Nutting, 1900 : 94 Aglaophenia elegans Lamouroux, 1816 Fraser, 1944a : 387 Aglaophenia elegans Nutting, 1900 Aglaophenia elegans Lamouroux, 1816 Aglaophenia elegans A. raridentata A. apocarpa Allman, 1877 A. apocarpa A. lophocarpa Allman, 1877 A. apocarpa Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions Calder, Dale R. Choong, Henry H. C. Zootaxa 2018 2018-10-02 4487 1 1 83 Fraser, 1944 a Fraser 1944 [151,622,152,178] Hydrozoa Campanulariidae Aglaophenia GBIF Animalia Leptothecata 59 60 Cnidaria species raridentata     Aglaophenia elegans  Nutting, 1900: 94, pl. 19, figs. 3, 4 [invalid junior primary homonym of  Aglaophenia elegans Lamouroux, 1816].    Aglaophenia raridentata  Fraser, 1944a: 387, pl. 83, figs. 376a, b [replacement name for  Aglaophenia elegans Nutting, 1900, not  Aglaophenia elegans Lamouroux, 1816].   Syntypes.USNM 18645: USA, Florida, Straits of Florida, FloridaKeys, 8 miles( 13 km) off American Shoal Light, State University of Iowa BahamasExpedition of 1893, Sta. 62, 128– 146 m, 29 June 1893; two slides.  USNM 69685: USA, Florida, Straits of Florida, FloridaKeys, 8 miles( 13 km) off American Shoal Light, State University of Iowa BahamasExpedition of 1893, Sta. 62, 128– 146 m, 29 June 1893; ethanol.     Typelocality. USA, Florida: off Sand Key, 70–80 fm (  128–146 m) ( Nutting 1900).  Current status.Invalid.   Remarks.The binomen  Aglaophenia raridentatawas proposed by Fraser (1944a)as a new replacement name for  Aglaophenia elegans Nutting, 1900(not  Aglaophenia elegans Lamouroux, 1816). The two therefore have the same typelocality and the same name-bearing typematerial (ICZN Arts. 67.8, 72.7). A degree of uncertainty exists about specimens that qualify as name-bearing typesof new species described by Nutting (1900), including  Aglaophenia elegans. A procedure was established by him whereby “…three series of slides [were prepared] from the same typespecimen… These series were then distributed to the United StatesNational Museum, the Museum of the State University of Iowa, and the private collection of the author” ( Nutting 1900: 58). In Nutting’s monograph, catalogue numbers were provided for slides at the “USNM” (NMNH) and at the university museum at Iowa(designated as “ Typeslides”), but not for the “ typespecimen” from which the slides were made, nor for slides in the Nutting Collection. Unless other evidence is found, the original “ typespecimen” cannot clearly be identified as such. The NMNH online database lists as typesonly those specimens on numbered slides. In his account of  Aglaophenia elegans, Nutting (1900)explicitly assigned typestatus to material on slides at the NMNH (USNM 18645), at the Museum of the State University of Iowa( No. 15354), and in his personal collection (unnumbered). The latter two collections are likely to have been sent to the NMNH in a transfer of collections from Iowaafter Nutting’s death ( Calder 2004: 23). It is unclear whether those slides were combined to form part of the syntypematerial listed above. Meanwhile, material of the species in ethanol at the NMNH (USNM 69685) is part of the same collection as the syntypeslides, but it is not classified in the online database as part of the typeseries. It is regarded here as part of the syntypeseries.    Aglaophenia elegansand its objective synonym  A. raridentataare subjective junior synonyms of  A. apocarpaAllman, 1877, a hydroid described from the same area (Sand Key) in the Straits of Florida( Bedot 1921; Bogle 1975; Cairns et al. 2002). As for the binomen  A. apocarpa, confusion persists over whether it or  A. lophocarpaAllman, 1877has precedence when the two are considered synonyms. As First Reviser (ICZN Art. 24.2), Bedot (1921)assigned precedence to the name  A. apocarpa(see Calder 1997: 54). 1915526037 [199,1133,556,581] United States of America 137 Sand Key 59 60 1 Florida holotype