Entogonia ambercrombieana from Barbados (can’t read the word in “”). Single example on the slide. Slightly tilted downwards towards the top. Very orange mountant (made using 450nm light tricky – long exposure times). Prepared by John Andrew Shulze, Philadelphia. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 45 images stacked in Pmax.
Entogonia abercrombieana Schmidt in Schmidt et al., 1885. Original description: Schmidt, A. (1885). Atlas der Diatomaceen-kunde. Aschersleben, Commissions-Verlag Von Ludwig Siever’s Buchandlung, Series III(Heft 21-22): pls. 81-88. Plate 88, Figure 7.
Entogonia abercrombieana (Greville) Greville 1863. Published in: Greville, R.K. (1863). Descriptions of new and rare diatoms. Series X. Quarterly Journal of Microscopical Science, Series 2 3: 227-237, pls IX, X. Page 235 (as ‘Abercrombiana‘).
Also see: Holmes, R.W. & Brigger, A.L. (1979). The marine fossil diatom genus Entogonia Greville – A review. Bacillaria 2: 155-214, 14 plates.