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A. T. STANTON — THE ANOPHELES 



clypeal hairs are simple. Thorax. On the thorax are borne four pairs of simple 

 leaflets, precursors of the stout feathered hairs and palmate hairs of the more 

 mature forms. Abdomen. Simple leaflets are borne on the third to seventh 

 segments inclusive, that on the seventh being much smaller than the others. 



Fig. 3. — Head and thorax of mature larva of Anopheles tessellatus. 



The Mature Larva (fig. 3). 



Head. The inner anterior clypeal hairs are placed about one-third the breadth 

 of the head apart, they are long and stout and with the higher powers of the 

 microscope are seen to be finely pinnate (fig. 4a) ; the outer clypeal hair is 

 short, only about one- fifth the length of the inner and is seen with difficulty 



/ 



Fig. 4.— Larva of Anopheles tessellatus, Theo. ; (a) inner anterior clypeal hair ; (b) palmate 

 hair of sixth abdominal segment ; (c) leaflet of the same palmate hair. 



in the living larva — it is a simple hair; the posterior hair is placed far back 

 and is simple. The body of the antenna is thickly beset with small spines 

 and carries a tiny simple spicule on its anterolateral aspect, about one-third of 



