SOILS AND MOSSES OF SPITSBEKGEN. 473 
Foreland. Tlie former varied from 33/i to 65 /j, in length and the latter 
from 16/a to 30/^. Trinema complanatum Fenard was also common in two o£ 
the moss samples from Prince Oharles Foreland, and is no doubt the form 
observed by Scourfield (1/400" long) which he compares with Leidy (pi. xxxix. 
figs. 41, 54, 61, 63). They were mostly between 45 /x and 50/i in length by 
21 fjL to '60 jM in width, but a few were considerably larger, ranging up to 
75/4 long. One sample from Klaas Billen Bay contained, in addition 
to all these three species, a few large specimens nearly 70/a in length of 
T. encJielys var. galeata Penard, a form very like T. complanatum, but 
distinguished by the presence of lines on the ventral surface curving 
backwards from the aperture to the sides of the test. 
Corytldon dubium Taranek. — This was very scarce even in the two samples 
in which it was present. They were mostly from 40 a to 50 /a in length, but 
one reached 65 fj.. 
Chlamydophrys stercorea Cienk. — The classification of the Chamydoplirys 
group of rhizopoda has recently been revised by Belar (6), but, as his 
differentiation is based on the details of nuclear division^ it could not be 
followed here, so the older and wider name C. stercorea is therefore retained. 
Judging from the size (length between 24ft to 27/x by 19yu. to 21 /x), the 
specimens found probably belong to the species C. schaudinni Schussler. 
Nuclearia simplex Cienk. — The individuals found were all colourless, and 
appeared identical with those found in English soils. 
Acthioplirys sp. — Only a single specimen was found, and unfortunately a 
detailed examination was not possible. The diameter was 21/4. Penard 
obtained ii'om Spitsbergen a small new species of Raphidioplirys {R. brunii) 
of similar dimensions, to which this specimen may have belonged. The two 
genera are distinguished by the presence of minute spicules in the gelatinous 
envelope of Rapliidiophrys which are absent in the case of Actinop)lirys, but 
as they are not usually visible in the living animal, it is impossible to say 
whether they were present or not in the specimen found. 
SCMMARY. 
The protozoa contained in 3 samples of mud, 8 samples of soilj and 14 
samples of mosses from Spitsbergen have been investigated. An abundant 
fauna was found, most 'of which was identical with that occurring in the 
soils and mosses of temperate lands. 
Seven new species of flagellates are described, of which however five have 
also been found in soils from non-arctic regions. 
In conclusion, I wish to thank Mr. Gr. C. Sawyer for the soil analyses, 
Mr. B. M. Crowther for the pH estimations. Miss L. M. Crump for sug- 
gestions of names for the new species described, and especially Mr. D. W. 
Cutler, under whose supervision the whole of the work has been carried out. 
