32 BRITISH MUSEUM (NATURAL HISTORY), 



Instructions for Collectors — continued. 



No. 3. — Reptiles, BatracMans, and Fishes. [Third 

 Edition.] Pp. 12. 1903, 8vo. M. 



No. 4.— Insects. Fifth Edition. Pp. 11. Text illust. 

 1911, 8vo. 3^. 



No. 5. — Diptera (Two-winged Flies). Third Edition. 

 Pp. 16. Text illust. 1908, 8vo. M. 



No. 6.— Mosquitoes (Culicidse). [Third Edition.] Pp. 8. 

 1 Plate, 1 figure in text. 1904, 8vo. del 



No. 7. — Blood-sucking Flies, Ticks, &c. By E. E. Austen. 

 Third Edition. Pp. 24 : 13 figures in text. 1907, 8vo. dd. 



No. 8, — Spiders, Centipedes, &c. Second Edition. Pp. 4. 

 1906, 8vo. 3d 



No. 9. — Soft-bodied and other Invertebrate Animals ; Shells 

 of Molluscs. Third Edition. Pp. 18. 1909, 8vo. 3d 



No. 10. — Plants. Fourth Edition. Pp. 10 : 3 figures in text. 

 1909, 8vo. M. 



No. 11. — Fossils and Minerals. Fourth Edition. Pp. 8. 

 1913, 8vo. M. 



Economic Series. 



No. 1. — The House-Fly as a Danger to Health, Its Life- 

 history, and how to deal with it. By Ernest E. Austen. 

 Second Edition. Pp. 12 : 2 plates (containing 4 figures), 

 and 3 figures in text. 1913, 8vo. Id. 



British Museum (Natural History), 

 Cromwell Road, 

 London, S.W. 

 November, 1913. 



4 



