160 THE CANADIAN ENTOMOLOGIST 
Habitat. — Kansas . 
Holotype. — c/', Jelmore, Hodgeman Co., Kansas, July 18. 
1917 (Alexander). 
Allotype.- — 9 , Larned, Pawnee Co., Kas., Aug. 1, 1917 
(Alexander) . 
Paratypes. — 4 9 s, Icf, with the allotype. 
A review of the species of this genus in the United States will 
be found in the Proceedings of The Academy of Natural Sciences 
of Philadelphia, October, 1916, p. 508-528, Figs. 17-33, wings, 
and 59-91, hypopygial details. The lettering of the appendages 
is explained in that article under the consideration of G. cognatella 
and G. fiorens. 
The majority of these specimens were taken along the Arkansas 
River near Larned; in life the specimens appear very pale and 
teneral as though not fully coloured. The immature stages are 
spent in the moist sand along the river, pupa? being secured from 
which the adults were bred. 
Genus Molophilus Curtis. 
Molophilus perflaveolus, new species. 
Antennae of the male not elongated; general coloration very 
light yellow; male hypopygium with four long, slender, chitiViized 
appendages that are slightly curved toward their tips. 
Male. — Length about 3.5 mm.; wing 5 mm. 
Rostrum and palpi dark brown. Antennic with the beisal 
segments yellowish, flagellar segments brown, oval, slightly elon- 
gated, bearing long verticils that are much longer than the seg- 
ments that bear them. Head reddish yellow, darkest on the disk 
of the vertex. 
Mesonotum light orange-yellow, the interspaces with a whitish 
bloom, on the preescutum bearing numerous long, erect hairs. 
Pleura orange-yellow, sparsely white pruinose. Halteres light 
yellow. Legs with the coxa? and trochanters yellow; femora light 
brown, paler basally; tibia? and tarsi light brown. Wings light 
yellowish; veins yellow with long, pale hairs. Venation some- 
what as in M. flutonensis ; basal deflection of Cm longer than the 
deflection of Mz; Cti\+Mz not twice the length of the deflection. 
Abdominal segments light brown; hypopygium elongated, 
light yellow, the pleural hooks black; abdomen clothed with 
