The way I understand it is the amount of tokens you received is fixed. The value of a token will of course fluctuate.
I don't think you need to 'claim' them since etherscan.io already shows them being transfered to you.
https://etherscan.io/address/YOURADDRESS#tokentxns
Replace YOURADDRESS with the address you sent from.
I hope someone will comment if I have this wrong.
Definitely, you will need to claim your tokens as supposed to be transferred to your Ether Address
Instructions to follow are posted in the EOS Token Distribution https://www.eos.io/instructions