November, 1940 
The Queensland Naturalist 
103 
more than pairs. This gathering would hardly have been 
owing to lack of water as there were numerous water- 
holes up and down Muckadilla Creek, and at other places 
at the time. 
Doubtless a number of other birds with the same 
habit might be added to this list with more careful ob- 
servation, and I shall be glad to hear of any such, 
especially of any other species, from readers. 
The reasons for such gatherings may so far be only 
conjectural. The best reason T can suggest is as follows: 
That it may be a provision of Nature causing some 
of those birds which do not have the migratory urge and 
habit, to gather together in certain seasons, during which 
gatherings, usually occurring in autumn or early winter 
and before the breeding period, they by some means 
manage to readjust their family alliances, thus accom- 
plishing what probably happens during the annual migra- 
tions of other birds, and by such means preventing the 
inbreeding, which would probably occur amongst birds 
which always remained in the one locality. 
I may mention three other birds, and T do so with due 
reserve, as I am not certain if they belong to the same 
category as those previously mentioned. 
The Bush Lark ( Mirafra javonica ), seen in northern 
inland Queensland in September, 1937, in forest and grass 
in a scattered flock of a few scores over an area of two or 
three acres. 
The Pratincole (Swallow-Plover), seen in large 
numbers over two or three miles of plain country near 
water pbout 100 miles south of Hughenden, August-Sep- 
tember, 1937. 
The Frigate Bird ( Fregaia sp.), seen in South-East 
Papua, July, 1929, in a large company of three or four 
score. 
THREE NEW CHALCTDOIDEA FROM AUSTRALIA. 
By A. A. Girault, B.Sc. 
Lincolna Girault, now Miscogasteridae. 
About half the size of Trichilog aster Mavr (type 
xanthocepholas compared), and the antennae are inserted 
distinctly below the middle of the face, slightly below the 
eyes. Axillae joined or nearly. Abdomen depressed, 
widest at the middle, the second segment a fourth of the 
surface, exceeding Nos. 3 and 4, which are equal, but No. 5 
