ARCHER—ON RHIZOPODA. 291 
non-granular, rather straight, comparatively rigid, somewhat branched, 
often numerous, very inert. Test brownish, composed of somewhat elongate 
and granular particles, agglutinated together by a common organ (?) 
substance. 
Measurements.—So varied in figure as not to present any very defi- 
nite spun. of length and breadth; the largest specimens probably 
as much as 3,” in diameter. 
Localities. °~ Sparinely j in county of Wicklow, not yet seen in other 
localities, but probably to be found in similar situations hereafter, when 
better sought for. 
Pleurophrys ? amphitremordes (Arch. ). 
Pi xe fis 2. 
Specific Characters—Rather small, elliptic, or suborbicular, body 
seemingly filling the cavity of the test, and sometimes coloured by chloro- 
phyll-granules ; pseudopodia like the last, but somewhat more branched ; 
test more or less densely covered by diatomaceous frustules or arenaceous 
particles. 
Measurements.—The largest met with in length about ,4,’, breadth 
z60 > but variable in dimensions. 
Localities. —Very sparingly in pools in county of Wicklow and other 
places. 
Pleurophrys ? fulva (Arch.). 
Pl. X., fig. 3. 
Specific Characters.—Minute, egg-shaped, body filling the cavity of the 
test ; pseudopodia short, not straight, more or less branched, hyaline ; test 
of a buff or tawny colour, and covered by hyaline quartzose granules. 
Measurements.—Length and breadth respectively averaging about 
one-half less than the preceding. 
Localities.—Very sparingly in pools in same situations as fore- 
going. 
Genus, Amphitrema (Arch.). 
Generic Characters.—Rhizopod giving off two tufts of elongate linear 
branched pellucid pseudopodia, each tuft through an aperture at opposite 
ends of a test more or less covered by foreign arenaceous | IRAE, the aper- 
tures provided with a rim-like neck. 
Amphitrema Wrightianum (Arch.). 
Ply XS. fies, 4,5. 
Specific Characters.—Body generally not filling the cavity of the test, 
(always ?) including chlorophyll-granules ; opposite tufts of pseudopodia 
unequal; the compressed elliptic hyaline test, with the foreign partecles more 
crowded at the margins, and often obscuring the extremely short necks. 
VOL. ¥. 2a 
