2 literature references for Pseudotrachya amaza (de Laubenfels, 1934):

Author: Laubenfels, M.W. De
Year: 1934
Title: New sponges from the Puerto Rican deep.
Source: Smithsonian Miscellaneous Collections 91(17): 1-28.
Author: Boury-Esnault, N.
Year: 2002
Title: Family Polymastiidae Gray, 1867.