344 Mr. F. W. Edwards’ Noles on British Mycetophilidae. 
2. Cu, ending in tip of Cu, . : ; : occlusa, sp. Nn. 
Cu, ending in the hind margin reniots from tip of Cu, or 
3. Thorax with three shining blackish stripes; Cu, and Cu, con- 
siderably approximated at their tips. . glabrata, Lw. 
Thorax dull brownish, striped or almost unicolorous; Cu, and 
Cu; very littleapproximated.’. 2» #! Oy .04 Teel GP AL 
4. Wings with two distinct dark spots. .  . bimaculata, Zett. 
Wings not distinctly spotted 
hybrida, Mg.; pseudohybrida, Landr. 
5. Cross-vein M-Cu obliterated by contact of Cu, with M 
tenella, Winn. 
Cross-vein. M-Cu not obliterated . 2. 9. w) .. 6. 
6. Male antennae long, clothed with long hair .  saundersi, Curt. 
Male antennae shorter, clothed with short hair . cinerea, Mg. 
*B. oeclusa, sp. n. 
Fusca ; vena brachiali in costam exeunte : cellula posteriori quinta 
(Cu?) apice occlusa, 
3. Dingy brownish; thorax more ochreous with three dark brown 
stripes. Antennae short haired, shorter than the whole body, with 
the first three joints yellowish. Legs dingy ochreous, tarsi dark, 
trochanters and knees black. Wings transparent, only the stigma 
darker; R,+. ends in the costa close to the tip of R, ; cross-vein M-Cu 
absent as in B. tenella; Cu, terminating in the tip of A. Genitalia, 
fig. 1. Length about 6 mm. 
One male from Brockenhurst, Hants, 22. v. 1910 (Lt.-Col, 
Yerbury). Type in Mr, Collin’s collection. 
*B. bimaculata, Zett. Logie (F.J.); Nethy Bridge (C.G.L.) 
New Forest (D.8.); Stoke Wood, Hereford (J.H.W.); 
Aviemore (J.W.Y.). 
*B. glabrata, Lw. A single ,fneags much damaged, 
from Blythburgh, Suffolk ae iy? Wells, Somerset, 1 ¢ 
(C.G.L.); New Forest, 1 2 (D.S.). The shining thorax 
and distinctive neuration fie its identification certain. 
It seems to be very rare on the Continent. 
B. hybrida, Mg. This is the species generally known as 
B. fusca, Mg. It is not uncommon. 
*B. pseudohybrida, Landrock. Cambridge (F.J., D.S.) 
B. tenella, Winn. Of this rare species I have seen only 
one male in Mr. Collin’s collection and one female from 
Aviemore (J.W.Y.). As in B. hybrida, Mg. and B. 
