THE MALARIAL MOSQUITO 



117 



The halteres (balancers) are plainly visible. 

 The legs are long, slender; fifth segment carries pair of claws. 

 In order to spot the male from the female readily use the antennas 

 as the chief guide. 



-^iSPEajStev 



8 



9 



Various forms of Mosquito Eggs. — (l) Egg-boat of Ciilex, seen from above; (2) the same, 

 side view (after Sambon) ; (3) separate Cities eggs; (4) eggs of Panoplites (after Daniels); 

 (5) ^gg^ "^f Stegomyia ; (6) the same more highly magnified (after Theobald) ; (7) groups of 

 Attophales eggs, as they float on the water (after Sambon) ; (8) egg of Anopheles maculipennis, 

 showing lateral floats, seen from above, ;< 30 diams. ; (9) the same, viewed laterally (after 

 Nuttall). 



a, eggs of Culex ; b^ b'^, eggs of Anopheles ; c, egg of Stegomyia ; d, egg of 

 Teeniorhynchus ; e, egg of Psorophora. 



For the differentiation of species see a special work. 

 Eggs. — These are laid on the surface of the water — 

 If as a sheet of jelly-like frog's spawn they are of the Corethra. 



