ee BRITISH FRESHWATER RHIZOPODA,. 
The habit of secreting a cellulose envelope, and 
passing the encisted state within the tissues of 
Sphagnum, is wnique amongst the Rhizopoda, bemg 
characteristic of Chlaimydomyaa labyrinthuloides Arch. 
U. montana Ray Lank. appears to be a non-parasitic 
species, and differs from the former in other important 
particulars. 
1. Chlamydomyxa labyrinthuloides Archer. 
(Plate XIV, fig. 1.) 
Chlamydomyea labyrinthuloides AxcHER in Q. J. Mier. Sci. 
XV, ms. (1875), p. 107, tt. vi, vii; ALLwan in Journ. 
inn. Soc., Zool. XIII (1877), p. 282, f. 8; Birscuz1 in 
Bronn’s Thier-Reichs, I, 1 (1880), t.i, f. 9; Geppxs in Q. J. 
Mier. Sci. XXII, ns, (1882), p. 30, t. v; Ray Lankesver in 
Eneyel. Brit. ed. 9, XIX (1885), p. 848, f. vi, 2; Detace 
& Herovarp Zool. concer. I (1896), p. 82, f. 76; Hizronyuus 
in Hedwigia, XXAVII (1898), p. 1, tt. in, ff. 1-14 
(7 15-22), and ff. 1-10 in text; Jenxrnson in Q. J. Micr. 
Sci. XLIT, n.s. (1899), p. 89, ff. a—z (non F). 
This organism is, in an early stage of its existence, 
endo-parasitic, living within the tissues of aquatic 
plants, ‘the general mass, with or without sub-division, 
becoming periodically and repeatedly encisted; its 
enveloping coat hyaline, of a pale yellowish colour 
when viewed at the margin (or through its greater 
thickness), remaining thus long dormant.” In that 
condition the bodies which during active life become: 
fusiform, are globular, and they are mixed with yellowish 
green (sometimes bright red) pigment-granules; and, 
during expansion and the branching out of the proto- 
plasmic body, the latter is seen to contain numerous 
rounded pulsating vacuoles. The extended pseudo- 
podia (“ filamentary tracks’) are extremely slender, 
and hyaline; the so-called “ spindles ” bluish in colour, 
apparently homogeneous, and plastic, their progression 
along the filaments a slow gradual gliding. They are 
when in motion about sj59 or qopq of an inch in 
length and about half that in breadth. 
