490 



Annals of the South African Museum. 



Eudorina, 491 

 Eudorinella, 492 

 Euglena, 600 



Eunotia, 585 



Frustulia, 588 



Gloeocapsa, 570 

 Gloeotrichia, 581 

 Gomphonema, 594 

 Gomphosphaeria, 571 

 Gongrosira, 535 

 Gyrosigma, 594 



Pandorina, Id J 

 Pediastrum, 505 

 Penium, 542 

 Peridinium, 605 

 Phacus, 602 

 Phormidium, 573 

 Pinnularia, 590 

 Pleurococcus, 514 

 Pleurosigmaj 594 

 Pleurotaenium, 517 



Rhaphidium, 514 

 Rhizoclonium, 521 

 Rivularia, 58] 



Hantzschia, 5'.)'.) 

 Herposteiron, 536 

 Himantidium, 5S(i 

 Hormidium, 519 

 Hydrodictyon, 505 



Lepocinrlis, 602 

 Lyngbya, 573 



Mastogloia, 5S7 

 Melosira, 584 

 Merismopedia, 57 1 

 Mesotaenium, 540 

 Microcystis, 57* > 

 Microspora. 523 

 M icri ithanmion, 53 1 

 Mougeotia, 568 

 Myxonema, 531 



Navicula, 588 

 Neidium, 588 

 Netriuin, 541 

 Nitzschia, 596 

 Nitzschiella, 599 

 Nodularia, 577 

 Nostoc, 577 



I (edogonium, 539 



Oocystis, 506 

 Ophioeytium, 569 

 Oscillatoria, 572 



Scenedesmus, 506 

 Schizochlamys, 503 

 Schizothrix, 575 

 Sciadium, ."iti'.t 

 Scytonema, 580 

 Selenastrum, 512 

 Sphaerocystis, 5( >2 

 Sphaeroplea, 52 1 

 Spirouryra 3 563 

 Spirulina, 572 

 Spondylosmm. 562 

 Staurastrum, 560 

 Stauroneis, 594 

 Stichococcus, 519 

 Stigeoclonium, 531 

 Stigonema, 58] 

 Surirella, 600 

 Synjedra, 5S5 



Tolypothrix, 58 L 

 Tracheloinonas, 602 

 Tribonema, 569 

 Trochiscia, 505 

 Tryblionella, 596 



Ulothrix, 515 



Vanheurckia, 588 

 Vaucheria, 540 



Xanthidium, 559 



Zygnema, ;"64 



