﻿THE PHILIPPINE 



Journal of Science 



B. Tropical Medicine 



Vol. IX SEPTEMBER, 1914 No. 5 



MALARIA IN THE PHILIPPINE ISLANDS 



I. EXPERIMENTS ON THE TRANSMISSION OF MALARIA WITH ANOPHELES 

 (MYZOMYIA) FEBRIFER SP. NOV., ANOPHELES (PSEUDOMYZOMYIA) 

 ROSSII, ANOPHELES (MYZORHYNCHUS) BARBIROSTRIS, ANOPH- 

 ELES (MYZORHYNCHUS) SINENSIS, AND ANOPHELES 

 (NYSSORHYNCHUS) MACULATUS * 



By Ernest Linwood Walker and Marshall A. Barber 

 {From the Biological Laboratory, Bureau of Science, Manila, P. I.) 



I. INTRODUCTION 



The efficient and economical conduction of an antimalarial 

 campaign in any country must be based not only upon accurate 

 infonnation of the anopheline mosquitoes and their distribution, 

 but also upon the experimental determination of the ability of 

 the different species to transmit malaria. As a practical exam- 

 ple of the importance of this knowledge, it has been estimated ^ 

 that in the sanitation of the Panama Canal Zone between 100,000 

 and 250,000 dollars were saved by the knowledge that a certain 

 anopheline mosquito. Anopheles malefactor, which breeds in the 

 collections of water in hollow stumps, resulting from the ex- 

 tensive deforestation of the country, was unable to transmit 

 malaria. 



Of about 100 species of Anophelinae now kno\vn, probably less 

 than one-third have been definitely proved, either by the dis- 



* Part II of this work, The distribution of the more common anophelines 

 and the distribution of malaria, will appear in an early number of this 

 Journal. • 



'Carter, H. R., Ajn. Jourti. Trop. Dis. & Prevent. Med. (1913) 1, 43. 

 129558 381 



