THE CANADIAN ENTOMOLOGIST 209 



hyaline; stigma small, brown; Sc long, basal deflection of Cu, before midlength 

 of cell 1st M2; abdominal tergites dark brown, sternites light yellow. 



Male.- — Length (excluding rostrum) 6 — 6.4 mm.; wing 5.8 — 6 mm.; 

 rostrum alone about 3 mm. . » 



Female. — Length (excluding rostrum) 7.5 — 7.8 mm.; wing 6.5 mm.; 

 rostrum alone about 3.5 mm. 



Described from alcohohc specimens. 



Rostrum elongate, dark brown; palpi dark brown. Antennae dark 

 brownish black. Head dark, grayish pruinose. 



Pronotum dark brown. Mesonotum shiny black, the humeral regions 

 of the praescutum paler; in dried specimens the lateral margins of the prae- 

 scutum may be slightly pruinose. Pleura obscure yellow- Halteres pale yellow- 

 ish white. Legs with the coxae and trochanters yellow ; remainder of the legs 

 broken. Wings nearly hyaline ; stigma small, brown ; veins dark brown. Vena- 

 tion : a supernumerary crossvein in cell Sc ; Sc long, Sc , extending to just before 

 the end of Rs, Sc^a short distance from the tip of Sc, , the latter about equal to 

 m ; Rs comparatively short, straight, about twice the deflection of R^^g ; inner 

 end of cell 1st IV,^ slightly arcuated ; outer deflection of M3 a little longer 

 than m ; basal deflection of Cu, before midlength of cell 1st M^ , much longer 

 than Cu^ alone. 



Abdominal tergites dark brown, especially in the female ; sternites light 

 yellow. 



Habitat. — North Queensland. 



Holotype, ^ , Babinda, August 7. 1920 (J. F. Illingworth); 



Allotopotypc, $ . 



Paratopotypes, 4 J* $ . 



Genus Molophilus, Curtis. 

 Molophilus unispinosus, sp. n. 



General coloration sulphur-yellow ; vertex with a brown spot ; mesonotum 

 light chestnut ; male hypopygium with three pleural appendages on either side, 

 the longest a cylindrical curved arm with the apex enlarged and provided with a 

 powerful blackened spine, surrounded by numerous yellow hairs. 



Male. — Length about 3.5 mm. ; wing about 3.7 mm. 



Described from an alcoholic specimen. 



Rostrum and palpi brown. Antennal scape light sulphur-yellow, the 

 flagellum broken. Head sulphur-yellow above with a conspicuous circular dark 

 brown spot on the vertex; genae slightly infuscated. 



Mesonotum with the praescutum light chestnut, the lateral margins dark 

 brown ; scutal lobes similar, the posterior lateral angles slightly produced laterad, 

 light yellow ; scutellum chestnut yellow ; postnotum obscure yellow. Pleura 

 brownish yellow, the dorso-pleural region light sulphur-yellow. Halteres pale, 

 the knobs light sulphur-yellow. Legs with the coxae and trochanters pale brown- 

 ish yellow ; remainder of the legs broken. Wings greyish yellow, the veins 

 yellowish. 



Abdomen brownish yellow, the lateral margins of the tergites paler. Male 

 hypopygium with three pleural appendages on either side, the longest a cylindri- 

 cal curved arm that is expanded into a collar at the end, armed with a single 



