760 THE FRESH-WATER 
LOCHS OF SCOTLAND 
3£acrobiotus inte7'medius, 314. 
islandicus, 314. 
macronyx, 314. 
oherhduseri, 314. 
ornatus, 314. 
papillifer, 314. 
jpiUlari, 314. 
sattleri, 314. 
tetradactylus, 314. 
tuherculatus, 314. 
Macrorhynclius lemani, 306. 
Mallomonas, 280, 282. 
plcessli, 327. 
Marchantia polymorpha, 190, 251. 
3Ielosira, 333, 428. 
distans, 269. 
granulata, 191, 244, 281. 
Memhranipora, 360. 
Mentha aquatica, 174, 193. 
arvensis, 174, 217. 
174, 193, 217, 328. 
sativa, var. rubi^a, 174. 
Menyanthes trifoliata, 166, 194, 199, 203, 
204, 208, 214, 217, 224, 237, 249, 254, 
328. 
Mcsostomum prorhynchus, 319. 
viridiatum, 319. 
Metopidia acuminata^ 323. 
lepadella, 323. 
oxysternimi, 323. 
rhoinhoides, 323. 
solidus, 323. 
triptera, 323. 
Metridium, 360. 
Micrasterias, 358. 
amcricana, 330. 
apiculata, 330. 
apiculata, var. fimhriata, 302. 
hrachyptera, 302, 330. 
conferta, 330. 
conferta, var. hamata, 302. 
denticulata, 330. 
jenneri, 330. 
viaJiabuleshivarensis, 279, 331. 
mahabuleshtvarensis, var. wallichii, 302. 
murrayi, 302, 331. 
papillifera, 302, 331. 
pinnatajida, 331. 
radiata, 302, 331. 
rotata, 331. 
soZ, 331. 
thomasiana, 331. 
truncata, 331. 
verrucosa, 302, 331. 
Microdides chlcena, 321. 
robustus, 321. 
Microdina paradoxa, 299, 320. 
Microdon clavus, 321. 
Microspira desulphuricans, 3. 
estuarii, 3. 
Microstoma lineare, 318, 319. 
Milnesium tardigradum, 314. 
Mimulus langsdorffi, 174. 
Mnium punctatum, 187. 
Molinia, 225, 227. 
ccertdea, 210, 219, 222, 232, 257. 
Monospihis dispar, 317. 
Monostyla bulla, 323. 
cornuta, 323. 
lunaris, 323. 
Mo7itia fontana, 172, 205, 214, 327. 
rivularis, 172. 
Moraria brevipes, 316. 
Mougeotia, 191, 194, 224, 329. 
Mylia taylori, 190. 
Myosotis palustris, 174, 214, 217, 328. 
Myrica, 240. 
(/aZe, 176, 206, 207. 
Myriophyllum, 357, 386. 
alter niflorum, 171, 195, 198, 199, 203, 
204, 207, 211, 217, 223, 244, 248, 
254, 327. 
spicatum, 172, 195, 213, 214, 236, 244, 
250, 251, 254, 327. 
if?/szs, 298, 308, 361. 
relicta, 307, 308. 
vulgaris, 308, 315. 
Mytiius, 361. 
iV«^■s, 355. 
Nardia, 200. 
co7npressa, 190, 195, 203, 204, 211, 223. 
emarginata, 190, 195, 198, 204, 208, 
226, 329. 
scalaris, 190, 223. 
Nardiis stricta, 207, 210, 219. 
Narthecium ossifragum, 177. 
Navicula alphia, 333. 
333. 
major, 269, 281, 333. 
nobilis, 333. 
JVebela americana, 325. 
barbata, 325. 
bicornis, 278, 325. 
bursella, 325. 
carinata, 325. 
caudata, 326. 
colla7'is, 326. 
crenulata, 326. 
flabellulum, 326. 
lageniformis, 326. 
militaris, 326. 
tubulosa, 326. 
vitixea, 326. 
371. 
Nephrocytium agardhianum, 333. 
Nereis, 361. 
Netrium, digitus, 330. 
interruptum, 330. 
nagelii, 330. 
Niphargus, 306. 
/oreZi, 306. 
iV^i'teZZa, 357, 385, 396. 
flexilis, 184, 230. 
ojoftca, 162, 184, 195, 198, 199, 200, 203, 
204, 207, 209, 230, 238, 245, 259, 
329. 
o^ac«, var. attenuata, 184. 
translucens, 184, 195, 204, 329. 
Nostoc, 333. 
JVbteus quadricornis, 301, 323. 
Notholca foliacea, 324. 
longispina, 278, 282, 285, 324. 
s^Wato, 287, 324. 
