Veprichlamys kiwaensis (Powell, 1933)
POWELL, A. W. B. 1933. Two new moluscs of the Pectinidae from 600 to 700 fathoms, four hundred miles west of New Plymouth. Transactions of the Royal Society of New Zealand, 63: 370-372, pl. 40. [p. 371, pl. 40, figs. 1-5]
1933 Chlamys kiwaensis Powell, 1933
A. W. B. Powell, 1933, plate 40.
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«Shell of medium size, thin, suborbicular, compressed, equivalve, but with ears very unequal. Sculptured with rather distant, rounded, partly scabrous, strong radial ribs with fine radially striated interspaces. Colour of both valves dull-white, but with the radials of the left valve only marked out in brownish-pink. Beaks small, sharply pointed, approximate. Anterior ears large, twice the length of the posterior ones. Right valve with a broad fasciole; ctenolium broad and rather shallow, with four free teeth. Anterior ear of right valve with four scabrous radial ribs, that bordering the hinge-line being widest. Posterior ear of right valve with four evenly spaced and equally developed scabrous radial ribs. In the left valve there are eight anterior and three posterior scabrous radials. The disc is sculptured with 31 simple narrow radials which bear towards the margin sharp imbricating spines. Interspaces from three to five times width of radials, smooth to the eye, but really delicately sculptured with microscopic radial striae crossed by "Camptonectes"-like divarications. Ligamental pit small and shallow. Interior of shell dull white, with brownish-pink ribs showing through in right valve.
Height 33 mm.; width of valves 29.5 mm.; width of hinge-plate 16 mm.; thickness (two valves) 9 mm. (holotype). Holotype and three paratypes in Auckland Museum (Figs. 3, 4, and 5). The Tertiary Chlamys compitum (Marwick) from Chatton and Wharekuri is very similar to this new species, both having distant rounded scabrous simple radials without intermediate radials. The name of the species is based upon the Maori for the ocean —Te moana nui a kiwa— the great ocean of Kiwa.» ARTHUR WILLIAM BADEN POWELL, 1933
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«Veprichlamys kiwaensis is distinctive among pectinids from the NZEEZ in having pink radial ribs on a paler or white ground, and crisp, crowded radial sculpture in interspaces of all radial ribs. The rather weak, widely spaced scales on the radial ribs appear later on the centre of the disc than on the sides, typically when the shell is more than 15–18 mm high.»
DIJKSTRA, H. H. & B. A. MARSHALL. 2008. The recent Pectinoidea of the New Zealand region (Mollusca: Bivalvia: Propeamusiidae,Pectinidae and Spondylidae). Molluscan Research, 28 (1): 1-88, figs. 1-70. [p. 63]
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Veprichlamys kiwaensis (Powell, 1933).; H. H. Dijkstra & B. A. Marshal, 2008, The recent Pectinoidea of the New Zealand region, figure 51.
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«REMARKS. — The present specimen from Tonga is like the lype specimens of C. kiwaensis from New Zealand, although the sculpture of the Tongan specimen is somewhat different in having secondary radial ribs, which commence in the central part of the disc. These are lacking in the typical specimens. Other characters are similar. It is clearly a distinct species, but more material is needed in order to describe it. Veprichlamys kiwaensis has been recorded alive in New Zealandand New Caledonia in 366-1006 m (Dijkstra 1995: 85).»
DIJKSTRA, H. H. & P. MAESTRATI. 2008. New species and new records of deep-water Pectinoidea (Bivalvia: Propeamusiidae, Entoliidae and Pectinidae) from the South Pacific. In: V. Héros, R. H. Cowie & P. Bouchet (eds), Tropical Deep-Sea Benthos 25. Mémoires du Muséum national d'Histoire naturelle, 196: 77-113, figs. 1-55. Paris. [p. 108]
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Veprichlamys cf. kiwaensis (Powell, 1933); H. H. Dijkstra & P. Maestrati, 2008, New species and new records of deep-water Pectinoidea from the South Pacific, figures 50, 51.
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«REMARKS. — The present material from off New Caledonia is very similar to the type specimens of C. kiwaensis from New Zealand, although smaller (height 12 mm). The microscopic diverging striae between the radial costae ("Camptonectes" - like divarications of POWELL's description) are strongest near the antero-lateral margin in the present material, and absent near the ventral margin.
Related species are Veprichlamys jousseaumei Bavay, 1904 from southern Japan to Indonesia, V. perillustris from SE and S Australia, and V. incantata (Hertlein, 1972) from the Galapagos Islands. WALLER (1993: 236) mentioned also V. onzola (Olsson, 1964), a Neogene species from northwestern Ecuador. V. jousseaumei is slightly orbicular in shape, and has numerous radial costae (30-38). V. perillustris is more oblique, and has fewer radial costae (20-26), which are more strongly imbricated. V. incantata is larger (height up to ca. 55 mm), less obliquely oval, and sculptured with ca. 20 radial costae and interstitial radial riblets.» DIJKSTRA, H. H. 1995. Bathyal Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae, Pectinidae) from New Caledonia and adjacent areas. In: Bouchet, P. (Ed.), Résultats des Campagnes MUSORSTOM, Volume 14. Mémoires du Muséum national d'Histoire naturelle, 167: 9-73, figs. 1-154. [p. 58]
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Veprichlamys
kiwaensis; H. H. Dijkstra, 1995, Bathyal Pectinoidea from New Caledonia and adjacent areas, figures 119, 120. |
«This species was originally obtained attached to a telegraph cable 400 miles (644 km) west of New Plymouth in 600-700 fathoms (about 1100-1300 m) (Powell 1933) and has not been commented on since, although Dell (1956, p. 165) has recorded it from five stations in 100-700 fathoms (about 180-1300 m). Having been brought up on a cable, Chlamys kiwaensis evidently lives byssaIIy attached to hard objects. Although the situation of individual specimens in BS 292 was not recorded, specimens were subsequently collected (BS 300, Turakirae Trench, 350-360 fathoms, r.v. Acheron, 6 September 1972) bysally attached to Goniocorella dumosa. C. kiwaensis may be merely an unencrusted phenotype of a more common species such as C. gemmulata (Reeve).
The sample in BS 292 is a growth series from minute specimens, resembling adult Cyclopecten, up to shells 13 mm high. The "Camptonectes microsculpture" mentioned by PoweII (1933, p. 372) is prominent on minute specimens so that they strongly resemble the more finely sculptured species of Cyclopecten such as C. aupouria Powell, but the juvenile Chlamys can be readily distinguished from Cyclopecten by the large brownish-olive prodissoconchs.» BEU, A. G. & F. M. CLIMO. 1973. Mollusca from a recent coral community in Pallister Bay, Cook Strait. New Zealand Journal of Marine and Freshwater Research, 8 (2): 307-332. [p. 309]
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Veprichlamys kiwaensis (Powell, 1933); B. K. Raines & G. T. Poppe, 2006, A Conchological Iconography, The Family Pectinidae, plate 199, figures 1, 4-6.
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