. Bulletin of the British Museum (Natural History), Geology. . 71 i'ig. 19 Gilbertsonia gibbosa (J. de C. Sowerby). Lower Carboniferous, Visean. Figs 19a-c, 'Queen's County' (= County Laois), Ireland; BM 43056, holotype;) Fig. 19a, top; Fig. 19b, left side; Fig. 19c, bottom; all xll. Figs 19d-e, Kildare, Ireland; BM L231, Tennant Collection; Fig. 19d, right side; Fig. 19e, top; both Xl. Fig. 19f, ?Bolland, Yorkshire; BM 97200, Gilbertson Collection, slightly oblique view of anterior of left valve showing anterior adductor; x 1-5. Fig. 19g, Kildare, Ireland, BM L47930, right side, with posterio
. Bulletin of the British Museum (Natural History), Geology. . 71 i'ig. 19 Gilbertsonia gibbosa (J. de C. Sowerby). Lower Carboniferous, Visean. Figs 19a-c, 'Queen's County' (= County Laois), Ireland; BM 43056, holotype;) Fig. 19a, top; Fig. 19b, left side; Fig. 19c, bottom; all xll. Figs 19d-e, Kildare, Ireland; BM L231, Tennant Collection; Fig. 19d, right side; Fig. 19e, top; both Xl. Fig. 19f, ?Bolland, Yorkshire; BM 97200, Gilbertson Collection, slightly oblique view of anterior of left valve showing anterior adductor; x 1-5. Fig. 19g, Kildare, Ireland, BM L47930, right side, with posterior adductor PA, and pallial line without pallial sinus PL. 1885 Sanguinolitesportlocki de Koninck: 82; pi. 16, fig. 11. 1885 Chaenomya requiana (de Rychholdt); de Koninck: 7; pi. l,fig. 11. 1900 Sanguinolites luxurians de Koninck; Hind: 402^1; pi. 46, figs 3-5. Holotype. BM 43056 is the figured and only known lype specimen; from the Lower Carboniferous of 'Queen's bounty' (= County Laois), Ireland. "ypes of Sanguinolaria tumida Phillips. The specimen figured â y Phillips (1836: pi. V, fig. 3) has not been discovered p the Phillips collection at Oxford nor in the Gilbertson jollection at the BM(NH). Phillips said his figure was educed from a large Irish specimen. Specimens from the |jilbertson collection listed as S. tumida in the Gilbertson Catalogue, but not labelled as such by Phillips and not belonging to the species as here understood (that is, not belonging to the same species as illustrated by Phillips), are not accepted here as syntypes. These include BM 97164 belonging to the species here recognized as Myofossa omaliana de Koninck (p. 63). Other material: BM L231 from the Carboniferous Limestone of Kildare, Ireland; Tennant Collection, Fig. 19d-e (Hind identified this specimen as S. luxurians). BM 97187 ( in Gray Catalogue; 92g in Gilbertson Catalogue; Isocardia sp.; Phillips MS: pi. 5b, fig. 34; see below). BM 3o937, Carboniferous Limestone, Clane, Kilda
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