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A description of two new species of the genus Erenna (Siphonophora: Physonectae: Erennidae), with notes on recently collected specimens of other Erenna species
No full textThis dataset contains the digitized treatments in Plazi based on the original journal article Pugh, P. R., Haddock, S. H. D. (2016): A description of two new species of the genus Erenna (Siphonophora: Physonectae: Erennidae), with notes on recently collected specimens of other Erenna species. Zootaxa 4189 (3): 401-446, DOI: 10.11646/zootaxa.4189.3.1</span
Two new species of <em>Bargmannia</em> (Pyrostephidae, Physonectae, Siphonophorae)
No full textTwo new deep-living species of the genus Bargmannia (Siphonophorae, Physonectae, Pyrostephidae) are described based, almost exclusively, on the nectophores of single specimens collected by ROVs off the west coast of California. The nectophores of B. stenotes sp. nov. were relatively small, up to 11.4 mm in length and, in the preserved condition had very narrow nectosacs. There was a marked bend in the distal part of the preserved nectophore, resulting in the ostium opening upwards. The mature nectophores of B. profunda sp. nov. were almost twice as long as those of B. stenotes and were characterised by the fact that the lower lateral ridges did not join, distally, with the meso-lateral ones. This feature also was present in smaller nectophores of B. amoena but those of B. stenotes, at that stage, did not have a mouth-plate
A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textThe siphonophore sub-order Cystonectae presently comprises just five species in three genera and two families, and includes Physalia physalis, the Portuguese Man O’War. Despite the smallness of the group its history has been very chequered, particularly for P. physalis, which has been described under more than fifty different names. Haeckel (1888) was one of the worst offenders regarding the description of questionable species, but even Totton (1965) was uncertain as to the validity of some previously described cystonect species. Herein, an attempt has been made to review the history of the sub-order Cystonectae and to clarify its taxonomy. A list of synonyms for each recognised cystonect species is given in an appendix
FIGURE 16. Bathyphysa abyssorum Studer, 1878b. A in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 16. Bathyphysa abyssorum Studer, 1878b. A. Part of siphosomal stem, with "attached" appendages; B. Two gastrozooids; C. Bract-like structure; D. & E. Reconstructions of whole specimen; D. according to Studer (1878); E. as suggested by present author. From Studer (1978)b, Pl. III, figs. 27 (A), 38–39 (B), 25 (C), 28 (D).Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 35, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
FIGURE 11. A. Physalia cystisoma Lesson, 1826, Plate before p. 467. B in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 11. A. Physalia cystisoma Lesson, 1826, Plate before p. 467. B. Physalia Arethusa from Olfers (1832, Pl. I).Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 22, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
FIGURE 27. Cannophysa filiformis from Mayer, 1894 in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 27. Cannophysa filiformis from Mayer, 1894 (Plate III, fig. 3), with detail of tentillum of C. Eysenhardtii (Plate III, fig. 4).Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 61, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
FIGURE 25. Left. Alophota giltschiana Haeckel, 1888b – corm diameter 1.5–2 in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 25. Left. Alophota giltschiana Haeckel, 1888b – corm diameter 1.5–2 cm; and Right. Arethusa challengeri Haeckel, 1888b – corm length 4–5 cm. Figures 3 and 4, respectively, from Haeckel (1888b) Plate XXVI.Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 53, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
FIGURE 33. Bathyphysa. japonica Kawamura, 1943 in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 33. Bathyphysa. japonica Kawamura, 1943. (Figs 8-9.) G1: gastrozooid; G2: Pneumatosiphon; Pn – pneumatophore. The arrows indicate the supposed branching of the stem. Adapted from Kawamura (1954), Pl. VII, figs 8 & 9.Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 71, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
FIGURE 9. Two individual cormidia from Doc Ricketts Dive 552 in Description of Tottonophyes enigmatica gen. nov., sp. nov. (Hydrozoa, Siphonophora, Calycophorae), with a reappraisal of the function and homology of nectophoral canals
No full textFIGURE 9. Two individual cormidia from Doc Ricketts Dive 552 specimen of Tottonophyes enigmatica sp. nov. Scale bars 1 mm.Published as part of Pugh, P. R., Dunn, C.W. & Haddock, S.H.D., 2018, Description of Tottonophyes enigmatica gen. nov., sp. nov. (Hydrozoa, Siphonophora, Calycophorae), with a reappraisal of the function and homology of nectophoral canals, pp. 452-472 in Zootaxa 4415 (3) on page 465, DOI: 10.11646/zootaxa.4415.3.3, http://zenodo.org/record/124211
FIGURE 6. Rhizophysa chamissonis Eysenhardt, 1821 in A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae)
No full textFIGURE 6. Rhizophysa chamissonis Eysenhardt, 1821. Reproduced from Eysenhardt (1821), Plate XXXV, with added annotations to B. a."den dichten Theil der Krugel" = pericystic cavity of pneumatophore; b. "den mit Luft gefüllten Raum" = pneumatosaccus of pneumatophore; c. "die Oeffnung" = the anterior opening of the pneumatophore; d. "den dunklen Saum derselben" = the pigmented sphincter around the anterior pore; e. "die Arme oder Fänger" = young gastrozooids; f. "die röthlichen flockingen Fäden" = tentacles; g. "die Stelle, wo die Fänger sich vereinigen und der Kugel adhäriren" = the base of the pneumatophore where the budding zone for the siphosome lies.Published as part of Pugh, P. R., 2019, A history of the sub-order Cystonectae (Hydrozoa: Siphonophorae), pp. 1-91 in Zootaxa 4669 (1) on page 16, DOI: 10.11646/zootaxa.4669.1.1, http://zenodo.org/record/377337
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