188 MESSRS. W. WEST AND G. S, WEST ON 
whereas they are situated on special rounded knob-like eminences in Staurastrum saltans. 
The apices of the processes are also less prominently bifurcate than those of S. saltans 
and the lower spine is usually the longer. 
259. STAURASTRUM SALTANS, Joshua, in Journ. Linn. Soc., Bot. xxi. 1886, p. 641, t. 23. 
fig. 21; W. B. Turn. in K. Sv. Vet.-Akad. Handl. xxv. 1893, no. 5, p. 122, t. 14. fig. 8. 
Long. 36-394; lat. cum proc. 52-78 u; lat. isthm. 8'5-9'5 u; crass. l&u. (Pl. 99. 
figs. 13, 14.) 
Hab. With the preceding species. 
The dorsal and ventral margins of the processes of this species (as seen in front 
view) are prominently toothed, but the lateral margins (as seen in vertical view) are 
comparatively smooth. Moreover, some of the teeth of the upper margin, near the 
base of the processes, are emarginate. There are two pairs of strong, horizontally placed 
spines attached to four rounded eminences on the apex of each semicell. At the base of 
each semicell and close to the isthmus is a ring of minute denticulations. 
Burmese specimens of this species received from Joshua agree exactly with those from 
Ceylon, and as the figure given by Joshua is so very rough and inaccurate, we think it 
advisable to figure two of the examples from Ceylon.  Turners figures of Bengal 
specimens are almost more inaccurate than that of Joshua, and neither author has 
depicted the elegance of the processes of this species. 
Considerable variation was noticed in the length of the processes, and the teeth of the 
short-armed forms were of the same size as those of the long-armed forms, but fewer in 
number. 
“ S. saltans forma," described and figured by Borge in Bih. till K. Sv. Vet.-Akad. 
Handl. xxiv. Afd. 3, 1899, no. 12, p. 29, t. 2. fig. 44, is à variety of S. grallatorium, Nordst. 
Apart from other characters, it has only one pair of spines at the apex of each semicell, 
and these are directed vertically, whereas A. saltans has two deus of spines at each apex 
which are directed horizontally. 
260. SrAURASTRUM SUBMANFELDTII, sp. n. (Pl.22.fig. 16.) S. mediocre, circiter 14-plo 
latius quam longum (cum processibus), modice constrictum ; semicellulze subcyathi- 
formes, angulis superioribus in processus longos horizontaliter dispositos productis, 
marginibus superioribus et inferioribus processuum acutissime dentatis, ad basin 
processuum verrucis emarginatis przeditis, apicibus processuum quadridentatis, 
apicibus semicellularum convexis et glabris, ad basin extremum semicellularum 
sub processu unoquoque verruca subemarginata instructis; a vertice visse trian- 
gulares, lateribus concavis glabris, angulis in processus longos productis, marginibus 
processuum levissime undulatis, intra marginem unumquemque verrucis emarginatis 
4 ornatis. 
Long. 40»; lat. cum proc. 52, ; lat. isthm. 11-5 p. 
Hab. Paddyfields, Heneratgodha. Paddyfield between Kosgoda and Urahaighasma- 
hendai. 
This plant is nearest to S. Manfeldtii, Delponte, but as it occurred in quantity and 
