90 
The Queensland Naturalist. August, 1935. 
mained to mark its position ; in fact, the birds remove the 
egg shells as soon as the chicks hatch. The shell comes 
away from the white membrane, leaving too visible a 
signal to crows. During the breeding season, plovers wage 
continual aerial warfare with crows and various kinds of 
hawks. On August 3rd, the young plovers were removed 
from nest No. 2. The last remaining egg in No. 3 was 
hatching, and I drove away a number of mischievous grey 
and brown apostle birds ( Struthidea cinerea ), which had 
managed to hunt the parents from the nest, I received no 
thanks at all, but retired in good order. I had seen eleven 
chicks in the three nests, and as next day, the third nest 
was empty, I think I am right in concluding these birds 
hatched and took to cover, 100 per cent. Many other birds 
nested just then, and plovers are still about the ridges. 
NOTES ON THE SEDGES (FAMILY CYPERACEAE) 
FOUND IN THE BOTTLE CREEK SECTION OF THE 
BAFFLE CREEK CATCHMENT AREA. 
PORT CURTIS DISTRICT. 
By L. G. Dovey (Rosedale). 
Cypherus polystachyus : Common, often found grow- 
ing in moist sand shortly after floods have receded, and on 
soils derived from andesitic trachyte on timbered sides. 
Cyperus gracilis : Very common about dwellings and 
sheds generally on the shady side, near tank-stands, etc. 
Not too common in the open forest. It prefers a soil con- 
taining lime. 
Cyperus distans : Generally found on hills in partly 
cleared forest ; demands a rather sandy loam. It is fairly 
common on trachyte hills, and a few plants are seen on 
soil derived from amphibolite. 
Cyperus trinervis : Very common during moist sum- 
mers on sandy flats near creeks, also in gullies where the 
soil is of a gravelly nature derived from hardened slate. 
Cyperus Ha^span: This is often found in patches 
several yards square in low depressions and on moist 
sand-banks ; prefers some shelter. 
Cyperus filipes : Rare, only found so far on open ridge 
soil derived from andesite, with some detritus from 
trachyte. 
Cyperus fulvus : Very common on open ridge slopes, 
soil derived from andesite and amphibolite rocks ; does not 
transgress on to acid soils as a rule. 
Cyperus difformis : Common in creek beds in con- 
glomerate country and moist sandy spots in gullies. 
