Already Got Dusclops

I've caught Duskull, Dusclops, Sableye, and Shuppet, waiting for a worthy Shuppet to evolve it into a Banette. Although I wish the bone texture on Duskull were a bit sharper.

Got myself a 96%, level 20 Shuppet with my first Gen 3.

Heh. My first non-baby Gen 2 Pokémon was a 96% Level 6 Natu.

I'll take that coincidence.

Can someone confirm if there is another evolve after Duskull and Dusclops. Do i spend candy now or keep collecting?