looking for list of all C. elegans channels

I would like to create an RNAi sub-library to target all predicted C. elegans channels. Has anyone compiled such a list, or lists for particular channel families? If so, please feel free to email me directly at: dmferkey@buffalo.edu
Thanks!

I could imagine, you could go by all kinds of protein/gene families or just protein domains.
Personally I would start out with something like a list based on Gene Ontology and refine it by merging with protein domains, etc.