NEMATODA 



195 



FJG. 40. Larval Filarise in various stage of growth from the mosquito ; a to d, repre- 

 senting the first stage of metamorphosis during the first 36 hours; e to o, the changes 

 occurring during the second stage, to the close of the third day; p to t, forms seen 

 during the third stasje of metamorphosis from the fourth day onwards. The figs, u, v, 

 represent the head and tail only, whilst t shows the young Filaria in an advauced 

 stage, and drawn to a much smaller scale, than the others which are here magnified 

 about 125 diameters. Much reduced from Mansou's original figures. 



