The South ylhistralian NaturaUst. 
S9 
tlii 
4 
There is a somewhat similar condition found in the remote 
family of this same sub-order, viz., Gnathidac, Sec Smith, “Cam- 
bridge Natural History”, Vol. IV., p. 125, also in the family next 
following, the sphaeromids, the serolidae. See Beddard, Challen- 
ger Report, Serolidae, pages 14 and IS. 
Piconomically speaking these animals are non-parasitic and 
scavenging habits, but two or three species are guilty of boring in 
wood and are the cause of a lot of damage to piles and other 
wood- work. 
’ I must add that nearly all the information here recorded was 
: obtained from the valuable paper by Dr. Hansen, of Copenhagen 
: Quarterly Journal of Microscopic Science, Oct. 1905. 
: o : 
OUR EXCHANGES. 
or- 
o[ 
ed ■ 
r- i 
0 ; 
r 
1. The Australian Aluseum Adagazine, January — May, 1926, 
July — September, 1926. 
2. The Victorian Naturalist. June. 
3. The Queensland Naturalist. April. 
4. The S.A. Ornithologist. April. 
5. Annual Report of Town Planning Association of Victoria. 
6. Proceedings of the Polish Vluseum of Natural History of 
Warsaw. 
7. Lists of Books on the History of Science, compiled and 
forwarded by the fohn Crerar Library, Chicago, 
U.S.A. 
8 . 
Pamphlets on Scientific Subjects issued by the Smithson- 
ian Institution, Washington, D.C., LI. S.A. The 
series comprises the following subjects: — 
The Drifting of the Continents ; Egypt as a Field for An- 
thropological Research; The Origin of the Solar Sys- 
tem; The Vacuum — There’s Something in it; John Mix 
Stanley, Artist-Explorer; Nests and Nesting Habits of 
the Ainerican Eagle; The Breeding Places of the Eel; 
iV. American Indian Dzvellings ; Shamanism of the 
Natives of Siberia; Historical Tradition and Oriental 
Research; Cankerzvor?ns ; Herluf Winge; Clear lused 
Quartz made in the Electric Furnace; The Physicist s 
Present Conception of the Atom; The Use of Radium 
in Medicine; A Modern Menagerie; The Nature of 
Language; The Probable Solution of the Climate 
Problem in Geology; The Electrical Structure of 
Matter. 
Proceedings of the Academy of Natural Sciences of Phila- 
