﻿CERTAIN CHARACTERS OF ANOPHELES LARVAE, &C. 391 



their specific differentiation. So far, only the anterior and posterior clypeal and 

 the palmate hairs have been studied in detail, and it is hoped that further study 

 will reveal points of difference which will enable one to recognise the mature 

 forms of all valid species. It may well be that the distinctive characters which 

 may be observed in these developmental stages will form the basis for a more 

 satisfactory grouping of adult Anopheles than that which has been founded upon 

 scale characters alone. 



The drawings accompanying this paper were executed by Col. A. Aleoek, 

 C.I.E., F.R.S., to whom I am under obligation for this and other valued advice 

 and assistance in the preparation of these notes. 



References. 



1. Grassi, B. (1900). Studi di uno zoologo sulla malaria. Rend. R. Accad. d. 



Lincei. Anno CCXC'VX Mem. della Classe di Sci. fis., mat e. nat. 

 vol. III. 



2. James, S. P. (1902). Malaria in India. Scientific memoirs, no. 2. 



3. Christophers, S. R. (1906). On the importance of larval characters in the 



classification of mosquitoes. Scientific Memoirs, no. 25. 



4. James and Liston (1911). The Anopheline Mosquitoes of India, 2nd edition. 



27226 



