Why are R and S omitted from epoxide names?

[member 392791]

for this epoxide, I don't understand why the R and S part are omitted from the name?? If both of the CH groups were on the back side, it would be a different molecule, yet have the same name??

 

[sjb-2812]

As discussed at chemicalforums, it's possible that the drawing is meant to represent a racemic mixture of cis isomers.