NELLIE CARTER : FRESHWATER ALGA. 57 
MERJDIONACE A. 
PERONIA ERINACEA Bréb. et Arn., forma. (Text-fig. 1, A.) Forma valvis 
a fronte visis non apice rostrato-capitatis, pseudoraphe vix conspicua. 
Ouendjam Forest. 1986. Very abundant amongst other diatoms in slowly 
running stream. 
EUNOTIACE. 
EUNOTIA PRÆRUPTA Ehrenb. Canala ; in stagnant pool. 1358. 
E. LUNARIS Grun. Rivière du Carénage ; amongst filamentous alge. 
384, Plaine des Lacs; in shallow rain pools. 338. Ouendjam Forest; in 
slowly running stream, 1986, 
E. ınpressa Ehrenb. Plaine des Lacs ; in shallow rain pools. 338. 
E. PECTINALIS Kütz. (Canala; in washings of Lemna sp. 1357. 
Ouendjam Forest; in slowly running stream. 1986. 
E. SoLeroLtu Rabenh. Mont Humboldt; in rock pools. 1045a. Only 
a single example of this species was noticed. 
E. vENTRALIS Ehrenb. Ouendjam Forest; in slowly running stream. 
1986. 
E. picaprrara Grun. Rivière du Carénage; amongst other alg in 
stream. 384. 
ACHNANTHACEE. 
ACHNANTHES MICROCEPHALA Kütz. River Dumbéa ; amongst filamentous 
alge. 808, 809. Mont Humboldt ; amongst Blue-green alge in rock pools. 
1045 a. Europe. 
À. HUNGARICA Grun. Canala; in washings of Lemna sp. 1357, 
Europe. 
À. TRINODIS Arn. River Dumbéa ; amongst filamentous alge in rock 
pools. 808, 809. Europe. 
A, LANCEOLATUM Grun. Ouendjam Forest; in slowly running stream. 
1986. Europe, Australia, New Zealand, India, America. 
A. INFLATA Grun., var. SMITHIANA Grev. Ouendjam Forest, in slowly 
running stream. 1986. New Hebrides, Africa. 
COCCONEIDACE. 
CoccoxEIS PLACENTULA Ehrenb. Canala ; on dead leavesin pool. 1358. 
Ouendjam Forest; in slowly running stream. 1986. Europe, New 
Zealand, America. 
