyaline spot near 

 middle of costal cell, a sub-triangular one just beyond apex of first vein, reaching the 

 third vein a short distance before the small crossvein, another a short distance beyond 

 it, extending nearly halfway across the first posterior cell a short distance beyond the 

 small crossvein, one at apex of fourth vein extending almost to second vein a short 

 distance before its apex, one near middle of second posterior cell extending from the 

 wing-margin across the first posterior cell almost parallel with the preceding spot, a 

 small spot in discal cell on the fifth vein a short distance from the hind crossvein, a 

 large one in third posterior cell beginning at tip of sixth vein and extending, attenu- 

 ated and interrupted, obliquely to the one in the costal cell ; axillary cell hyaline ; 

 third vein bare, small crossvein noticeably beyond middle of discal cell ; length, 

 4.5 mm. 



Habitat : New Bedford, Mass. 



A single female specimen collected by Dr. Garry De N. Hough. 

 Type No. 4404, U. S. Nat. Museum. 



