112 BRITISH FRESHWATER RHIZOPODA. 
2. Nuclearia conspicua G. 8. West. 
(Plate XIII, fig. 1.) 
Nuclearia conspicua G. 8. Wzst in Journ. Linn. Soc., Zool. 
XXIX (1903), pp. 109, 111, t. xiii, #. 16-19. 
Protoplasmic body sub-globose or angularly rounded; 
protoplasm undifferentiated, granuluse, containing nu- 
merous large vacuoles, with a single large spherical 
nucleus which exhibits a punctate appearance; pseu- 
dopodia fairly numerous, stout, rigid, generally with 
one or two branches which are a little divergent and 
attenuated to fine points. 
Dimensions ; Diameter of body 83-120 »%; length of 
pseudopodia 17-54: p. 
In boggy pools, Lewis, Outer Hebrides ((7. 8. Vest). 
This rhizopod, Prof. G. 8. West (whose description 
we have quoted), records having found in considerable 
profusion amongst numerous desmids and other alge 
in small pools. The animals, he says, “are of much 
larger size than N. delicatula Cienk., or N. simplex 
Cienk., and the protoplasm is much more vacuolated. 
There is a single nucleus present in each individual, 
but no contractile vacuoles were observed. The pseu- 
dopodia ave protruded irregularly from the surface of 
the body-protoplasm, often in small clusters. They 
are broad at the base, generally straight and much 
attenuated, and almost always branched. Except for 
their perfectly smooth exterior and absence of granules, 
they are very like those present in the genus Tompy- 
rella.” The species is a voracious feeder. 
Genus 14. ARCHERINA Ray Lankester, 1885. 
Archerina Ray Lanxestrr in Q. J. Micr. Sci. XXV, ns. 
(1885), p. 61. 
Body spherical, minute, furnished with long, delicate, 
radiating pseudopodal filaments, one or more large 
vacuoles, and a single bifid chlorophyl corpuscle, which 
