26 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
the barrels in the yard the water swarmed with Culex and Stegomyia 
larvae, and in the wells and tubs in the garden the larvae of Anopheles 
and Culex were found in all of them in good numbers. Besides these 
breeding-places there were many domestic articles scattered about 
in odd corners of the yard, which in the wet season would also have 
acted as breeding-places. 
The Species of Mosquitoes Found in Compounds 
It was observed that larvae of A. costalis were frequently found in rain-tubs 
and smaller articles containing water. Though many of these larvae may have been 
originally transferred to some or these articles along with the water drawn from the 
well, yet the occurrence of batches of larvae of the same age and in fair numbers would 
tend to show that this species of mosquito avails itself of these small collections of 
water in which to breed. 
Stegomyia fasciata, in tubs and old bottles, etc. 
Culex fatigans ,, ,, especially when the water was foul 
A. costalis, tubs and barrels 
Culex duttoni 
Culex birsutipalpis 
Stegomyia pagens (rare), in ground-nut gutters 
The wash-tubs, garden-tubs, wells, and rain-barrels occurring 
in compounds form the chief source of mosquito in Bathurst for at 
least six months of the dry season, when all other breeding-places, 
artificial and natural, have ceased to exist. 
Natural Breeding-Places for Mosquitoes in Bathurst 
The natural breeding-places for mosquitoes in Bathurst occur for the most 
part in the swampy districts, namely. Box Bar, Halt Die, and the small swamp behind 
the Hospital ; a few natural hollows in some of the streets, more especially those 
bordering on the swamps, collect rain-water, in which mosquitoes breed. 
Box Bar. In the wet season this swamp is covered by a considerable mass of 
water, which encroaches on to New Town and Portuguese Town and into the centre 
of Bathurst at Albion Place, the streets in these neighbourhoods being flooded at this 
season of the year ; how far this swamp acts as a breeding-place for mosquitoes in 
the height of the wet season (July and August) I cannot say definitely, but judging 
