Translation 2816

F5
1. Both valves are 6f appreximately equal size.
0ACe1ls are n et, or are only slightly, flattened
(168)
dorsiventrally. The eoivalVe iSY#eakly ovoid-
- cuspidate and rcunded, the hypovalve
hemispherical* There is red coloration of the cells
on exposure to light. .al. ganguineum 1.
PCells are distinctly flattened dorsiventrally;
ventral s ide is flat Or Concave. The epivalve is in
the shape of a pointed arch, the hypovalve is more
rounded. 01, umnodinium 2.
2. Valves of unequal size, epivalve larger than hypovalve.
0Epivalve half-oval, nucleus ad hippocrepiform stigma _ _
(?) in the epivalife; Ihe hjpovalve is hemipherical.
• (Independence doubtful). - Gl. Stéinii 3.
p)The epivalve iA truncatedly convexo-conical, the hypovalve
smoothly rOunded and with a short spine to the
left of the antapical end . GI, prmatum 4.
W)The epivalve iâ CuSpidaté in the shape of a short cone,
the hypovalve shallowly rounded. Stigma uncertain.
• Brackish water forme Gli ILP.11. 11MU 5.
(b) Without stigma,
1. Both valves the same size.
oc) Both valves hemiSpheriCal Gl. Lemmermanni 6.
M
Both valves csmpanulate. GI. mllisculus 7.