writing elements in list as a data frame

sls <- list(a=matrix(sample(10), ncol=2, dimnames=list(NULL, c('x', 'y'))),

sls

# create output matrix
do.call('rbind', lapply(names(sls), function(.name){

Dear R-helpers,
Lists in R are stumbling block for me.

I kindly ask you to help me able to write a
data-frame.

I have a list of lists.

sls[1:2]

$Andromeda_maya1
      x   y
[1,] 369 103
[2,] 382 265
[3,] 317 471
[4,] 169 465
[5,] 577 333

$Andromeda_maya2
       x   y
 [1,] 173 507
 [2,] 540 395
 [3,] 268 143
 [4,] 346 175
 [5,] 489  91

I want to be able to write a data.frame like the
following:
X   Y     Name
369 103  Andromeda_maya1
382 265  Andromeda_maya1
317 471  Andromeda_maya1
169 465  Andromeda_maya1
577 333  Andromeda_maya1
173 507  Andromeda_maya2
540 395  Andromeda_maya2
268 143  Andromeda_maya2
346 175  Andromeda_maya2
489  91  Andromeda_maya2

Is there a way to convert this list-of-list into a
data.frame.

Thanks
srini