HOBSON, ON INDIAN DESMIDEA. 169 
met with upwards of half of the Desmidez described by 
Ralfs up here. It may be that the climate is so much more 
like that of England than it is down on the plains. Many 
English ferns are met with here that are never found in the 
plains, and the same may also be said of the mosses. 
DrEsMIDE. 
1. Docidium, Bréb. 
1. D. pristide, Hobs. 
Frond slender, constricted at the middle ; 
suture strongly marked, but not projecting 
on the sides; segments about nine times 
longer than broad, each with about twelve 
whorls of sharp, tooth-like projections, much 
resembling the saw-shaped weapon of the 
saw-fish.* Each tooth on the segments 
is visible, in their empty state, under its 
own focus. Terminal processes of very pecu- 
har form. 
Hab. In the streams running through 
the Chinamen’s Gardens, near the lake at 
Mahabuleshwar ; very common. 
This species can hardly be identical with 
Professor Bailey’s D. verticillatum, inasmuch 
as the teeth are sharp, and not obtuse, as in 
that species; nor are the terminal processes 
alike, which in the present species differ 
from those of any other species of Docidium 
with which I am acquainted. 
2. Micrasterias, Ag. 
1. M. Mahabuleshwarensis, Hobs. 
Frond oblong, rather longer than broad, 
slightly constricted in the middle. The sur- 
face of the frond is covered with small 
granules, distinctly visible, bordering the 
whole of the sinuses. Segments trilobed ; 
lobes bipartite, the end ones considerably 
exserted, having a broad but shallow notch, 
concave; sinuses serrated. 
Length of frondet mas asic o>. a2gto Of Bn ach, 
Breadth ,, ee eiies law? | ed th es 
* Whence the specific name. 
