83 



2. Note the great transparency of the larva and 

 the frequency with which brilliantly green specimens 

 are found. 



Under a low objective note the following, which 

 appear to be characteristic of this genus : 



I. The enormous horn-like and curved antennae 

 (Fig. 29). 



Fig. 29. Culex fatigans (left). Taeniorbynchus sp. (right) 



2. The extreme length and slenderness of the 

 syphon tube (Fig. 27). 



Psorophora. The larvae are large, half-an-inch in 

 length. They are extremely cannibalistic. 



THE NYMPH 



The nymphae of mosquitoeb are extremely 

 characteristic bulbous comma-shaped creatures, having 

 a large globular body (head and thorax) and a small 

 tail, kept more or less tucked in beneath. When 

 disturbed they dart downwards with great speed, but 

 very soon reappear at the surface. 



Nymphs are not so easily seen in pools as larvae. 



The differences in the nymphae of different 



