356 Mr. F. W. Edwards’ Notes on British Mycetophilidae. 
the whole apex of the wing dark. The abdominal markings 
of some specimens of N. pictipennis resemble those of 
N. formosa, but they are variable, especially in the female ; 
one female from the New Forest (D.S.) has a dark apex 
to the wing. It is quite possible that N. formosa may be 
only a variety of N. pictipennis. The new name winnertzi 
is proposed for pictipennis, Winn. (nec Hal.). 
PoLyLepra, Winn. 
P. undulata, Winn. This is the species which is in the 
list as P. splendida. A male specimen taken at Logie, 
9. 1x. 1909, by Mr. Jenkinson, lacks the small cell on both 
wings. This disconcerting variation, in the character on 
which the subfamily Sciophilinae was founded, occurs in 
a number of species. It has been recorded by de Man 
(Tijd. v. Ent. 1884, p. 137) in Polylepta leptogaster, and 
I have also met with it in Empalia vitripennis, Sciophila 
lutea, and S. hirta (see below). 
PaRATINIA, Mik. 
P. sciarina, Mik (7%). This species exhibits remarkable 
variation in size. I have compared mounts of the genitalia 
of a large specimen sent me by Mr. Carter, and a very small 
one in Mr. Jenkinson’s collection and find them identical. 
If Mik’s figure of the palpus is anything like accurate, the 
British species cannot be P. sciarina, and it is certainly 
not P. difficilis, Dz., but I do not like to describe it as 
new. 
Monoctona, Mik. 
This genus, it seems to me, has its nearest ally in Acnemaa, 
the only difference being the absence of the small cell in 
the latter. Both have the apical half of the club of the 
halteres black, which is most unusual in this family. In 
fact, if an abnormal Monoclona without a ‘“ small cell ”’ 
were to occur it could only be distinguished from Acnemia 
by the genitalia, 
M. rufilatera, Wik. Males from Studland (Dorset), 
Sheviock and Lelant, Cornwall (J.W.Y.); Cambridge 
(F.J.), and New Forest (D.S.), agree in having genitalia 
of the exact structure figured by Dziedzicki for M. wni- 
cornuta. In Daziedzicki’s specimen, however, the genitalia 
were yellow, not black (as they are in ours), and the thorax 
