140 BRITISH FRESHWATER RHIZOPODA. 



Order AMLEBIXA. Family RETICULOSA. 



Genus CHLAMYDOMYXA (see pp. 91-94). 



2. Chlamydomyxa montana Ray Lankester. 

 (Figs. 29-32.) 



Chlamydomyxa RAY LANKESTER in Nature, XXXIV (1886), 



p. 408. 

 Chlamydomyxa montana RAY LANKESTER in Q. J. Micr. Sci. 



XXXIX, n.s. (1896), p. 233, tt. xiv, xv; FENARD in Arch. 



f. Protisteii-Kunde, IV (1904), p. 296, If. 

 Chlamydomyxa labyrinthuloides (pars) HIERONYMUS in Hed- 



wigia, XXXVII (1898), t. ii, ff. 23-25; JENKINSON in 



Q. J. Micr. Sci. XLII, n.s. (1899), f. v. 



Body initially a rounded or ovoid particle of yellow- 

 ish-green or brownish protoplasm, about 50 /x in dia- 

 meter, resembling an Amoeba at rest ; the endoplasm 

 densely crowded with pigmented corpuscles, rendering 

 it nearly opaque; surrounded by a light-greyish or 

 colourless border of granular-looking ectoplasm, from 

 which, at different points, when the animal begins to 

 move, pseudopodia are slowly emitted. Usually the 

 body becomes ellipsoid, and pseudopodal development 

 takes place at each extremity; the body gradually 

 elongates and the ribbon-like pseudopodia break forth 

 into extremely fine filaments, " apparently extruded 

 from the general mass" (Lankester). They may be 

 straight and rigid, or gently curved, and are susceptible 

 of movement from side to side. The pseudopodia 

 occasionally anastomose, and the fine filaments also 

 have a tendency to unite ; and they may sometimes 

 branch or bifurcate. The animal is sensitive to any 

 disturbance. When active it will vary in form from 

 sub- spherical to ovoid or sub-triangular, the ends, or 

 angles, being the points where the larger masses of 

 filaments originate. Simultaneously with these move- 



