358 



SPOROZOA. 



each of which develops into a spore (/) . When the spore reaches 

 the gut of a new host-larva the filament is extruded (J) and 

 the sporoplasm emerges as an amoebula, starting the develop- 

 ment again. 



Dimensions. — ^Meronts 3-4 ju, in diameter ; sporonts 9-1 O^a 

 by 4-6 /x ; spores 4-75-6//. by 3-4/>(,. 



Remarks. — Iyengar (1929) described the life-cycle of Thelo- 

 hania sp. from Anopheles pseudojam^esi Strickland & Chowd- 

 hury {^=A. ramsayi Covell), and found it similar to T. legeri as 

 described by Kudo. The measurements of the spores as 

 recorded by him also fall within the limits of this species. 



Fig. 177. — Life-cycle of Thelohania legeri Hesse. A, youngest stage % 

 B, formation of schizonts ; C, large schizont with four 

 nuclei ; D, formation of binucleate forms ; E, sporont ; 

 F, O, H, nuclear division of sporont to form binucleate, 

 tetranucleate or octonucleate stages ; /, pansporoblast 

 with eight sporoblasts ; ./, spore with extruded filament. 

 (After Kudo.) 



Habitat. — Adipose tissue cells of larvae of Anopheles 

 barbirostris Van der WuJp, A. annularis Van der Wulp {^A. 

 fuliginosus Giles), A. varuna Iyengar, A. hyrcanus (Giles), 

 A. ramsayi Covell, and A. subpictus Grassi {=A. rossi Giles) : 

 Bengal. 



