602 Annals of the South African Museum. 



(Note. — Indeterminable species of JEuglena were encountered in 

 occasional other samples, but never in large numbers.) 



Genus LEPOCINCLIS Perty. 



1. Lepocinclis ovum (Ehrenb.), Lemmermann, op. cit., p. 134, fig. 

 216. 



Samples 14, 15. 



Long., 34//,; lat., 24-25 /x. 



Many of the specimens had a brownish periplast. The spiral ribs in 

 some of the individuals were not equally developed, but were alter- 

 nately thin and thick. 



Var. globula (Perty), Lemmermann, op. cit., p. 134. 

 Samples 12, 13. 

 Long., 27 /x; lat., 20 /x. 



Genus PHACUS Dujardin. 



1. Phacus longicauda (Ehrenb.), Duj.; Lemmermaim. op. cit., p. 

 138, fig. 235. 



Sample 14. 



2. Phacus pleuronectes (0. F. M.), Duj. ; Lemmermann, op. cit., 

 p. 138, fig. 236. 



Sample 14. 



3. Phacus brevicaudata (KlebsJ, Lemmermann, op. cit.. p. 139, 

 fig. 232. (Fig. 42, C.) 



Samples 12 and 13. 



Long., 30-31 /x ; lat., 27 //. All the individuals were broadest near 

 the back end, the. outline of which appears flattened or slightly 

 concave. From its middle arises a very short spinous prolongation. 

 which is bent towards one side. The dorsal fold can be traced right 

 to the posterior end of the cell. The periplast exhibits rather faint 

 longitudinal striation. In the vast majority of the individuals there 

 are two parauiylon-grains, lying one on either side of the dorsal fold, 

 the one generallv considerably larger than the other. 



Genus TEACHELOMONAS Ehrenberg. 



1. Trachelomonas volvocina, Ehrenb.; Lemmermann, op. cit., -p. 145, 

 fig. 246. 



Forma typica. 



