PROCEEDINGS OF SECTION D. 295 
upon foreign species may not, therefore, be applicable to local 
conditions. No timber is immune from borers, though some, 
like the turpentine tree of New South Wales, resist more than 
others. In tropical regions submerged woodwork may require 
protection in fresh as well as in salt water from several kinds 
of borers. Unlike the boring Crustaceans, the shipworms do 
not use the wood for food, Oe baron are constructed for 
shelter only. They excavate by means of the foot, not the 
shell. The only reliable protection to submerged timber is 
given by a coating which excludes the entrance of the larva, and 
does not suffer from abrasion. Having entered, the shipworm 
may be destroyed by suffocation. 
ILLUSTRATIONS. 
Plate VII.—Wood bored by Sphaeroma quoyana. Original. 
Plate VIII.—Animal of Nausitoria thoracites. After Wright. 
Plate IX.—Wood bored hy Nausitoria edax. Original. 
Plate X.—Fig. 1—Animal of Sphaeroma quoyana. Original. 
2— verrucauda.  ,, 
3—Larva of Teredo. After Quatrefages. 
4—Pallet of Nausitoria thoracites. After Wright. 
o— zs x edax. Original. 
6— a AS saulii. ve 
(Oe ees ms fluviatilis. Ae 
Soh ry manni. After Wright. 
9— antarctica. After Clessin. 
10, 11—Shells of Martesia striata. After Adams. 
13.—THE ANTARCTIC ELEMENT IN THE AUSTRALIAN 
FAUNA. 
By Cuas. Hepury, F.I.S. 
14.—NOTES ON SOME DESERT BIR 
By G. A. KEARTLAND. 
15—THE LAND LEECHES OF AUSTRALIA. 
By Apa M. Lampert, M.Sc. 
16.—THE VARIATION IN THE COLOUR OF AUSTRALIAN 
BIRDS’ EGGS. 
By D. Le Sover, C.M.Z.8. 
eB 
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