These paintings are from the French artist Guillaume Seignac (1870 - 1924). Seignac was typical for the French academic style of the Salon, where he was very successfull with his mythological and nude paintings. Normally he combined both.
Usually its told that the French academic style had its roots in Neo-classicism. But I think at least Seignac is nearly pure Neo-Rococo. Here are the same pastel colors, the same lascivious women in the same poses. The only difference is that the women are a little less curvy and maybe a little more childish.
Maybe its a influence of the Pre-Raphaelites or only an adaption to contemporary taste.