i Myxophyoese, Genera incerta, Asterotlirix. 



Hab. ia Batrachosper mo monili formi in Anglia meri- 

 dionali CW. et G. S. West), in ins. «Chatam» ad oras lacus 

 «Huro» et in lacuna (Schauinsland). 



Genera incerta. 



HOMALOCOCCUS Kuetz. [1863] Osternprogr. p. 6, n. 3 (Etym. homalos 

 levis, sequalis et coccos granum), Coccochloridis sp. Hass. — Phy- 

 coma (globosum) gelatinosum ; celluhTe internre in corpuscula plana, 

 oblonga, irregularia conjunctae. 



1. Homalococcus Hassallii Kuetz. Osternprogramm 1863, p. 6, n. 3, 1537 

 Coccochloris hyalina Hassall Freshw. Alg. p. 315, tab. LXXVIII, 

 fig. 2 « et & (?) excl. synon., Rab. Fl. Eur. Alg. II, pag. 69. — 

 Phycomate globoso, molli, viridi, magnitudine pisi vel nucis Avel- 

 lanse, cellulis leptodermaticis rotundo-angulatis 13-15 [x. diam. 



Hah. in stagnis Normandia^ (Lebel) et Angliae? (Jenner). — 

 Si icon in Cool^e Br. Freshw. Alg. t. 88 excusa Ho7nalococcum 

 rite repra3sentat, vix hoc genus Myxophyceis adscribendum est. 



ENTOTHRIX Kuetz. [1843] Phyc. gener. p. 224 (Etym. entos intus et 

 thrix pilus). - Thallus tubulosus e trichomatibus tenuissimis, nu- 

 merosissimis, in funiculum dense contortis, vagina inclusis, com- 

 positus. 



1. Entothrix funicularis Kuetz. loc. cit. p. 224, tab. V, fig. 8, Tab. 1538 

 phyc. I, tab. 72, Rab. Fl. Eur. Alg. II, p. 160. — Aquatica, fusca; 

 trichomatiV)US inarticulatis, hyalino-hitescentibus 1,5 [x. crassis, 

 flexuosis; vagina crassa, lamellosa, fuscescenti. 



Hab. in aqua diu asservata (Kuetzing). — Hsec species forsan 

 Myxophyceis non est adscribenda. Eritothrix grandis Wolk:) in 

 Bull. Torrey Bot. Club 1877, p. 183 est Lemanea grandis (Wolle) 

 Atkins. 



ASTEROTHRIX Kuetz. [1843] Phyc. gener. p. 200 (Etym. asier stella, 

 thrix pilum). — Fila indistincte articulata, rigidissima, cruciatim 

 ramosa, nuda, utrinque acute cuspidata, medio genuflexa. Propaga- 

 tio iricognita. 



Obs. species in aqua dulci libere natantes vel adh;i3rentes. 



