. Bulletin of the British Museum (Natural History). Zoology . 94 J. R. HAYNES Lagena species A (PI. 12, figs 3, 4) Description. Test pear-shaped with rounded base and tapering summit, greatest width towards the base, round in section; with fine, longitudinal striae on the lower third of the test, apparently not reaching the base; neck wide, tapering, broken off. Dimensions. Length o-20 mm, breadth o-n mm. Material. One specimen only. Depository. () 1970 : n : 26 : 637. Provenance. Described specimen, CB 528. Remarks. This specimen resembles L. laevis but is more pear-shape
. Bulletin of the British Museum (Natural History). Zoology . 94 J. R. HAYNES Lagena species A (PI. 12, figs 3, 4) Description. Test pear-shaped with rounded base and tapering summit, greatest width towards the base, round in section; with fine, longitudinal striae on the lower third of the test, apparently not reaching the base; neck wide, tapering, broken off. Dimensions. Length o-20 mm, breadth o-n mm. Material. One specimen only. Depository. () 1970 : n : 26 : 637. Provenance. Described specimen, CB 528. Remarks. This specimen resembles L. laevis but is more pear-shaped with wider neck and is faintly striate towards the base. Lagena orbignyana (Seguenza) var. elliptica Cushman, 1923 : 42, pi. 6, figs 10-12 Diagnosis. An elongate, three keeled species of Fissurina with elliptical central part and produced, narrow, only slightly everted aperture. Description. Test unilocular, subglobular with rounded base and produced rather narrow aperture, slightly compressed body chamber, strongly compressed at the aperture, greatest width below midpoint; wall radial, lamellar and densely perforated with fine pores; aperture truncating the produced apical end, an elongate slit with rounded lip, slightly everted but not at the sides, with long flaring ento- Family POLYMORPHINIDAE d'Orbigny, 1839 Genus FISSURINA Reuss, 1850 Fissurina elliptica (Cushman) (PI. 14, fig. 5 J Text-fig. 19). Fig. 19. Fissurina elliptica, apertural Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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