Q|0JO |0|O|0|o|o|O|O|O [O/Qlo) 



o]o|o|o|olo|o|o|»lo|u|o|o I 



FIG. 3. — FORMATION OF THE BLASTS OF H^MOMENAS PR^ECOX 

 (ROSS) WITHIN THE BODY OF 1 HE MOSQUITO ANOPHELES. 

 MAGNIFIED 2,000 TIMES. AFTER ROSS AND FIELDING-OULD. 



No. I, The full-grown zygote dividing up into meres ; No. 2, an isolated 

 mere which has developed its filiform bodies or blasts; No. 3, the 

 zygote crammed with blasts is bursting ; No. 4, the blasts are making 

 their way into the salivary gland of the mosquito a, through it into the 

 oesophagus b, and finally into the proboscis c. 



To face bagc 144. 



