82 THE CANADIAN ENTOMOLOGIST. 
run down to the first group of species, but runs out by its hyaline 
wings with spots. By de Meijere's key (Tijd. voor Ent., vol. 54, 
p. 33, 34) it would run down to L. notata Wulp, a much larger 
insect with entirely different body-coloration. 
Genus Molophilns Curtis. 
1833. Molophilns Curtis; Brit. Ent., p. 444. 
Molophilus sirius, sp. n. (Fig. 11.) 
Body coloration dark brown; hypopygium of the male with two 
pairs of chitinized appendages which are finely denticulate at the tip. 
Male. — Length 3.5 mm.; wing, 5.4 mm. 
Female. — Length 4.8 mm.; Aving, 5.5 mm. 
Rostrum and palpi dark brown. Antenucne broken. Head 
brownish grey, the occiput paler behind. 
Pronotum and anterior margin of the mesonotal praescutum 
pale whitish yellow, remainder of the praescutum brown, the space 
before the pseudosutural fovea^ yellow, the foveae and tuberculate 
pits dark brown; lobes of the scutum dark brown; scutellum and 
postnotum brown. Pleurae brown. Halteres with the knobs very 
large, elongate, stem brown, knobs paler. Legs with the coxae and 
trochanters dull dark yellow, remainder broken. Wings hyaline 
or nearly so, the veins rather pale with abundant long dark brown 
hairs. Venation as in the figure. 
I*"ig. II. — Molophilns siri.ib-. 
Abdomen dark brown, the valves of the ovipositor brownish 
yellow. Male hypopygium with the ventral-lying pleural appen- 
dages fleshy, long, slender and finger-like, clothed with long hairs; 
luiderneath these fleshy lobes are a pair of chitinized hooks, straight 
basall>-, curved ventrad and inward at their tips and on the under 
face with several small teeth. Dorsad of these are a pair of shorter 
chitinized appendages, almost straight, the dorsal face near the tip 
with minute teeth. Dorsal lobes, short, rounded at tip, flat, 
