THE CANADIAN ENTOMOLOGIST 61 
Type in the collection of the author. 
Related to E. macrophtlialma Loew ( Europe). In our fauna 
closest to E. vespertina O.S. in the enlarged eyes of the male sex 
but differing in the clear, reddish brown coloration of the body, 
lacking the yellow humeral angles to the pnescutum and the bright 
yellow knobs to the halteres. The male hypop>-gia are differentK 
constructed in the two species. 
E. vespertina is an inhabitant of open swamps and meadow- 
lands, while E. megophthalma is characteristic of cool woods and 
boggy, shaded hillsides. I reared this new species from numerous 
larva\ occurring in mud and beaneath rotting leaves, associated 
with other crane-fly larvae (as Dicranomyia stulta, Molophihis 
hirtipennis, Orniosia innocens, Limnophila fiiscovaria, Rhaphido- 
labis flaveola, Tipula oropezoides, T. coUaris, T. cayuga, Bitta- 
comorphella, jonesi, etc.) in the Symplocarpus association on Bools 
Hillside. The larva is curious in the chalky white colour due to 
the contents of the food-canal showing through the skin ; the head- 
capsule and spiracular-disk are very small. 
Tribe Limnophilini . 
Lasiomastix subtenuicornis, sp. n. 
Allied to L. tenuicornis O.S.; antennae of the male elongated; 
apical cells of the wings pubescent; cell Mi of the wings lacking. 
Male. — Length 7 mm.; wing 7.4 mm. 
Female. — Length 8.8-9 mm.; wing 8.8 mm. 
Rostrum and palpi black, the former slightly pruinose. hn- 
tennae of the male elongated, black, the flagellar segments elongate- 
cylindrical with a dense, whitish pubescence. Head light gray. 
Prsescutum brownish gray with three broad, dark brown 
stripes, the median one not attaining the suture; scutum, scutellum 
and postnotum blackish gray pruinose. Pleura dark with a clear, 
blue-gray pruinosity. Halteres yellow, the knobs a little darker. 
Legs with the coxae dull yellowish, the two anterior pairs a little 
pruinose basally on the outer faces; trochanters yellow; femora 
yellow, passing into brown on the outer third; tibiae and tarsi 
dark brown. Wings dusky gray; stigma brownish; veins dark 
brown; a sparse pubescence in the apical cells of the wings. Ven- 
