Haumea Dall, Bartsch & Rehder, 1938
DALL, W. H., P. BARTSCH & H. A. REHDER. 1938. A manual of the Recent and fossil marine pelecypod mollusks of the Hawaiian Islands. Bernice P. Bishop Museum Bulletin, 153: i-iv, 1-233, pls. 1-58. [p. 86]
«Genus HAUMEA, new genus
Shell of medium size, somewhat obliquely suborbicular, only slightly inflated, moderately thin, right valve white, left valve colored, usually mottled with red; wings subequal, posterior ones slightly larger, byssal sinus moderately deep, without comblike denticles on lower border. Sculpture consists of strong regular radial ribs, crossed by very fine crowded concentric threads, usually more or less effaced on top of the ribs. Interior of right valve, white, of left valve, mottled or suffused with red.
Type: Haumea juddi, new species.»
WILLIAM HEALEY DALL, PAUL BARTSCH & HARALD ALFRED REHDER, 1938
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Haumea juddi; W. H. Dall, P. Bartsch & H. A. Rehder, 1938, A manual of the Recent and fossil marine pelecypod mollusks of the Hawaiian Islands,plate 22, figures 1-4.
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Pecten loxoides, sp. nov; G. B. Sowerby II, 1882, Descriptions of new species of shells in the collection of Mr. J. Cosmo Melvi, plate 5, figure 13.
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«Haumea Dall, Bartsch & Rehder, 1938
Haumea Dall et al., 1938: 86. Type species (by original designation): Haumea juddi Dall et al., 1938 (= Pecten loxoides G. B. Sowerby II, 1882); Recent, Hawaiian Islands.
Diagnosis. Small Aequipectinini of circular to prosocline shape, both valves convex, right valve the more convex in most specimens; macrosculpture of narrow, evenly spaced radial plicae and delicate, closely spaced, commarginal lamellae throughout ontogeny of most specimens; auricles relatively narrow; internal rib carinae present; hinge teeth broad and prominent, anterior resilial tooth prominent, posterior weak; byssal notch deep, ctenolium well-developed.
Distribution. ?Pliocene, Kenya (Cox, 1930); Pleistocene–Recent. Indo-West Pacific, living in the littoral to sublittoral zones.
Discussion. Hertlein (1969: N357) treated Haumea as a junior synonym of Argopecten Monterosato, 1889, a subgenus of Chlamys, as did Vaught (1989: 118), placed in the suprageneric Chlamys group by Hertlein, and in the subfamily Chlamydinae (i.e., Pedinae) by Vaught.
Haumea is considered here to be an extant Indo-Pacifc genus, differing morphologically from the extant eastern Pacific and western Atlantic genus Argopecten in its smaller size, its more strongly prosocline shape (more elongate to circular in Argopecten), its smaller auricles, its more closely spaced interstitial commarginal lamellae, its very weak or lacking interstitial radial microsculpture (more prominent between the commarginal lamellae in Argopecten), its more prominent internal rib carinae, and its weaker dorsal teeth (very prominent in Argopecten). These characters indicate that Haumea is related to Aequipecten, Argopecten, and Cryptopecten, which are also all included in Aequipectinini (see Waller, 1991, 1993).» 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. 303]
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