. Bulletin of the British Museum (Natural History), Geology. SYSTEMATICS OF MELICERITITID CYCLOSTOME BRYOZOANS 79 median bar, raised above general level of frontal surface so that plane of aperture slopes slightly downwards in a distal direction. Operculum (Fig. 227) usually preserved in-situ, surface a little convex, pseudopores apparently absent. Intra- mural buds and terminal diaphragms not observed. Eleozooids absent. Kenozooids (Fig. 229) mainly developed at overgrowth origins and where growing edges from different overgrowths anastomose (Fig. 228), occasionally present elsewhere inter- s
. Bulletin of the British Museum (Natural History), Geology. SYSTEMATICS OF MELICERITITID CYCLOSTOME BRYOZOANS 79 median bar, raised above general level of frontal surface so that plane of aperture slopes slightly downwards in a distal direction. Operculum (Fig. 227) usually preserved in-situ, surface a little convex, pseudopores apparently absent. Intra- mural buds and terminal diaphragms not observed. Eleozooids absent. Kenozooids (Fig. 229) mainly developed at overgrowth origins and where growing edges from different overgrowths anastomose (Fig. 228), occasionally present elsewhere inter- spersed among autozooids. Gonozooids unknown. Measurements. autozooids (10 zooids with in-situ opercula from holotype BMNH D52565) frontal length: mean = 0-72 mm; SD = 0-055 mm; CV = 7-6; range = 0-66-0-81 mm frontal width: mean = 0-29 mm; SD = 0-019 mm; CV = 6-7; range = 0-26-0-32 mm apertural length: mean = 0-17 mm; SD = 0-009 mm; CV = 5-6; range = 0-15-0-18 mm apertural width: mean = 0-13 mm; SD = 0005 mm; CV = 3-6; range = 0-12-0-14 mm Remarks. This is the earliest known species of Reptomulte- lea, and the only species of the genus recorded from the Lower Albian. Only one specimen is known but this is sufficiently different from other species of the genus to warrant recognition as a new species. The absence of eleo- zooids is best interpreted as a primary characteristic of the species rather than an artefact of small sample size because eleozooids are not developed in areas of anastomosis, where zooid crowding and disruption of the normal budding pattern might be expected to favour their presence. R. matutina differs from the somewhat similar R. oceani (d'Orbigny) in lacking eleozooids and in having slightly smaller autozooidal apertures. Distribution. Lower Albian of Bedfordshire, England. Reptomultelea mitrus sp. nov. Figs 230-234 Material. Holotype: BMNH D14468, Cenomanian [prob-. Figs 230-233 Reptomultelea mitrus sp. nov. 230, 231, BMNH D14468, holotype, Cenomanian, Beer
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