The title in Monniot & Debitus (2015) is actually unfortunately incorrect; it should be Herdmania papietensis (Herdman, 1882). It is correctly listed in Table 1 in the publication with the parentheses around author and date
Monniot, F.; Debitus, C. (2015). Redescription of Herdmania papietensis Herdman, 1882 (Ascidiacea, Pyuridae) from Polynesia. Zootaxa. 3911: 294-300.