Fig. 22. — Diagram of the life-cycle of Lankesteria culicis (Ross). 

 A, escape of eight sporozoites from oocyst, and infection of 

 intestinal cells of mosquito larva ; B, growth of young 

 Gregarine till it protrudes from the cell though remaining 

 attached ; C, free trophozoite in the limaen of intestine ; 

 D, association of two sporonts in the Malpighian tube ; 

 E-G, associated sporonts in gametocyst, showing nuclear 

 multiplication ; H, nuclei arranged on svirface of body ; 

 I-J, formation of gametes ; K, fusion of gametes ; L, zygotes 

 elongated and encysted in oocysts, in which nuclear multi- 

 plication and formation of eight sporozoites is taking place. 

 (After Wenyon.) (Xc. 1000.) 



