662 Fritsch . — Two Fungi , parasitic 
branched, forming numerous large thin-walled spores (diam. 
12-15^), generally in a chain on lateral branches. Infecting- 
hyphae abundant. Endophytic mycelium rarely branched. 
Zoospores not observed. In the filaments of Tolypothrix , sp. 
It only remains for me to acknowledge the kind assistance 
of a friend in the preparation of the figures for this paper. 
University College, London. 
March 6, 1903. 
References to Literature. 
Dangeard (’90) : Recherches histologiques sur les Champignons. Le Botaniste, 
2 e ser., 1890-1, pp. 96-9, PI. IV, Figs. 24-31. 
Fischer (’92) : Rabenhorst’s Kryptogamenflora v. Deutschland, Oesterreich u. der 
Schweiz. Erster Band, 4. Abtheilung, Phycomycetes, 1892. 
Lemmermann (’01): Die parasitischen u. saprophytischen Pilze der Algen. Abh. 
Nat. Ver. Brem., 1901, Bd. xvii, Heft 1, pp. 185-202. 
Pfitzer (’72) : Ancylistes Closterii , ein Algenparasit aus der Ordnungder Phyco- 
myceten. Monatsber. der Konigl. Acad. d. Wissensch. zu Berlin, 
1872, p. 379. 
Schroter (’93) : in Engler-Prantl, Natiirl. Pflanzenfam., 1. Teil, 1. Abtheilung, 
1893, p. 92. 
