SYNOPSIS OF THE SPECIES. XXXIX 



374. spiralis; stratum membranaceous, dark green, uot very lubricous; fila- 

 ments slender, spirally twisted, densely interwoven. (Tab. CV. B.) 



375. nigroviridis ; stratum very dark; filaments pale green, witli obtuse, 

 curved apices; striae distant, half the diameter of the filament. (Tab. 

 CCLI. A.) 



376. subuliformis ; stratum aeruginous-green ; filaments bright green, subuli- 

 form; striae distant |-f the diameter of the filament. (Tab. CCLT. B.) 



377. insignis ; stratum blackish-brown ; filaments brown, very thick, their apices 

 obtuse, slightly oblique and ciliated; striae very close. (Tab. CCLT. C.) 



CVI. SPIRULINA. 



378. tenuissima j stratum very lubricous, aeruginous ; filaments densely spiral, 

 very slender, flexuous. (Tab. CV. C.) 



379. Hutchinsise, Kutz. {Unknown to me.) 



Order 18. NOSTOCHACEzE. 



CVII. MONORMIA. 



380. intricata. (Tab. CCLYI.) 



CVIII. SPH^JPOZYGA. 



381. Carmichaelii j spores oblong, twice or thrice as long as broad, next the 

 connecting cell. (Tab. CXIII. A.) 



382. Thwaitesiij spores elliptical, once and a half as long as broad, distant 

 from the ciliated connecting cell. (Tab. CXIII. B.) 



383. Broomei; spores numerous, elliptical, twice as long as wide, com- 

 mencing nearest the connecting cells, which are smooth and subquadrate. 

 (Tab. CLXXIII. A.) 



384. Berkeleyana; spores large, twice the width of ordinary cells, oblong, half 

 as long again as wide, brown when mature, two on each side the connecting 

 cell, which is spheroidal. (Tab. CLXXIII. B.) 



385. Ralfsii, Thw.— Harv. Man. ed. 2. p. 233. {Not figured) 



CIX. SPERMOSIFvA. 



386. Htorea; filaments nearly straight; cells very short, compressed, closely 

 packed; spores elliptical, not wider than the cells. (Tab. CXIII. C.) 



387. Harveyanaj filaments much curved, composed of cells nearly as long as 

 broad ; spores exactly spherical, almost twice the diameter of the cells ; 

 connecting cells subquadrate, rather longer than wide, 'and of the same 

 width as the ordinary cells. (Tab. CLXXIII. C.) 



Order 19. PALMELLACK I 



CX. HOPvMOSPORA. 



388. ramosa; branched; endochrome radiated. (Tab. CCXI1I.) 



