Order Collothecacea.
Family Collothecidae.
Genus Collotheca Harring.

1. C. ambigua (Hudson).

Floscularia ambigua Hudson. 1883, p. 163. H.& G., 1886, vol. 1, p. 53, pl. 1, fig. 2.

Locality: Mt. Eden, Auckland; Hilgendorf, 1902, p. 267.

2. C. coronetta (Cubitt).

Floscularia coronetta. Cubitt. 1869. p. 133. H.& G., 1886, vol. 1, p. 49, pl. 1, fig. 5; pl. 2, fig. 2.

Locality: The Hutt, Wellington; Stock, 1892, p. 193.

3. C. cornuta (Dobie).

Floscularia ornata Dobie. 1849, p. 233. H.& G., 1886, vol. I, p. 51, pl. 1, fig. 7.

Locality: Victoria Lake, Christchurch.

Observations: Found amongst Myriophyllum, at temp. 17–20° C., pH 8–8.5. Fairly common. (C.R.R.) Not previously recorded in New Zealand.

4. C. ornata (Ehrenberg).

Floscularia ornata Ehrenberg. (for 1831), 1832, p. 146. H.& G., 1886, vol. 1, p. 50, pl. 1, fig. 9.

Localities: Lincoln; Hilgendorf, 1902, p. 267. Victoria Lake, Christchurch.