Posted: 17/06/2016 at 18:50
If they are soft they could be some kind of centipede but most of those only eat dead vegetation. It could be that something else is killing your plants/bulbs and they are just eating what remains. Have a look at this site to see if you can see anything similar. This is based in my home county so may not apply everywhere but I find it a valuable resource and they have excellent photos:
Good luck in resolving!