Translation 2816

42
B. Coverings (shells) represent a more or less strong armor, which
consists of dissimilar polygonal plates (panels). The armor is
membraneous during the juvenile phase, but the panels are already
visible at that time.
•
1. Colis are more or less roundish, without large corniform
formations on the anterior and posterior parts of the body.
(a) Shape is spherical, without apical aperture, only 1 antapical
plate present. Plate formula: 3'1a6"5"1".
Family: Dinosphaeraceae (P.251)
(b) Shape is spherical, ellipsoidal, ovoid or pyriform. Apical
aperture present or absent. One or two antapical plates are (158)
present.
ie Shape is usually ovato-rotundate. Shell is thin,
character of the panelling primitive: 2-4 1 4a8-7"7-6" 1 2".
Family:Glenodiniopsidaceae (P.158)
e Shape is more or less flattened in the direction
. .
of the longitudinal axis. Epivalve conical, apical
aperture present, usually one antapical plate
(rarely two). There is a crest beside the longitudinal
groove which often projects over the antapical
end. /01-2a7"5"1".
Genus: Diplopsalis, Family: Peridiniaceae (P.179)
3*Cel1s are spherical, ellipsoidal, ovoid or pyriform;
armor is thick.