72 ENTOMOLOGICAL NEWS [March, '20 



dage is a curved, heavily chitinized arm whose apex terminates in two 

 powerful, slightly divergent points or teeth and which bears a cylindrical 

 arm near midlength, this latter with several long setae. 



Holotype: 0^, Igarape-Assu, June 25, 1919 (H. S. Parish). 

 Gnophoniyia bisecta sp. n. 



General coloration reddish brown, the mesonotal praescutum with a 

 single median brown stripe; pleura with an interrupted dorsal band, most 

 noticeable as a velvety black spot on the sides of the postnotum and another 

 on the episternum; wings with a single dark brown band along the cord; 

 vein Ri very short as in the hirsuta group; Sci ending nearly opposite r; 

 r at midlength of R2+3: basal deflection of Cih at midlength of cell ist Mo. 



9- — Length 6 mm.; wing 5.4 mm. Rostrum obscure yellowish; palpi 

 dark brown. Antennae with the scapal segfnents brownish yellow; the 

 flagellar segments dark brown. Head brownish ye'low; eyes large. 



Mesonotal praescutum reddish brown with a narrow, dark brown median 

 stripe, indistinct anteriorly, this stripe very indistinctly split by a pale 

 line; scutum similar, each lobe with a small dark brown spot; scutellum 

 and postnotum pale brownish yellow, the latter with two rounded dark 

 brown spots at the posterior margin. Pleura reddish brown with a broad 

 interrupted dorsal stripe, appearing as a large deep black spot on the mes- 

 episternum and another larger black area occupying the lateral sclerites 

 of the postnotum dorsad of the base of the halteres; on the propleura and 

 on the mesopleural epimera this band is paler, brown. 



Halteres obscure yellow, the knobs dark brown. Legs with the coxae, 

 trochanters and femora yellow; tibiae brownish yellow with the tips a little 

 darkened; tarsi brown, the distal segments black. Legs short and hairy 

 as in this group of species. 



Wings subhyaline with a single, narrow, dark brown band along the 

 cord, beginning at the costal margin, ending at the fork of M; wing-apex 

 very slightly darker than the rest of the membrane; veins brownish b'ack, 

 those at the wing-base and in the costal region paler. 



Venation: Sc rather long, Sci ending just beyond r; Sc^ far from the tip 

 of Sci, the latter vein alone being about three-quarters the length of Rs; 

 Rs long, gently arcuated; R-i+3 short, bisected by r which is nearlj^ twice 

 its length from the tip of Ru R2 short and almost straight, as in the hirsuta 

 group, shorter, than cell ist Mo; vein Rz very long, deflected toward the 

 wing-tip so that cell R2 is by far the broadest of all the cells at the margin; 

 inner ends of cells Rz and ist Mo far proximad of R^; cell ist Mi closed, the 

 inner end somewhat narrowed; basal deflection of Ciii at midlength of 

 cell ist Mo. 



Abdominal tergites dark brown, the basal segments a little paler medially, 

 ventral surface lighter brown; genital segment and ovipositor obscure yel- 

 low, the valves of the latter horn-colored; tips broken in the unique type. 

 The abdomen of the type is filled with large eggs. 



