Drawing

Description:

Syndetophyllum pulchellum (Leadbeater, 1974) Thomsen and Moestrup, 1983. Cell obovoid, 2 - 5 microns long x 2 - 4 microns wide, single flagellum approximately 15 microns long, funnel-shaped collar of approximately 20 tentacles 2 - 5 microns long. Lorica 6-8 microns high composed of two chambers. Anterior chamber consisting of 10 longitudinal costae and two transverse cos tae, one forming the anterior ring and one at the base of the chamber. Lower chamber formed by 10 longimdinal costae converging posteriorly. All costal strips forming the lorica broad with a thickened midrib with an elaborate pattern of perforations either side, costal strips of the anterior ring bearing an upright spine at one end.