350 Mr. F. W. Edwards’ Notes on British Mycetophilidae. 
tibiae about one-fifth longer than the metatarsi. Wings with the 
apex dark, and with a dark cloud along Cu,. Tip of Sc immediately 
above base of R,; third costal division scarcely one-third as long 
as fourth; R,+, moderately long, at an angle of 45° with R,+;; 
costa extending nearly half the distance between the tips of R,+, 
and M,+.; anal vein reaching margin. 
2 3. Padstow, Cornwall, Sept. 1903 (C. G. Lamb—type 
in British Museum ; para-type in Cambridge Museum); 1 ¢ 
Studland, Dorset, 11. vii. 1909 (Lt.-Col. Yerbwry), in Mr. 
Collin’s collection. . 
P. mgricauda, Strobl. Crowborough (F.J.); New Forest 
(D.8.); Felden (A.P.); Porthcawl (J.W.Y.). Males only. 
Hypopygium, figs. 10 and 11. 
*P. flava, Meq. This is the species recorded by Verrall 
as P. modesta, Winn. Crowborough (F.J.); New Forest 
(D.S.); Stokenchurch (J.W.Y.); King’s Lynn (H.A.A.). 
The male has a small greyish costal spot at the apex of the 
wing, resembling in this respect P. dorsalis and P. nigriceps. 
Hypopygium, figs. 12 and 13. 
P. modesta, Winn. (=simpler, Grz.). Studland 
(J.W.Y.); Tangham Wood (G.H.V.). I have only seen 
two males of this species, both in Mr. Collin’s collection. 
Hypopygium, figs. 14 and 15. 
P. dorsalis, Staeg. (= mycelophiloides, Wik., = humeralis, 
Winn.). King’s Lynn (E.A.A.); New Forest (D.S.); Nairn 
and Aviemore (J.W.Y.); Studland (J..C.). Hypopygium, 
figs. 16 and 17. 
P. nigriceps, Wik. [have only seen two recent examples, 
a female from Carrow, Norwich (I.J.) and one from 
Aviemore (J.W.Y.). Two of Walker’s original specimens 
are in the British Museum, both females. The Aviemore 
specimen has indications of three darker stripes on the 
thorax. I have rather a strong suspicion that P. nigriceps 
may be only the female of P. dorsalis as the only differ- 
ences seem to be coloration, and equally marked differences 
are known to occur between the sexes of P. mgricornis. 
*P. atriceps, sp. n. 
3: Flava; capite nigro, thorace brunneo-trivittato, tarsis anten- 
narumque flagello fuscis ; alis flavescentibus, vena anali marginem 
attingente. 
Head black; palpi and three basal joints of antennae reddish- 
yellow, rest of antennae dark brown. Thorax yellowish with three 
