. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 189 (Nautilus beccari perversus). However, no ventral view was given by them, or later by Montagu (1803) or Brown (1844). In any case through long disuse the name should lapse as a nomen oblitum. Distribution. As this species has been confused with A. beccarii for a long period its distribution remains to be worked out. It is undoubtedly widely distri- buted around the coasts of the British Isles and in the North Sea. It has been well figured by Murray from Plymouth (1965a) and in additi
. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 189 (Nautilus beccari perversus). However, no ventral view was given by them, or later by Montagu (1803) or Brown (1844). In any case through long disuse the name should lapse as a nomen oblitum. Distribution. As this species has been confused with A. beccarii for a long period its distribution remains to be worked out. It is undoubtedly widely distri- buted around the coasts of the British Isles and in the North Sea. It has been well figured by Murray from Plymouth (1965a) and in addition Parker (1952) and Todd & Low (1961) figure specimens that may belong to it from the eastern seaboard of N. America. Streblus limnetes Todd & Bronniman, 1957 : 3 8, pi- 10> figs 4a~c. Rotalia beccarii (Linne) var. sobrina Parker, 1952b : 457, pi. 5, figs 7a, b (not Shupak). 'Rotalia' beccarii (Linne) variant C, Parker, Phleger & Peirson, 1953 : 13, pi. 14, figs 29-30. Diagnosis. A thin walled, compressed Ammonia with flattened dorsal side and six to seven chambers visible on the ventral side with subangular to subround lobes filling the umbilicus. Description. (Test-fig. nos 1-3.) Test with last chamber broken off; compressed with flattened, evolute dorsal side and slightly raised, involute ventral side, periphery rounded and only slightly lobate in outline; chambers 17, arranged in a very low trochospire and increasing slowly in size as added, 6:7: 3— in each whorl following the proloculus, becoming longer than high and lunate in the second whorl as seen in dorsal view; sutures flush on the smooth dorsal side; six chambers visible in ventral view with subrounded lobes filling the umbilicus, sutures impressed and deeply fissured towards the umbilicus, excavated behind the prominent lobes; the last chamber is broken so the typical ventral, basal and umbilical aperture is not seen but the oval, areal foramen of the previous apertural face is revealed; wall radi
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