Vol. xxiii] 



ENTOMOLOGICAL NEWS 



419 



brown band running across the pleurae just over the bases of the coxae; 

 it is only about one-third as wide as the broad pale band separating 

 the two dark pleural stripes. Halteres, basal half of the stem brown; 

 remainder, including the knob, light yellow. Legs : coxae white ; tro- 

 chanters and femora dark brownish-black, the extreme apices of the 

 latter white; tibiae and tarsi dark brownish-black; the tarsi rather 

 lighter. 



Wings clear bluish-hyaline; veins light brown, C. and So. more yel- 

 lowish; stigma large, rounded oval, dark brown; components of the 

 cord and the outer end of cell ist M' black, the membrane adjoining 

 suffused with darker. All of the longitudinal veins are faintly mar- 

 gined with very pale brown. Venation as in pleuralis. (See fig. i.) 



Abdomen. — Tergum. light yellowish, especially bright on the lateral 

 margins of the sclerites ; apices of the sclerites dark brownish-black; 

 sternum dull yellow, apices and lateral margins of the sclerites brown 

 Hypopygium (see fig. 2), described below, in key. 



Holotype, male, Igarape-assu, Para, Brazil: February i, 

 ^ 1912 (H. S. Parish). 



Allotype, female, Igarape-assu, 

 Para. Brazil: February 7, 1912 

 (H. S. Parish). 



Paratype, 18 females, 2 males, 

 Igarape-assu. Para, Brazil : Jan- 

 uary 25 to February 7, 19 12 (H. 

 S. Parish). 



Types in Cornell University, 

 except 5 female paratypes in au- 

 thor's collection and two in Coll. 

 U. S. National Aluseum. Two 

 females, in poor condition, are 

 referred to this new species. 

 They are from Paramaribo, 

 Dutch Guiana (H. Polah, Coll.), 

 and are in the U. S. Nat. Mu- 

 seum. 



The following comparison will 

 point out the differences between the species: 



Hypopygium of Gonomyia (Leipo- 

 neura) amazona n. sp. \'entral aspect. 

 a, pleural pieces ; b. dorsal apical appen- 

 dage ; c, ventral apical appendage ; d, 

 intermediate apical appendage; e. dor- 

 sal gonapophyse ; _/", ventral gonapop- 

 hyse ; g, guard o£ the penis. 



pleuralis Will. (Antilles). 



Trochanter and femur light yellow, femur light yellowish, sub- 

 apically brown, tip light yellow. Lower pleural stripe broad, more 

 than one-half as wide as the pale one above it. Pleural stripe very 

 dark brown, clear cut. ^^'ings with uniform veins ; cord not seamed 

 with darker. Base of flagellum dark. Hypopygium: (See figs. 3, 4.) 

 the eighth sternite convex; ninth sternite with each of the lateral 



