CHARLES P. ALEXANDER 17 



A male and a female from Alaousi, Ecuador, altitude 9450 feet, 

 Jmie 18, 1914; one male and one female from Huigra, Ecuador, 

 altitude 4500 feet, June 13 to 16, 1914; collected by Parish. 



The genitalia of the male differs somewhat from the descrip- 

 tion of the typical Costa Rican specimens, Init I do not think 

 at this time that the material represents a distinct species. 

 These differences are: the two chitinous points at the tip of the 

 recurved ventral gonapophyse are longer; the fleshy lobe near 

 the middle of the intermediate apical appendage is not tooth-like 

 or conical as in typical recurvata, but is truncated at the apex 

 which bears two large hairs. 



Gonomyia (Leiponeura) near alexanderi Johnson 



1912. Elliptera alexanderi Johnson, Psyche, xbc, p. 3, fig. 6. 



Abundantly represented in the collection from Lima, Peru, 

 altitude 500 feet, collected by Parish; both sexes are represented 

 in the material which is dated from August 4 to August 21, 1914. 

 This fly probably represents a new species closely related to 

 alexanderi. 



Subgenus Gonomyia Aleigen 

 Gonomyia (Gonomyia) jejuna sp. n. 



Basal segments of the antennae yellow; a conspicuous dark brown i)leural 

 stripe; wings with cell 1st Mo open. 



Male. — Length, 3.8 to 4 mm.; wing, 5 to 5.3 mm. 



Female. — Length, 4.4 to 4.6 mm.; wing, 5.5 to 5.7 mm. 



Rostrum and palpi very dark brown. Antennae rather long and slender, 

 in the male if bent backward, extending beyond the wing-root, the scapal 

 segments orange-yellow, flagellar segments oval, dark brown with a rather 

 dense silvery pubescence. Head light yellow with darker markings on the 

 vertex. 



Thoracic praescutum brown with a sparse yellowish l)rown bloom, the sder- 

 ite darker in front but without distinct stripes; scutellum and postnotum 

 darker, plumbeous. Pleura pale yellowish white with a broad dark brown 

 stripe from the sides of the pronotum to the base of the halteres. Halteres 

 brown, the knobs darker. Legs dull yellowish, the femora, tibiae and tarsi 

 more brown. Wings nearly hyaline, the veins brown. Venation: (see plate 

 I, fig. 8) Sc short ending far before the origin of Rs; Rir.^ shorter than 7?3 alone; 

 Rs in a Une with JS4+5, the defle(;tion of the latter being obhterated; cell 1st Ah 

 open due to the atrophy of the outer deflection of Mr, basal deflection of Cui 

 at the fork of M. 



Al)doniinal tergites dark brown, the basal sternites paler, more yellowish. 

 Hypopygium (see plate IV, fig. 1) witli the pleura (a) rather short and stout, 

 cylindrical, the inner dorsal angle with a fleshy lobe jirojecting dorsad and in- 



TRANS. AM. ENT. SOC, XLII. 



