I need help finding a lure!!?

Okay, so I found a soft plastic bug that I can't identify at all in my tackle box. If I had it with me right now I'd take a picture. Okay, it was about 2" long and looked very much like a hellgrammite/crayfish hybrid sorta bug. It was hollow, brown, and soft-plastic of course. I texas-rigged it with a size 4 hook and it floated (is that a word?), I twitched it a few times and got a nice lil' Green Sunfish. I caught maybe two more Green Sunfish and then it's success wore off. I could see how it could definitely catch a few decent bass as well, in maybe a larger size. Anyone have any idea on what I'm talkin' about? I'll appreciate all answers.