1921] NATURAL SCIENCES OF PHILADELPHIA. 49 



cord, tip of Sc and origin of Es, broader and more diffuse posteriorly; 

 wing-tip and a faint seam along the outer end of cell 1st Mi faintly 

 darkened; veins yellow, brown on the infuscated areas. Venation: 

 Sc long, Sci extending to about opposite two-thirds the length of 

 Rs, Sc2 at the tip of Sci; Rs rather short, angulated and slightly 

 spurred at origin, inner end of cell 1st Mi and m slightly arcuated; 

 basal deflection of Cui just beyond the fork of M. Abdominal 

 segments with the basal half of each dark brown, the apical half 

 yellowish. Ovipositor with the tergal valves slender, strongly up- 

 curved, the tips acute; sternal valves long, terete, tapering gradually 

 to the subacute apices. 



Habitat. — Peru. 



Holotype, 9 , Napo River, June 15, 1920 (H. S. Parish). 



Dicranomyia eiseni (Alexander) 



1912. Furcomyia eiseni Alexander, Can. Ent., vol. 44, pp. 33S, 339. 



Igarape Assu, Brazil, July 14, 1919 (H. S. Parish). 

 Manaos, Brazil, November 4, 1919 (H. S. Parish). 



Dicranomyia amazonica Alexander. 



1920. Dicranomyia amazonica Alexander, Journ. N. Y. Ent. Soc, vol. 2S, 

 pp. 2, 3. 



Igarape Assii, Brazil, July 16, 1919 (H. S. Parish) ; Type. 

 Obidos", Brazil, September 10, 1919 (H. S. Parish). 



Dicranomyia egae sp. n. Plate IV, fig. 10. 



Antennae brownish black, flagellar segments cylindrical, short- 

 petiolate; mesonotal praescutum brownish yellow with a very broad 

 shiny black stripe; legs dark brown, the bases of the femora yellow- 

 ish; wdngs brownish gray; Sc long; abdomen dark brown; male 

 hypopygium highly complicated in structure. 



Male. — Length 6.4 mm.; wdng 6 mm. 

 Female. — Length 6.8 mm.; wing 6.4 mm. 



Rostrum and palpi brow^nish black. Antennae bro-uiiish black 

 throughout; flagellar segments oval to cylindrical, each with a short 

 basal petiole. Head dark brown. Pronotum yellowish, black medi- 

 ally. Mesonotal praescutum brownish yellow with a single, very 

 broad shiny black stripe that widens out strongly behind, suffusing 

 the scutal lobes; extreme lateral margin of the praescutun with a 

 brownish spot; median area of the scutum yelloAvish; scutellum 

 dark brown, narrow'ly margined caudally with pale; postnotum 

 dark brown. Pleura obscure yellow, the mesepisternum largely dark 

 brown. Mesosternum brownish. Halteres yellow, the knobs dark 

 brow^n. Legs with the coxae and trochanters light yellow; remainder 

 of the legs dark brown, the femoral bases yellowish, narrowest on 

 the fore legs, broadest on the posterior legs; claws slender with no 

 teeth except at the base. Wings brownish gray, the costal region 

 and the apex indistinctly darkened; stigma slightly darker brown. 



