Remove first element of a list

Good evening!

Very simple question here: 

I would like to remove the first element of a list of multiple untrimmed surfaces.

I succeeded at removing the LAST with Cull Index and using -1 as the Index value, but how can I do the same with the FIRST item, knowing that my list could grow and not always stay at 7 untrimmed surfaces. 

Thanks plenty!

Étienne