343 
DESMID NOTES. 
W. BARWELL TURNER, F.C.S., F.R.M.S., 
Leeds. 
THE forms of which I append brief descriptions are all British, and 
as such may be found to possess some interest for our micro- 
botanical friends. They are mostly from collections made by my 
friend Mr. J. Harbord Lewis, F.L.S., whose gatherings contain other 
apparently novel Desmidiee. The collections were made 1885-8, 
and the little plants mentioned would have been, but for continued 
illness, long ago described by me. Purely scientific description is 
deferred. 
All the figures, except otherwise stated, are x 500. 
1. Euastrum cambrense n. sp. A form apparently between 
£. erosum Lund. and £. dinale (Turp.) Ralfs, from which it 
differs in the markings, and in the peculiar horn-like upper 
lateral processes, in front view; the side view also differs, 
Long. 32, lat. 20, lat. isth. 5, cr. 9°5 #. Dolbadarn, J.H.L. 
2. Euastrum snowdoniense n. sp. Form with rotundo- 
truncate angles ; 3 small ventral inflations ; membrane thick 
Long. 31, lat. 20, lat. isth. 6°5 ». Snowdon, J.H.L 
3- Euastrum binale (Turp.) Ralfs. A tiny form of thie species, 
from the last habitat. Long. 12, lat. ro, isth. 3°5 mw. 
4- Eaustrum webbianum f. major Turn. (Fr. Alg. ‘Ind. 
t. xxii, f. 4). This, the larger form, is in an old slide, 
mounted about 1851 by the late Henry Webb. The basal 
angles and incurved sides render this very distinct. Long. 
6: int max. 28-42; — Q-Ir pf. Cronies ies 
Birmingham, H.W. Fig. x 400 : 
5. Euastrum crassicolle? baad fora The smaller one _ 
“seems certainly to appertain to this species, but the apical 
incision of the larger one dona the markings, however, and _ 
“the lateral sinuations, correspond. Long. 18, lat. 11, isthe = 
3°5 #, and long. 22, LG 13 a isth. 5 PB ices Llyn 
Badan, ). Ei. ee 
6 Euastrum dieigticdeii, n. sp.? <A very puzzling form, 
apparently close to several species, yet agreeing with none. — 
The lateral view is lanceolate, with subtruncate ends, each 
a 3 semi-cell — a central protuberance. Long. 36, lat. 22, a a 
6B ji Common Monmouth, - 
