88 MR. G. $, WEST ON THE FRESHWATER ALG 
Species. 
Nyasa. 
Victoria 
Nyanza. 
Tan- 
ganyika. 
| ' 
| CHLOROPHYCE (continued). 
| Ankistrodesmus aleatus, (Corda) Ralfs, var. spirilli- 
formis, G. S. West. 
Bacillariez. 
| Melosira granulata, Ralfs, var. angustissima, O. Müll. . 
| „ nyassensis, О. Mull....................... 
| Cyclotella Kützingiana, Chauvin .................. 
» operculata, Кїїл......................... 
» compta, (Ehrenb.) Ки. '................ 
| Stephanodiscus Astrea, (Ehrenb.) Grun. ............ 
| » » Var. spinulosus, Grun......... 
| ” ” var. minutulus, (Kütz.) Grun.. . 
| Synedra Acus, Kiitz. ............................ 
| » » Var. delicatissima, (W. Sm.) Grun. .... 
| » » уат.Р (=5. revaliensis, Lemm.) ...... 
»  acinastroides, Lemm. .................... 
| Cocconeis Pediculus, Ehrenb. ...... DEEP 
| » Placentula, Erhenb. .................... 
Navicula Tanganyike, 8р. | CP 
| » elliptica, Kiitz........................... 
» Pupula, Kütz. .......................... 
» mutica, Kütz. .......................... 
» Crucicula, (W. Sm.) Donkin ............ 
» bahusiensis, Grun. ...................... 
» radiosa, Kütz. .......................... 
» distincta, P D. ...................,,.... 
Gastrum, Ehrenb. ...................... 
| » Cistula, (Ehrenb.) W. Sm., var. maculata, 
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