Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 198, Figs. 1-4: Holocene, Atlantic. 1, 2, Off Culebra Island, east of Puerto Rico, longitudinal section, upper part enlarged, x 250, and entire specimen showing distinctly canaliculate wall and remnants of the projecting thin-walled lateral chamberlets, x 100; 3, 4, N. Atlantic, off Puerto Rico, side and apertural views of holotype, x 90 (1, 2, new figures; 3, 4, from Cushman, 1935).