92 BRITISH FEESHW.ATKR KHIZOPODA. 



The habit of secreting a cellulose envelope, and 

 passing the encisted state within the tissues of 

 Sphagnum, is unique amongst the Rhizopoda, being 

 characteristic of Ghlamydomyxa labyrinthiiloides Arch. 

 C. montana Bay 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.) 



Chlamydomyxa labyrinthuloides AKCHEE in Q. J. Micr. Sci. 

 XV, 11. s. (1875), p. 107, tt. vi, vii ; ALLMAN in Journ. 

 Linn. Soc., Zool. XIII (1877), p. 282, f. 8; BUTSCHLI in 

 Bronn's Thier-Reichs, I, 1 (1880), t. i, f . 9 ; GTEDDES in Q. J. 

 Micr. Sci. XXII, n.s. (1882), p. 30, t. v; RAY LANKESTER in 

 Encycl. Brit. ed. 9, XIX (1885), p. 843, f. vi, 2 ; DELAGE 

 & HEROUARD Zool. concr. I (1896), p. 82, f. 76; HIERONYMUS 

 in Hedwigia, XXXVII (1898), p. 1, tt. i-ii, ff. 1-14 

 (? 15-22), and ff. 1-10 in text; JENKINSON in Q. J. Micr. 

 , n.s. (1899), p. 89, ff. A-E (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 w r hich 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 ^focT or Tooo f an mcn m 

 length and about half that in breadth. 



