Genus CODONŒCA James Clark '66.
(Kent '81.)
Small forms inclosed in cup or "house" of ovoid or goblet shape, colorless and probably gelatinous (chitin?) in texture, and borne upon a stalk. The monad does not completely fill the test. Contractile vacuole single, posterior.
Codonœca gracilis, n. sp. Fig. 8.
|
Fig. 8.— Codonœcea gracilis. [ ENLARGE ] |
![[ ENLARGE ]](#4444407870625710864_fig_08.jpg.id-5348742489490938947.wrap-0.html.html){kind=link}
The cup is urn-shaped with a well-defined neck or collar borne upon a shoulder-like end of the body. It is hyaline, colorless, and carried upon a stalk equal in length to the cup or shorter than this. The animal does not fill the cup, nor is it attached by a filament to the latter. There is a single flagellum. The nucleus is minute and lateral in position; the contractile vacuole is in the posterior end of the body. Total length of cup and stalk 21µ; of cup alone 12µ. This minute form looked so much like a choanoflagellate that I supposed it to be one until I discovered an empty case (Fig. 8).