neio or Uttle-hiown Tipulidee. 311 



Hab. Mascarene Islands. 



Holotype, (^ , Reunion {Sikora). 



Type in the collection of the Vienna Museum. 



Gonumyia [Leiponeura) mascarena, sp. n. 



General coloration brown, the pleura plumbeous, striped 

 lontjitudinally with pale yellow ; posterior femora yellow 

 with two brown subterminal rings ; wings clouded with 

 pale brown and whitish subhyaline ; small brown spots and 

 seams along the cord ; Sci ending opposite the origin of Rs ; 

 cell \st M2 closed ; abdomen dark brown, the caudal margin 

 of the segments conspicuously white. 



Female. — Length about 5 mm. ; wing 4"8 mm. 



Rostrum and palpi dark brown. Anteunse brown, the 

 second scapal segment obscure yellow apically. Head pale 

 whitish, the vertex darker medially. 



Pronotum white. Mesonotal prsescutum light brown with 

 three confluent darker brown stripes ; scutum brown, the 

 proximal margin o£ each lobe obscure yellow ; scutellum 

 obscure yellowish, darker basally ; postnotum obscure 

 yellow, darker posteriorly. Pleura plumbeous; a conspicuous 

 pale yellow longitudinal stripe extending from behind the 

 fore coxse to the base of the abdomen ; dorsal-pleural 

 membrane light brown. Halteres whitish, the knobs slightly 

 darkened. Legs with the coxae and trochanters yellowish ; 

 only one hind leg remains, femora obscure yellow with a 

 broad brown subterminal ring with a narrow and less 

 distinct brown ring before this at about three-fourths the 

 length of the segment, the yellow ring enclosed, narrow ; 

 tibiae and metatarsi yellow, the tips narrowly infuscated ; 

 remainder of the tarsi dark brown. Wings with a faint 

 brownish tinge, variegated with whitish subhyaline and 

 brown; stigma oval, grey; small brown spots beneath 

 arculus ; at tip of Scx and origin of Rs -, along cord and 

 outer end of cell \st M2 and at tip of i?2+3 '■> costal margin 

 of wing indistinctly whitisli subhyaline, this including cells 

 C, Sc, and Ei ; vague sul)hyaline areas at the wing-tip, in 

 cell 1st M2, and at the end of vein 1st A; veins dark brown. 

 Venation : Sci ending op| osite origin of Rs, Sc2 close to tip 

 of Sci ; Rs long, angulated and spurred at origin, only a 

 little shorter than i?24.3 ; basal deflection of Ri^o ^ little 

 longer than r-m; cell l*^ Mo closed; m longer than the 



