74 DIPTERA 
Type species : B. spuria, Fallen (Pl. 5, Fig. 46), redescribed by Macquart as nig*a, nov. sp. 
The species of Bicellaria are common in meadowlands during the summer month, especially to the 
North. 
TABLE OF THE SPECIES OF BICELLARIA 
1, Body brownish incolor . . . .i27 45 uar. c x o ac art I T EN 2. 
Ground-color of body and legs black 4 cea NU NEC I v uic. D E d 3. 
2. Legs and halteres yellow . . . B. RUuFA, Meigen. 
Legs and halteres brown ; tines of irbridad ait fork thick et 
Huncde ^. . 5 — du. à ils. c. xcu ac. M;UVENS ODDO S 
3. Hind tibie uniformly Miecder: mesonotum of male velvety black 
and very gibbous ; wings of female hyaline. . . . . . . B.MELxNa, Haliday. 
Hind tibi: more or less thickened toward apex. . . . . xw a. e ar NI UE 4- 
4. Hairs of forward part of notum almost as long as those behind, 
two vitis moreorles indicated |... . . . .« s, 4 9 4 vi 2e ou 5. 
Hairs of forwatd part of mesonotum short, no vitte . . . . . . . « «. -.. »«. 4. 6. 
5. Abdomen dark gray, dullorslightly shining. . . . . . . . B. PrLos4, Lundbeck. 
Abdomen satiny whitish in certainlights . . . . -. . B. ALPINA, Bezzi. 
6. Hind metatarsi not at all thickened, legs rather short, rd hairs 
in postero-dorsal row of bind femora ; pygidial fork narrowly 
U-shaped, tines moderately thick and tipped with a couple of 
müctoscópic hab... . « o5 4. 5 2 0 9 $2 DORMOREAL PRIURE. 
Hind metaterai more orlem thickKened , . . . . . . « «s 3 à. 5» us i: 
7. Basal joints of hind tarsi but slightly thickened. . .. CUSUSTRS RN Eu 8. 
Basal joints of hind tarsi of male distinctly thickened ; abdomisdl 
hairs black or brown ; legs long, eighteen very long hairs on 
antero-dorsal row of hind femora . . . . . . QUITTER QUY Wo 2 os uq NR 
8. Halteres of male and female pale yellow; wings PibluiecQó! hairs 
of legs pale; base of third antennal joint broadly ovate, arista 
nearly as long as the third joint; ventral fork of mm 
Dubaped. . . . ; « B. HALTERALIS, Loew. 
Halteres of male dark, of funde viter deci or pii; arista iu 
muchshorter thatí third antennaljoint . . . . 4. 5 — - o0 9 Ec. 9. 
9. Wings white-hyaline, wide in female ; base of third antennal joint 
brondiyowil ,. . . - 4. o. . 05 s. 7 Wo UK AM DONE OUNBDNEE 
Wings more orles infumated | . . . . . . . » «| 24 205v. uu IM 
(1) Bicellaria uvens, nov. sp. — Male. Length 3 mm. Blackish-brown, third antennal joint with rounded 
base and gradually tapering to apex, heavily pubescent; arísta equal to third joint; occipital hairs black. Thorax 
completely covered with dark brown pollen, bristles black. Abdomen dull, hairs black, pygidium dusted, the ventral 
fork deeply excised with the prongs robust and wider than the excision. Legs normal, hairs black, about eighteen 
in the anterior dorsal row of the hind femora, hind tibie gradually clavate with many outstanding extensor setze, hind 
metatarsi scarcely thicker than other joints. Halteres black, wings heavily infumated, stigma not differentiated. 
Female. Last abdominal segments shining, halteres brown. 
Numerous specimens from Fort Chimo, Ungava Bay, Hudson Straits, near northern Labrador (L. M. Turner), 
type in U. S. National Museum. The specimens appear to have been preserved in liquid which may account for 
the castaneous color of most of the specimens. 
