82 



MORE MINOR HORRORS 



it is these brushes which sweep the food 

 into the mouth of the young and voracious 

 larva. The base of this brush is so arranged 



Fig. 21. — Ventral view of head of a fully grown larva of 

 Anopheles maculipennis. b, Brush ; c, antenna ; d, palp of 

 maadlla ; j, stout hairs of mandible, which arrange the brush ; 

 A, teeth of mandible ; m, hooked hairs at edge of maxilla ; 

 p, median tuft of hairs ; q, the * underlip ' of Meinert, or 

 metastoma ; r, thickened rim which passes into the soft 

 tissues of the neck. (From Nuttall and Shipley.) 



that when depressed and bent towards the 

 mouth the two brushes approximate, but 

 each brush can move independently and 

 often does so : one may be depressed towards 

 the mouth, whilst the other remains erect. 



The larva passes its life hanging on to 

 the under surface of the silrface-film of the 

 water, its dorsal surface being uppermost. 

 In fact, as Sidney Smith pointed out about 



