Mongolian death worm or Allghoi Khorkhoi.

[Stecal]

Ok, someone needs to make a mini for this thing!

ARMED with explosives, two men are heading to Mongolia's Gobi Desert to find the fabled acid-spitting and lightning-throwing Mongolian death worm.

http://www.news.com.au/heraldsun/story/0,21985,25874481-663,00.html

[Bako]

  Sweet find!

...or shooting lightning from its rectum over long distances

That would be a sight to behold...

[Uncle Mike]

I once did that after an all nite orgy/pig roast...

Seriously thou I think there is a model out there for that already...not sure who makes it...

[marko.oja]

Rattrap does:

http://rattrapproductions.com/store/index.php?main_page=product_info&cPath=4_5&products_id=28

Marko

[Smith]

Could also use this one:

http://paizo.com/store/byCompany/w/wizardsOfTheCoast/byProductType/miniaturesGames/dungeonsAndDragons/dnd/singles/warOfTheDragonQueen/v5748btpy7sax

[JollyBob]

I painted some of the Heresy slug things to use as Mongolian Deathworms:



Maybe a bit smaller than you'd like though.

[rob_the_robgoblin]

I actually think they suit very well.
Why would it need to be huge by any means?

[JollyBob]

From what I've read, the Allghoi Khorkhoi is about six to eight feet long, and the Heresy slugs are maybe a bit small for that.

That said, if they're smaller, they can sneak up on you easier!

Then again, here's a picture I did when I was messing about (sorry for the curseword!):



Doesn't look too bad next to Indy. 

[Altius]

Reaper has a couple that might work:

http://www.reapermini.com/FigureFinder#detail/20018

http://www.reapermini.com/FigureFinder#detail/03009

Seeing the price of the second one, that thing's gotta be huge. But hell, you could probably put together a perfectly good worm out of Sculpey (Fimo).

[Uncle Mike]

The Heresy ones would make great babies! I need to get some...must resist...gah! They have a lot of stuff I need...

...

[Schogun]

These burrowers from Mongoose Starship Troopers are great:

http://www.iguk.co.uk/products/burrower-bug-starship-troopers-4104.aspx

[Uncle Mike]

I split a box of those Mongoose figure with a buddy...he got two and I got one to put together. The finished model looks fantastic...that said, the finished model is 40% putty. It fit together so bad somtimes I still wake up screaming! Great idea for the death worm, love the mouth...not so big a fan of all the spikey legs, but all around a great Death Worm choice.

[Doomhippie]

Yes, that's a heck of a story. Perfect for our needs, I'd say.

[Bako]

I once did that after an all nite orgy/pig roast...

 

[Wirelizard]

You know, I assumed the Mongolian Death Worms were from the inside of Rich's head when I saw them on his website... turns out reality is (as it often proves) stranger than you imagine!

For whatever value of 'reality' is appropriate for cryptofauna like this!