Genus OXYRRHIS Duj.
(Kent '81; Bütschli '86; Klebs '92; Senn 1900.)
Medium-sized forms, somewhat oval in shape, with a rounded posterior end. The anterior end is continued dorsally in a somewhat attenuate pointed process. At the base of this process is a large cavity or funnel, on the dorsal wall of which, or on a projection from this wall, are two equal-size flagella. When at rest, the flagella are directed backwards. The nucleus is central. In moving, the posterior end is invariably in advance. This genus is exceptional among Mastigophora in that division is transverse instead of longitudinal.
Oxyrrhis marina Duj. Fig. 15.
With the characters of the genus. Contractile vacuole not seen. Length 28 to 40µ.
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Fig. 15.— Oxyrrhis marina. [ ENLARGE ] |
![[ ENLARGE ]](#4444407870625710864_fig_15.jpg.id-2280051903468226608.wrap-0.html.html){kind=link}