38 Synopsis of the Bacteria and Yeast Fungi. 

 In sulphur springs. 



In Wartmann and Schenk's " Schweiz. Kryptog.," No. 639, this 

 species is published under the name of Symphyothrix nivea, Briigger. 

 Both the names given above are cited as synonyms, but only pro parte. 

 From the label attached I extract the following observations : — " Threads 

 inarticulate and motionless, only ^'55 to ji^j'" thick {='S-1'3 !>■), parallel 

 and much entangled, in penicillate tufts, strings, and sheaves of very 

 unequal size, which are surrounded by a common, homogeneous, colour- 

 less gelatine." 



52. B. leptomitiformis (Meneghini), Trevisan ("Flor. 



Eug.,» p. 56). 

 Oscillaria leptomitiformis, Meneghini. 

 Threads very slender, indistinctly jointed, about i "8-2 -5 fi. 

 thick, forming a thin chalk-white slimy layer. (Fig. 29c.) 

 In sulphur springs. 



53. B. araehnoidea (Agardh), Rabenhorst ("Flor. 



Eur. Alg.," ii. p. 94). 

 Oscillaria araehnoidea, Agardh. 

 O. versatilis, Kiitzing. 

 Threads pretty thick, distinctly jointed, strongly motile, 

 with rounded slightly curved 

 ends. Articulations as long or 

 half as long as broad. Threads 

 5-6.5 /i thick, forming thin, 

 Fig. ^..—Beggtatoa araehnoidea, X arachnoid, chalk- white gelatiuous 

 3.0 (after Warming). membranes. (Fig. 31.) 



In sulphur springs and marshes. 



54. B. pellueida, Cohn {Hedwigia, 1865, p. 82), 

 Threads about 5 /* thick, motile, distinctly jointed, with 



rounded ends ; articulations almost as long as broad, trans- 

 lucent, containing but few granules. (Fig. 32.) 

 In an aquarium with sea-water. 



