Talochlamys pulleineana (Tate, 1887)
TATE, R. W. 1887. Descriptions of some new species of South Australian marine and freshwater Mollusca. Transactions and Proceedings and Report of the Royal Society of South Australia, 9: 62-74, pls. 4, 5. [p. 73, pl. 4, figs. 1a, 1b]
R. Tate, 1887, plate 4.
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«This species is allied to P. asperrimus, but less orbicular and flatter. The ribs are 33 in number, simple, subacute, crossed by close-set continuous lamellae — not interrupted on the flanks and in the sulci as in P. asperrimus. Anterior ear of right valve very narrow, elongate, radially ribbed; posterior ear, as in P. asperrimus, six-rayed raised into lamellose scales.
Dimensions.— Antero-posterior diameter, 23; umbo-ventral diameter, 19·5 millimetres. Locality.— South-East coast (Mr. R. H. Pulleine !) Among other Australian species it makes some approach to P. cruentatus and P. blandus, Reeve, but is not likely to be confounded with them.» RALPH TATE, 1887
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«Description. Shell up to c. 30 mm high, most specimens under 20 mm; thin, weakly inflated, almost equally convex, inequivalve, inequilateral, weakly prosocline, anterior auricles considerable larger and longer than posterior ones, umbonal angle c. 90°; colour pastel, whitish, cream, orange or pink with pale radial or divergent streaks and/or blotches.
Both valves sculptured with 20–24 unevenly spaced, narrow radial plicae (crests weakly convex on left valve, more acuminate on right valve) until central part of the disc; increasing by intercalation of scaly secondary riblets on each side of primary plicae from centre of disc to ventral margin. Widely spaced commarginal lamellae in interspaces, each lamella weakly frilled by traces of antimarginal ridgelets. Pre-radial microsculpture of antimarginal ridgelets crossed by prominent commarginal ridges. Auricles strongly ridged and scaly. Byssal notch moderately deep, byssal fasciole broad. Functional ctenolium well-developed, with c. 4–6 teeth. Dimensions. Illustrated specimen: NSW, E of Broken Bay, 410–506 m (AM C.142144): rv: H 30.0, L 28.7 mm; lv: H 30.1, L 28.4 mm; D 7.9 mm. Iredale (1925: 253) stated the dimensions of the two syntypes (which he evidently thought represented one specimen) of Chlamys famigerator as rv: H 15, L 14 m; lv: H 17, L 16 mm.
Habitat. Living in the sublittoral to bathyal zones, amongst rubble or shell debris on soft sediment (sand and mud).
Distribution. Widespread around southern Australia, ranging from southern Queensland (21°S) southwards and westwards to the Rottnest Shelf (25°S) off Western Australia. Present specimens alive at 18–500 m.
Remarks. For comparison with the closest Recent congener Talochlamys dichroa (Suter, 1909) from New Zealand see Beu (1995: 18), Beu & Darragh (2001: 95), and Dijkstra & Marshall (2008: 51, figs 42–45).»
DIJKSTRA, H. H. & A. G. BEU. 2018. Living scallops of Australia and adjacent waters (Mollusca: Bivalvia: Pectinoidea: Propeamussiidae, Cyclochlamydidae and Pectinidae). Records of the Australian Museum, 70 (2): 113-330, figs. 1-102. [p. 270, 271]
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Talochlamys pulleineana (Tate); H. H. Dijkstra & A. G. Beu, 2018, Living scallops of australia and adjacent waters, figures 82D. 82E, 84D, 84E, 84G.
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«Pecten pulleineanus Tate (1887, p.12, pl.4, fig. 1a,b) appears to be based on the same species as Chlamys famigerator Iredale. The holotype (South Austalian Museum, D14171) is a right valve similar to the
syntypes of Chlamys famigerator (H.H. Dijkstra, Amsterdam, pers. comm. September 1994). Tate clearly described the sculpure as "crossed by close-set continuous lamellae" and the radial costae as narrow, so it appears to be based on the common narrow-ribbed morph with numerous secondary and tertiary costellae. The distribution, from southern Western Australia to central New South Wales, certainly makes this synonymy reasonable. A few specimens of Talochlamys pulleineana in the Australian Museum collection (Eden, New South Wales, ex Lee Woolacott colln., one pair; E6184, south of Cape Everard, Victoria, F.I.S. "Endeavour", one pair) are orange-brown or cream with wide red-brown bands, and have a closely similar appearance to and the same wide rib-crests as T. dichroa (Suter). T.
dichroa could be described as an overall "enlarged" form of T. pulleineana, reaching a larger size (commonly 40-45 mm high, compared with uncommonly over 20 mm high in T. pulleineana) and having proportionally wider costae and more prominent scales. There is little doubt that, despite the suggestion by Waller (1991, p. 29-30) that T. dichroa is a member of Zygochlamys, T. dichroa ís closely related phylogenetically o T. pulleineana and should be referred a Talochlamys. A very different origin from that of Zygochlamys delicatula is also indicated by their geological histories as, whereas Zygochlamys is a South American group that reached New Zealand during earliest Pliocene time (Z. seymouri Marwick, Momoe-a-Toa Tuff, Chatham Island), Talochlamys of the T. chathamensis species group has lived in New Zealand since at least Late Eocene time (Maxwell 1992, p. 65, pl. 3g-i).»
BEU, A. G. 1995. Pliocene Limestones and their scallops. Lithostratigraphy, pectinid biostratigraphy, and paleogeography of eastern North Island late Neogene limestone. Institute of Geological & Nuclear Sciences Monograph, 10: 1-243, figs. 1-95. (New Zealand Geological Survey Paleontological Bulletin, 68). Institute of Geological and Nuclear Sciences, Ltd., Lower Hutt, New Zealand. [p. 18]
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