[See further Jennings, Bull. Mus. Harvard, xxx. 1896, p. 1; Erlanger and Lauterborn, Zool. Anz. xx. 1897, p, 452; and Lenssen, Zool. Anz. xxi. 1898, p. 617.]
It does not appear to us that Zelinka is justified by his account of the development in regarding this cup as other than a part of the disc.
The classification we have adopted is a modification of that made by Hudson and Gosse; we have divided up their first Order Rhizota into two, and split off from Flosculariidae the family Apsilidae; removed the Asplanchnaceae from the admittedly heterogeneous Order Ploima, made distinct families in the Ploima for Microcodonidae and Rhinopidae, and created a third new Order for the Seisonaceae. Ehrenberg, Gosse, and Hudson, being the authors of most of the genera, are designated by their initials only.
This second species has also been found in the Northern United States.
This Order has been monographed recently by Janson in Abh. Ver. Brem. Bd. xii. Beilage, 1893, p. 1.