I can't tell from those pictures. It is much easier to do in person...ha ha...maybe two girls...

Lift their tail up slightly and look at the tail area right below the vent...If you see two elongated looking buldges, it is probably a male and those two buldges are its hemipeni. If you see no buldge, but more like a slightly raised area...it is probably a female.

But I would not consider that reliable without the experience of having been 'shown' what to look for.....it is easy once someone shows you the difference between a male and female in person.....or at least that is my opinion.