I have done a bit of looking around on google images, and I thik you might have a funnel web there.
Might pay to check with someone who knows more about it. If it is they can kill you with one bite. There is anti dote to their poisin, but I don't know if there is much on your side of the world.
Check this page out. It might help, but if there is any chance it is a funnel web I wouldn't take it.
http://www.termite.com.au/spider-identification.html" onclick="window.open(this.href);return false;
Sydney Funnel-Web spiders: aggressive by nature - can be deadly
FEMALE
MALE
Area of distribution: The Sydney Funnel-Web Spider is a ground dweller, commonly found in moist soil areas along much of the eastern coastal area of New South Wales and Victoria.
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Venom toxicity: - The Sydney Funnel-Web Spider is one of the world's most deadly spiders. Both the male and female carry atraxotoxin, one of the world's most dangerous toxins.
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DANGER TIME: The mature male Sydney funnel-web spider will leave it's burrow and wander off during hot humid nights, looking for a mate. At this time it is known to enter homes, lodge in footwear, clothing and swimming pools, where they can survive several days under water.
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Highly aggressive: The male Sydney funnel web spider is highly aggressive when disturbed or cornered and is able to inflict multiple bites, with its "flick-knife" hardened fangs.
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Heavy rain or earthworks will drive the Sydney funnel-web spider out of it's burrow and are commonly found wandering around the garden or in the home at such times.
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An anti-venom is available in most major hospitals and ambulance vehicles in "funnel-web country". If bitten, you should apply first aid and medical attention (ambulance) should be sought as soon as possible.
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Spider identification: -The male Sydney funnel-web spider is about 25 mm and the female about 30 mm in body length. They are shiny black in colour with a dark purplish brown abdomen with a covering of reddish hairs.
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Unique identification markings include it's long spinnerets, that is, the two appendages on the end of the abdomen. Also the male Sydney funnel-web spider has a distinctive spur on both it's second front legs - refer to illustration on left.
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The Blue Mountains funnel-web spider is highly venomous and is found in the Blue Mountains area, as far west as the Bathurst - Orange region and occasionally in the Sydney basin.
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The Northern tree funnel-web spider is highly venomous and is found in south-eastern Queensland and northern New South Wales as far south as the Hunter Valley region.