236 



The following arrangement of these hairs is 

 found in Indian species of larvae, the only larvae 

 as yet systematically described. 



1. Fully developed hairs on all segments 

 (one to seven) and on the thorax. 



P. jeyporensis 

 M. listont 

 M. culicifacies 



2. Fully developed hairs , on the second 

 to seventh, or third to seventh segments. Rudi- 

 mentary hairs on the second or even first abdominal 

 segments and on the thorax. 



N. stephensi 

 N. maculatus 

 N. theobaldi 



3. Palmate hairs confined to the third,fourth, 

 fifth, sixth, and seventh segments. 



M. sinensis 

 M. harbirostris 

 A. maculipennis (Nuttall and Shipley) 



4. Palmate hairs confined to the fourth, 

 fifth, and sixth segments. 



M. turkhudi 

 The LeafleU. — In the well-grown larvae each 

 palmate hair consists, as a rule, of nineteen or , 

 twenty leaflets arising close together from a short 

 stalk, *and forming a semi-circular fan. When 

 collapsed, as is the case when the larvae is beneath 

 the surface, these hairs are inconspicuous. When, 

 however, the larvae takes up its characteristic 

 attitude at the surface of the water, these spread 

 out fan- like, and are very striking objects under 

 the microscope. In the freshly hatched larva, 

 the separate leaflets appear to be folded together, 

 so that the hair has the appearance of a single 



