1904-5. ] The Rhizopods and Heliozoa of Loch Ness. 
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The Rhizopods and Heliozoa of Loch Ness. By James 
Murray. Communicated by Sir John Murray, K.C.B. 
(MS. received February 24, 1905. Read March 6, 1905.) 
Dr Penard has examined and reported upon the Rhizopods and 
Heliozoa collected in Loch Ness at depths exceeding 250 feet. 
No littoral samples were sent to him, as his object was to investi- 
gate the sarcodine fauna peculiar to deep lakes. The majority of 
the species found in the deep collections were recognised as 
belonging to the fauna of the littoral region, or of the adjacent 
moors, only some half a dozen species or varieties being regarded 
as peculiar to the abyssal region. 
In order to complete the list of the Sarcodina of Loch Ness, in 
so far as this can be done from the observations made by the 
Lake Survey, I now add the names of several species which were 
not detected in any of the collections sent to Dr Penard. Nearly 
all are common bog species. 
List of Species. 
Amoeba, radiosa, Ehr. 
Arcella discoides, Ehr. 
„ artocrea, Leidy. 
Difflugia lobostoma , Leidy. 
Hyalosphenia elegans , Leidy. 
,, cuneata , Stein. 
N ebela flabellulum, Leidy. 
, , carinata , Archer. 
Placocysta spinosa, Carter. 
Actinophrys sol, Muller. 
Actinospherium eichhorni 
Nebela barbata, Leidy. 
* ,, bipes (Carter). 
Acanthocystis chcetophora, 
Schrank. 
(Ehr.). 
Mr D. J. Scourfield also observed : — 
Difflugia urceolata, Carter. 
Nebela caudata , Leidy. 
* Named by Dr Penard from drawing sent to him. 
PROC. ROY. SOC. EDIN. — YOL. XXV. 
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