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). 
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). 
T aeniorhynchus .—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 Taeniorhynchus will be readily 
found. 
1. Note that the larva lies often embedded in 
the masses of green Spirogyra or other thread-like algae. 
