SOILS AND BIOSSES OF SPITSBERGEN. 453 
Nehela collaris Leidy In 6 samples from Klaas ) aud in samples from Prince 
Billen Bay, ( Charles Foreland. 
Quadrula irregularis Archer . . . . „ 8 ., „ ., ,, 
Etiglyplm ciliaia Ehrenb ,> 4 ,, ., ,, ,. 
,, striffosa Leidy , 1 „ ,, „ ^^ 
'I )) var. glabra „ 1 „ „ „ .^ 2 „ 
[Wailes 
Icevia Perty „ 1(?3) „ ,, „ „ 1 „ 
., tuberculata Duj ,,0 ,, ,, „ ,. 1 
Assulina mttscorimi Greef ....,, „ „ „ „ 2 
Cijphoderia sp., Schlumb ,3 „ ,, „ „ 
Campascus triqaeter Penard ....,, 3 „ ., ,, „ „ 
Trinema enchelys Ehrenb ,,3 „ ,, ,, „ 
„ „ var. (jaleatu „ 1 „ ,, „ „ ., 
[Penard 
,, complanatMm Penard . . ,, 1 ,. ,, „ ,,2 , 
„ K«eu?'e Penard ,,6 ,, ,, „ „ 1 ,, ,, 
CorytJiion dubiuin Tarauek ,,0 ,, ,. „ ,, 2 ,, ,, 
Chlamydophrys stercorea Cienk. . . „ 1 „ ,, „ ,, 1 ,j ,, i, 
Ciliata. 
0£ the samples from Klaas Billen Bay, six contained Colpoda cucullus 
0. F. MuelL, two contained Bcdantiophorus ininutus Schew., and the following 
forms occurred in one sample each : — Balantiopliorus elongatus Schew., 
Blepharisma laterita Ehrenb., Cyclidium glaucoma Ehrenb., Enchelys sp.. 
Oxytriclia sp., StylonycMa sp. In the soils from Prince Charles Foreland 
only Colpoda cucullus 0. F. Mnell. was found. 
Discussion. 
(1) The Influence of Arctic Conditions on Protozoa. 
PrevioTis investigators have differed considerably as to the influence of 
arctic conditions on protozoa. Although the ubiquity of most of the com- 
moner fresh-water and moss-dwelling species is well known, it is rather 
difficult to believe that the same species can live in arctic as in temperate 
and even tropical lands without showing some local peculiarities. It was 
perhaps this consideration which led Ehrenberg (15) to create new specific 
names for the rhizopod shells obtained from Grreeuland, which names have 
since apparently all been discarded. Scourfield (29) remarks on the numbers 
of abnormal tests (especially in the species Euglypha ciliata and Nehela col- 
laris) found in his Spitsbergen material, and Penard (26) similarly comments 
on the tendency to produce deviations from the type in the rhizopods from 
the still more extreme regions of the antarctic. On the other hand, whereas 
Penard's antarctic specimens were mostly smaller than the average (espe- 
cially in the genera Assulina, Corycia, Corythion, and Euglypha), Awerinzew (2) 
