A Guide to the Literature of British Diptera. 91 
Bristles, Hairs, and certain Mouth-glands of Diptera. vol. Bulletin, 
Xxili. pp. 250-270, pl. 1. (1912). 
104. Wescut, W.: The Mouth-parts of the Nemocera and their relation 
to the other Families of Diptera. Journ. hoy. Micr. Soc., 1904, pp. 
28-107, pls. iii-viii. Corrections and Additions, op. cit. 1909, 
pp. 1-16, pls. 1-1v. 
105. Epwarps, F. W.: Ten new British Diptera (Nematocera). Lint. Mo. 
Mag., li. pp. 164-167 (1915). 
SCIARIDA. 
There are no general papers on this Family. The general works of 
Walker (4) and Theobald (5) are here of very little use, and it is necessary 
to consult foreign literature. See also— 
106. Epwarps, F. W.: Sexual Dimorphism in a Species of Sciara. nt. Mo. 
Mag., xlix. pp. 209-211 (1918). 
107. Epwarps, F. W.: A Second British Species of Plastoscoara. Ent. Mo. 
Mag. li. pp. 263-264 (1915). | 
MYcETOPHILIDA (Fungus-Gnats). 
The most helpful memoir on the British species of this Family which has 
yet appeared is— 
108. Epwarps, F. W.: Notes on British Mycetophilide. Trans. Hunt. Soe. 
Lond., 1913, pp. 334-382, pls. xii.-xvili. A very thorough revision of 
the Family. 124 species are added to the list, and 50 names proved 
to be synonyms or wrongly identified. An analytical key is given to 
all the European genera, and in the case of several of the larger genera 
keys are also given for the identification of species. 
Other papers are— 
109. Epwarps, F. W.: Some Mycetophilid Synonymy. <Ann. Mag. Nat. Hist., 
x11. pp. 55-56 (1913). 
110. Jenkinson, F.: Notes on certain Mycetophilide, including several 
Species new to the British List. nt. Mo. Mag., xliv. pp. 129-135, 
151-154 (1908). 
BIBIONID&. 
There is no British paper on this Family. 
The general works of Walker (4), Theobald (5), and Wingate (8) may be 
consulted. 
CHIRONOMIDA (Midges). 
Besides the general works above mentioned there is no British paper on 
