Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions Author Calder, Dale R. Author Choong, Henry H. C. text Zootaxa 2018 2018-10-02 4487 1 1 83 journal article 29136 10.11646/zootaxa.4487.1.1 939f52d6-d58b-4a22-8aec-dd5c6a591067 1175-5326 1456161 524B23B9-8EAA-4BD6-8937-A1B8F1C057B9 Aglaophenia transitionis Fraser, 1941b Aglaophenia transitionis Fraser, 1941b : 87 , pl. 18, figs. 14a, b. Holotype . USNM 43458 : USA , California , San Francisco, off Golden Gate, R / V Albatross Sta. 3150, 37°47’N , 122°44’10”W , 38 m , 21 March 1890 , large beam trawl, one colony, badly broken up, with several fragments of a hydrocaulus and numerous detached, fragmented hydrocladia, without gonophores, labelled “ type ”; ethanol. Paratypes . BCPM 976-00811-001 : USA , California , San Francisco , off Golden Gate , 38 m , several colony fragments, up to 6.3 cm high, in poor condition, without gonophores; dry. Type locality. USA , California : off Golden Gate , 37°47’N , 122°44’10”W , 21 fm ( 38 m ) ( Fraser 1941b ). Current status. Valid. Remarks. In describing Aglaophenia transitionis , Fraser (1941b) designated material from the NMNH (USNM 43458) as the “ type .” That collection, thereby fixed as the name-bearing type (ICZN Art. 72.1.2), is currently listed as a syntype in the NMNH online database. Although Fraser’s “ type ” is now badly fragmented, we believe it is based on a single specimen and is a holotype . Material from the same collection at the RBCM (BCPM 976-00811-001) is excluded as a name-bearing type in not having been fixed as such in the original description (ICZN Art. 72.1.2). It constitutes a paratype . Fraser (1941b) did not observe fertile specimens of Aglaophenia transitionis , and we saw no gonophores on the holotype . This species is listed as valid in WoRMS but remains poorly known.