the rotifera

Division II.
Foot transversely wrinkled, wholly retractile, furcate or ending in a ciliated cup;
sometimes absent.
Fam. 17. Pterodinadce (PI. C. fig. 9).
Lorica greatly depressed, entire, of two nearly equal plates, soldered together at the
edges; corona and ciliary wreath those of the Philodinadce; trophi malleo-ramate 1 ;
foot ending in a ciliated cup.
Fam. 18. Brachionidce (PI. C. fig. 8).
Lorica depressed, entire, dorsally arched, generally armed with anterior and posterior
spines ; corona transverse with styligerous prominences ; ciliary ivreath single, marginal,
fringing the buccal orifice ; trophi malleate 1 ; foot furcate, or absent.
Order IV.
SCIRTOPODA.
That sivim with their ciliary ivreath, and skip with Arthropodous limbs; foot replaced
by two dorsal, stylate, unconnected appendages, ending in ciliated expansions.
Fam. 19. Pedalionidce (PI. C. fig. 11).
Corona truncate; ciliary wreath a marginal continuous curve, bent on itself at the
dorsal surface, so as to encircle the corona twice, with the buccal orifice between its
upper and lower curves; having also two gaps, the one dorsal between its points of
flexure, and the other a ventral gap in the upper curve opposite to the buccal orifice;
trophi malleo-ramate. 1
The further subdivision of each family into genera will be given with the description
of that family.
•
1 For description of these technical terms, see pp. 28, 29.
http://rcin.org.pl