Genus CODONOSIGA (Jas. Clark '67).

(Bütschli '78; Kent '81; Francé '97; Senn 1900.)

This genus, as modified by Francé, is distinguished from the
preceding by the possession of an unbranched stalk much longer than
the body length. The body is naked and of various shapes, and the
individuals are solitary or colonial upon a single stalk. Kent '81
enumerates no less than 10 species, which were cut down by Bütschli
to 1. Francé admits 4--_C. botrytis_ Jas. Clark; _C. grossularia_;
_C. pyriformis_, and _C. furcata_, all S. Kent--but regards the
second and third as merely form varieties of the first.


Codonosiga botrytis (Ehr. sp.) Jas. Clark '67. Fig. 12.

Francé gives the following synonyms: _Epistylia botrytis_ Ehr.;
_E. digitalis_ Stein, _Zoothamnium parasitica_ Stein; _Anthophysa
solitaria_ Fresenius; _Codonosiga pulcherrima_ Jas. Clark; _Monosiga
gracilis_ S. Kent; _M. globulosa_ S. Kent; _Codonosiga pyriformis_
Kent; _C. grossularia_ Kent; (Francé).

The individuals are small and provided with a long unbranched, or
terminal, simply split stalk. The individuals are single or colonial.
The Woods Hole form measured 22µ over all; the body was 5µ, the
collar 3µ, and the stalk 14µ. No colonies were seen, and only a few
individuals upon red algæ.