64 PLANTS FROM NEW CALEDONIA. 
CLosTERIUM PSEUDODIANÆ Roy. Canala; in washings of Azolla sp. from 
roadside ditch. 1359. Europe, Ceylon, Madagascar, E. Africa. 
CO. Venus Kütz. Canala; in washings of Azolla sp. from roadside ditch. 
1359. Europe, China and Japan, India, Malaya, New Zealand, Africa, 
America. 
C. LEIBLEINII Kütz. Ouendjam Forest; in slowly running stream. 1986. 
Europe, Japan, India, Australia, Africa, America. 
C. MONILIFERUM (Bory) Ehrenb. Ermitage Stream. 176. Canala; in 
stream, in stagnant pool, and in ditch, 1356, 1357, 1359. Europe, China 
and Japan, Ceylon, New Zealand, Africa, America, Forma INTERMEDIA 
Gutw. Canala; in ditch. 1359. Europe. 
C. EnnENBERGII Menegh. Canala; in stream and ditch. 1856, 1359. 
Ouendjam Forest; in slowly running stream. 1986. Europe, China and 
Jupan, India, Malaya, New Zealand, Africa, America. 
C. AcEROSUM (Schrank) Ehrenb. | Ouendjam Forest ; in slowly running 
stream. 1986. Europe, Siberia, China and Japan, India, Malaya, Australia, 
New Zealand, America. 
C. PERACEROSUM F. Gay. Canala; in washings of Azolla in ditch. 1359. 
France, W. Africa. 
C. KurziNan Bréb. Canala ; in pond and in ditch, 1357,1359. Europe, 
India, Malaya, Australia, New Zealand, C. Africa, America. 
C. compactum Nordst. Plaine des Lacs; in shallow rain pools. 338. 
New Zealand. 
PLEUROTÆNIUM MAXIMUM (Reinsch) Lund. Plaine des Lacs. 338. 
Europe, Ceylon, Malaya, Africa, America. Forma cellulis gracilioribus. 
Long. cell. 720 u ; lat. 830. Canala; in ditch. 1359. 
P. BASIUNDATUM W.& G.S. West. Canala ; inditch. 1359. Madagascar, 
Australia. The form was similar to that figured by Borge (Austral. Süss- 
wasserchlorophyceen, 1894, p. 26, t. 3, £. 46). The original figure of West 
does rot show any apieal nodules, whilst that of Borge does. In the New 
Caledonian specimens the nodules were small and not conspicuous, but they 
could usually be distinguished. The basal inflation of the semicell was also 
smaller than that figured by West. 
P. SUBGEORGICUM Cushman in Rhodora, 1905, p. 117. Canala ; in ditch. 
1859. United States. The apical tubercles were not constantly present, but 
were sometimes quite distinct. 
