148 



A. INGRAM AND J. W. S. MACFIE. 



occurred singly, drifting with the wind-swept water, and were very readily alarmed, 

 when they sank at once to the bottom. The water in which they flourished was 

 exposed to the full glare of the sun and was quite hot. 



Fig. 6. Larva of Culex tlialassius, Theo. ; head and end of abdomen 



a, mental plate. 



Another sample was collected from a pool into which the sea poured at each high 

 tide (see Plate III. fig. 1) ; a small crab found in this pool was a most voracious 

 feeder on the larvae. 



Other samples, however, were obtained from fresh- water pools, collections of rain- 

 water, etc., so that a high degree of salinity is not essential for this species. No 



