margarita snails - eggs???

So last night I noticed on my glass white circles with small yellow inner circles. The only things in my tank that are new are 6 'margarita' snails. They do look like the pics I see of snail eggs online and the snails look like the pics I see of margarita snails. Now the next thing is that everything I just read says they do not breed in tanks. So if they dont' breed in tanks what is on my glass? I don't have any other pairs of snails. The other two kinds I have are one of each and they have been there since the start almost 1-1/2 yrs so I doubt they decided now to make eggs.

They look like this pic...not mine but I found it online...


Does anyone think they may actually hatch or are they just taking up space on my glass? There are probably at least three dozen of them.

Just previewed what I am posting and didn't even notice the snail in the pic before but it looks very similar to my new snails also. I have 3 largish ones and three about the size in this pic.

you sure it isn't flatworms?

their snail eggs. unfortunately I had 1st hand experiance with the flat worms and thats not them. I have pictures somewhere I'll try to find them.

flat worm with a couple baby snails my sixline eats the flat worms so they donot become a problem.

heres a picture of sandskaters,isopods and to the left you can see a baby snail all harmless.

look at this site its a good one, check out the acro eating flatworms
http://www.melevsreef.com/id/flatworm.html

lol heres a hitchhiking baby GBTA:)

Thanks for the info!!

So I guess they will hatch, Just leave them alone? Any clue how long they take to hatch? I could use some extra snails!

they probably are already hatched. do they dissapear when the lights off? their like a little round booger without a visable shell correct?
mine always end up as food but hey maybe yours will get to grown up:)
these are narcissus vibex eggs