If there’s any guy crazy enough to attack me, I’m going to show him the end of the world—close up. I’m going to let him see the kingdom come with his own eyes. I’m going to send him straight to the Southern Hemisphere and let the ashes of death rain all over him and the kangaroos and the wallabies.
(H. Murakami; 1Q84)
What 'the's' should signify here?
They are there to show that the author doesn't mean just any kangaroos or wallabies, but specific ones, namely those where the person will be sent. It's a rather long-winded way of saying 'Australia'.