XXXli, '21] ENTOMOLOGICAL NEWS 73 



closed, about as long as vein jl/3 beyond it ; basal deflection of Cul 

 beyond the fork of M, equal to or longer than Cu2 alone. 



Abdominal tergites dark brown; sternites paler; hypopygium obscure 

 reddish yellow. 



Holotypc: $, Ciudad, Province of Jujuy, May 23, 1920 

 (V. Weiser). Paratopotypcs: 2 $ 's, May 22-23, 1920. 



Geranomyia subscrotina is closely related to G. serotinu 

 Alex. (Argentina: Sierra Cordoba)' from which it is readilv 

 told by the different coloration of the niesonotum (there bein". 

 three distinct dark stripes) and the much shorter subcosta. 



Gonomyia (Gonomyella) maesta sp. n. 



Antennae dark brown; mesonotum black, grayish brown pruinose; 

 pleura with a conspicuous whitish yellow longitudinal stripe ; wings 

 with a brownish tinge ; Sc moderately long ; male hypopygium with 

 three pleural appendages, the longest of which is slender, near mid- 

 length dilated into a collar-like structure, one side of which is slightly 

 produced into a spine ; penis-guard with the apex simple. 



$ . Length about 4.5 mm. ; wing 5.2 mm. $ . Length about 5.5 

 mm. ; wing 5.4 mm. 



Rostrum and palpi dark brown. Antennae dark brown with a 

 sparse yellowish pubescence ; flagellar segments in the male cylind- 

 rical, in the female oval. Head gray. 



Pronotum dark gray pruinose, the scutellum obscure yellow. 

 Mesonotum black, sparsely grayish brown pruinose ; pseudosutural 

 foveae conspicuous, elongate, shiny black. Pleura black, sparsely gray 

 pruinose ; a conspicuous obscure whitish yellow longitudinal stripe 

 extending from behind the fore coxae to near the hind coxae ; a pale 

 yellow spot on the mesepimeron in front of the base of the halteres. 

 Halteres brown. 



Legs with the coxae blackish, paler apically ; trochanters dark brown ; 

 remainder of the legs brownish black, the bases of the femora paler. 



Wings with a strong brownish tinge ; stigma oval, darker brown ; 

 veins almost black. Venation: Sc moderately long, Scl ending about 

 opposite midlength of Rs; Rs long, gently arcuated; R2+3 shorter 

 than R2; r obliterated or approximately so; basal deflection of R4-\-5 

 longer than r-m; basal deflection of Cul at the fork of M. 



Abdomen dark brownish black. Male hypopygium with the outer 

 lateral angle produced into a short spine ; three pleural appendages, the 

 longest a cylindrical chitinizcd rod, the basal half stout, at about mid- 

 length dilated into an irregular collar, the lower angle produced into ;i 

 sharp spine, the face of which is setigerous ; the distal half of this 

 appendage is slender; intermediate appendage fleshy, the surface 

 covered with numerous short sensory setae; outer appendage slightly 

 curved, gradually narrowed to the subacute blackened apex. I'enis- 

 guard with the tip simple. 



