82 Proceedings of the Royal Physical Society. 
A fuller work of this nature, and the latest general work pt in 
this country, is— 
10. Pearce, E. K.: Typical Flies. A Photographic Atlas of Diptera, in- 
cluding Aphaniptera. Cambridge, 1915. 
In this atlas over 150 photographs are reproduced of iva repre- 
sentatives of the various Families, and although the details of structure are 
not as a rule evident in the illustrations, yet the general appearance of the 
insects is fairly well brought out, ml the book should prove a material aid 
to the beginner. 
In the following general works on Entomology much useful information 
will be found on the special Order of Insects with which we are here 
concerned :— 
11. Westwoop, J. O.: Introduction to the Modern Classification of Insects. 
2 vols. London, 1839-40. Diptera in vol. ii. pp. 495 - 587, 
figs. 124-133. 
12. SuHarp, Davin: The Cambridge Natural History. Vol. vi. London, 
1899. Insects, Part 11. Diptera on pp. 438-522, figs. 212-249. 
The following papers dealing with British Flies in general are arranged 
chronologically, and may be consulted with more or less advantage by the 
student :— 
13. WaILES, GxO.: The Characters of the European Diptera from Meigen’s 
Systematische Beschreibung.  Loudon’s Mag. Nat. HMist., vol. v. 
pp. 156-162 (1832). 
14. WALKER, Francis: Notes on Diptera. nt. Mag., vol. iil. pp. 178-182 
(1836) ; vol. iv. pp. 113-117, 226-230 (1837). 
15. Hatipay, A. H.: Notes, etc, upon Diptera. nt. Mag., vol. iv. 
pp. 147-152 (1837). 
16. Duncan, JAMES: Characters and Descriptions of the Dipterous Insects 
indigenous to Britain. Jag. Zool. Bot., vol. i. pp. 145-167, 359-368, 
453-459 (1857); vol. ii. pp. 205-222 (1838). In this paper only the 
Stratiomyide, Tabanidz, Bombyliide and Conopide were dealt with, 
but in these Families most of the genera were illustrated by carefully 
drawn woodcuts, and many localities for the species given, all those 
recorded from Scotland being distinguished by a small s after the 
specific name. 
17. VERRALL, G. H.: Notes on the Dien in the Bato Club 
Collection. Hntomologist, vol. v. pp. 21-25 (1870-71). 
