82 



bottom of the water, and then lies for the most part 

 horizontally. 



The head is small in proportion to the rest of 

 the body, and the thorax is less conspicuously marked 

 off from the abdomen than in Culex. 



The antennae resemble those of Anopheline larvae, 

 more than those of Culex. The large branched hair 

 of Culex is represented by a short inconspicuous simple 

 hair (or as many as three) projecting from the side of 

 the antennae (Fig. 28). 



*. rj (J 



A 



Fig. 28. Antennae and Mental Plates of Larvae 



The syphon tube is dark in colour, short and stout, 

 only twice as long as broad (Fig. 27). 



Taeniorbyncbus. In natural waters, especially 

 shallow trickling water forming pools, with a dense 

 growth of Spirogyra, etc., in swamp water and river 

 margins, the larvae of 1 ' aeniorhynchus will be readily 

 found. 



I. Note that the larva lies often embedded in 

 the masses of green Spirogyra or other thread-like algae. 



