A Guide to the Literature of British Diptera. 95 
RHYPHIDA. 
No special papers. 
CECIDOMYIID (Gall-Midges). 
As might be expected from the economic importance of these flies there 
is an extensive literature. Space will only allow of a selection of the most 
important papers. | 
The student, at the outset, will find the following paper a useful guide to 
nomenclature :— | 
144. Comin, J. E.: A List of the British Cecidomyiide arranged according 
to the views of recent Authors. Ent. Mo. Mag., xl. pp 93-99 (1904). 
Additions to this List are given in the following :— 
145. Epwarps, F. W.: Two Diptera (Cecidomyiidee) new to Britain. nt. 
Mo. Mag., xviii. pp. 136-137 (1912). 
146. Burkitt, Harotp J.: Additions to the List of British Plant-Galls. 
Entomologist, xlix. pp. 4-8 (1916). 
Of the volumes and papers dealing with Galls, including those made by 
insects of this Family, the most useful are— 
147. Connoup, E. T.: British Vegetable Galls. An Instruction to their 
Study. London, 1901, 4to, xi1+3512 pp., 130 pls. 
148. ConnoLp, E. T.: Plant-Galls of Great Britain. A Nature-study Hand- 
book. London, 1909, xii+ 292 pp. 
149. Swanton, E. W.: British Plant-Galls; a Classified Text-book of 
Cecidology. London, 1912. 
149a. MU.uer, ALBERT: British Gall-Insects. Hntomologist’s Annual, 1872, 
pp. 1-22 (Diptera on pp. 12-17). 
150. Binniz, F. G.: On Dipterous Gall-makersand their Galls. TZrans. Nat. 
Hist. Soc. Glasgow, i. pp. 154-164 (1876). 
151. Fircu, Epwarp A.: British Gall-Gnats. Entomologist, xiii. pp. 146-154 
(1880). | | 
152. Harker, A.: On the Gall-Midges (Cecidomyiide). An Introductory 
Paper. Proc. Cotteswold Nat. F. Club, ix. pp. 220-228 (1890). 
152a. TRAIL, J. W. H.: Galls. Ann. Scot. Nat. Hist., 1897, pp. 171-188. 
158. BAGNALL, R. S., and Harrison, J. W. H.: Records of some new British 
Plant-Galls. I. Diptera (Cecidomyiide). nt. Record, xxviii. p. 51; 
II. Some more Cecidomyiid Galls, éc. pp. 158-159. ILI. New 
Cecidomyiid Galls found during the Summer, t.c. pp. 197-203 (1916) ; 
IV. and V. More new Cecidomyiid Galis, t.c. pp. 247-252 (1916), 
and op. cit. xxix. pp. 12-15 (1917). 
154. Watiacz, HENry S.: A new British Cecidomyiid Gall on Meadow 
Grass. [Mayetiola radierfica, Rubs.| Hnt. Mo. Mag., liu. p, 230 (1916). 
