Seeing an insect trend here....Or is a Scorpion in a different classification.... 
The Scorpion line is a paint scheme. They've got a cute Hogue scorpion/snake looking grip and a tan sprayed on coating. Basically, the same gun they sell normally. You can get the "Scorpion" look on several models. It's a gimmick, nothing more with some better bits maybe...short reset trigger on the P series guns.
On a side note, they did release a P938 to supplement the anemic .380, P238. The P938 is a 9mm version of the "Colt Mustang" knockoff they released last year.
Edit...a scorpion is technically an arachnid or of the spider genus...