MODELS OF MOSQUITOES 91 



Museum, Cromwell Koad, are models of mos- 

 quitoes twenty-eight times as large (linear 

 measurement) as the original insects, which 

 are placed beside them for comparison for 

 educational purposes. 



The common mosquito (Gulex pipiens) which 

 we frequently see on our window-panes does 

 not transmit the malaria parasite. The spot- 

 winged mosquitoes (Anopheles maculipennis), 

 abundant in England and nearly all parts of 

 the world, are carriers of the malaria parasite. 

 The parasite multiplies not only in the human 

 blood, but in the stomach and tissues of the 

 mosquito. 



Various forms of malaria are distinguished 

 by medical men according to the frequency 

 of the recurrence of fever and other symptoms, 

 as Tertian, Quartan, &c. Each is due to 

 a distinct species of parasite, though the 

 differences are very slight. 



The life-history represented by the models 

 referred to is that of the parasite of the 

 so-called ' pernicious ' or < sestivo-autumnal ' 

 malarial fever. The malaria parasite is an 



