[1] Between the wars, he occupied the very modest function of "préparateur" in a laboratory of the National Museum of Natural History in Paris.

However, he was able to carry out scientific expeditions in Morocco (1923-1928), the Red Sea (1928-1929) and in 1929-1930 in the Atlantic on the RV "Pourquoi Pas?".

After the Second World War, he became a confirmed and famous helminthologist and parasitologist, but never succeeded in obtaining a post of Professor at the National Museum of Natural History.

[1] Every spring, Robert-Philippe Dollfus went to Morocco, where his daughter lived, to work at the Institut Scientifique Chérifien.

Genera include the digenean Dollfustrema Eckmann, 1934,[5] the cestode Dollfusiella Campbell & Beveridge, 1994,[6] and the Acanthocephala Dollfusentis Golvan, 1969.