[82 



SOME Sol 111 INDIAN INSECTS, ETC. [CHAP. XX. 



Here it maj be as well to point out that there is a definite rela- 

 tionship between the malarial parasites and (a) the transmitting 

 mosquito and (/») the human host and that in each of these the 

 parasite passes through a distinct portion ol its development. 

 !\ speaking, a malarial parasite in the human body occurs as a 

 pale amoeboid organism in the red blood corpuscles, at whose 

 expense it grows and which it destroys and then sporulates, or 

 breaks up into many spores or little organisms (merozoites) which 

 are liberated in the blood, where they maj be destroyed by the 

 white corpuscles (leucocytes) or may invade other red corpuscles 

 and ilex el op .is before, destroying the red corpuscles and producing 

 the pallid (anaemic) condition seen in sufferers from malaria. Besi- 

 des the asexual mero/.oites. sexual forms of the parasite are produced 



Vx\ ' I . S T* m ^ ' 



^ )) f \\ 'Stcmwh of tk 



' .'Jlc^ui'Swken i t 



I : '< ■ I 



alter some time and may be sucked up with the blood into the 

 stomach of a mosquito which now bites the malarial patient. After 

 fertilisation, the female cell penetrates the wall ol the stomach "I 



isquito I '' ; ting i elj or cj si (001 s si > whii h 



ind dividi ultimately into pindli I iped motile organisms 



