From Fensome et al., 2019:
Aprobolocysta eilema, eilema Duxbury, 1977, p.52–53, pl.14, figs.4–5,8; text-figs.19A–B.
Holotype: Duxbury, 1977, pl.14, figs.4–5; text-fig.19B; Pourtoy, 1988, pl.3, figs.1–3,5–6; Fensome et al., 1993a, figs.1–2,5 — p.1139.
Originally (and now) Aprobolocysta, subsequently Necrobroomea. Lentin and Williams (1993, p.31) retained this species in Aprobolocysta. NIA.
Age: late Hauterivian.

Locus typicus: Speeton, England

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Original description: [Duxbury 1977, p. 53]:

Diagnosis:
An elongate ovoidal proximate cyst. Epitract longer and more tapering than hypotract. Endophragm densely granular. Periphragm relatively delicate, finely perforate, usually extensively folded and enclosing the inner body loosely. The cingulum is reflected in a high undulating periphragm fold. A second high periphragm fold runs from the reflected cingulum to the antapex. No tabulation is apparent except along the margin of the apical archeopyle.

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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.

Aprobolocysta eilema Duxbury, 1977, is an elongate ovoidal proximate cyst. The epicyst is longer and more tapering than the hypocyst. The endophragm is densely granular. The periphragm is relatively delicate, finely perforate, usually extensively folded and encloses the endocyst loosely. The cingulum is reflected in a high undulating periphragm fold. A second high periphragm fold runs from the cingulum to the antapex. No tabulation is apparent except for the margin of the archeopyle.
Size: complete specimen overall 66-75 by 38-48 µm.