274 Part IIL.—Ninth Annual Report 
PROTOZOA. 
Rhizopoda were common all over the loch. Several forms were obtained 
in the dredged and hand-netted material; the following are the more 
typical varieties observed :— 
Difiugia pyriformis. This form varies from pear to balloon shape, but 
the pear shape is usually the more common. 
Diffiugia globularis.—The test is more or less globular, 4 to 4 being 
truncate and forming the aperture ; this form was much less frequent than 
the last. 
Digiiugia corona.—Test crown shaped, furnished posteriorly with few 
or more cornua. This appeared to be a scarce form. 
Diflugia marsupiformis.—Test from the side view varies a good deal, 
but the most common form was that of a slightly eccentric and depressed 
hemisphere. The aperture is not central, but is situated more to one side, so 
that its outer margin is usually close to the edge of the test, while the inner 
margin is some distance from the opposite edge. This form of Diflugia 
was of frequent occurrence. 
DIATOMACEA. 
Diatomacea were abundant, especially in the deeper parts of the loch, and 
included a considerable number of species. J. Rae, M.D., and Mr 
Robert Kidston, F.R.S.E., F.G.S., have kindly furnished me with the 
following list of species :— 
Amphora ovalis, Kiitz. Melosira orichalcea, W. Sm. 
Asterionelia formosa, Hassal. »  vartans, Ag. 
Cymbella cymbiformis, Ehr. Navicula Smithii, Breb. 
5, anglica, Lagenstedt. pe radiosa, Kiitz. 
5 cistula, Hempr. iy var. acuta, Kiitz. 
Cyclotella operculata, var. mesoleia, Grun. gastrum (Ehr. ), Donkin. 
Ceratoneis arcus, Kiitz. 4} viridula, Kiitz. 
Campylodiscus costatus, W. Sm. Pe mesolepta, Khr. 
Cocconeis scutellum, Ehr. HA limosa, Kiitz. 
gibba, Ehr. 
pusilla, Sm. 
Reinhardti, Grun. 
»  pediculus, Ehr. ie 
Cymatopleura solea (Breb.), W. Sm. _ 
Diatoma vulgare, Borq. 3 
a tenue, Kiitz. ie Sp. j 
Epithemia turgida (Ehr.), Kiitz. Niteschia sigmoidea (Ehr.), W. Sm. 
as sorex, Kiitz. < thermalis (Kiitz), Grun. 
Encyonema cespitosum, Kiitz. Pleurosigma acuminatum (Kitz), Gran. 
Fraugilaria virescens, var. (*) exigua,Grun. 
Bi construens, var. binodis, Grun. 
As mutabilis, (W. Sm.), Gran. 
Gomphonema (acuminata var.), Brebis- 
soni, Kiitz. 
Gomphonema intricatum, Kiitz. 
an olivacewm, Hhr. 
Meridion circulare, Ag. 
oe Spenserit, W. Sm. 
Stauroneis anceps, Ehr. 
Surirella linearis, W. Sm. 
js biseriata, Breb. 
ie ovalis, Breb. 
Tabellaria flocculosa, (Roth.), Kiitz. 
Tryblionella angustata, W. Sm. 
4) 3 var. curta, Grun. 
2. RartH Lake, Camitua Locu, anp LocueEenty LocH IN THE 
County or FIFE. 
These lochs were visited during the month of August, and were exam- 
ined by hand-net from the shore. 
* A vat 
x4 49 pe ; 
x re eet = oe 
