148 BRITISH FRESHWATER RHIZOPODA. 



Genus 29. COCHLIOPODIUM Hertwig & Lesser, 



1874. 



Amoela (pars) Aueebach in Zeits. wiss. Zool. VII (188-5), 



p. 374. 

 Amphizonella (pars) Geeeff in Arch. mikr. Anat. II (1866), 



p. 328. 

 Cochliopodmm Hertwig & Lesser in Arch. mikr. Anat. X 



(1874), Suppl. p. 66. 



Test rudimentary, consisting of a thin, flexible, 

 chitinous envelope, capable of expansion and contrac- 

 tion in response to the movements of the organism ; 

 multiform, and, as a rule, very minute ; plain or 

 covered with extremely fine hair-like processes ; the 

 plasma colourless, emitting variously-formed pseudo- 

 podia (blunt or pointed, but not acicular), in certain 

 species visible in lobular or continuous expansions round 

 the test, its finely drawn-out edges being jagged or 

 serrated. Chlorophyllous particles sparingly occupy- 

 ing the finely-granular endoplasm, with, in some species, 

 minute crystalline particles. 



1. Cochliopodium digitatum (Greeff) Calkins. 

 (Plate XXXI, figs. 21-23.) 



Amphizonella digitata GtBEEff in Arch. mikr. Anat. II 



(1866), p. 328, t. xviii, f. 18. 

 Amoeba hrevipes G-eeeff ? in Arch. mikr. Anat. II (1866), 



p. 321, t. xviii, f. 17. 

 Amoeha tentaculata Gbuber in Zeits. wiss. Zool. XXXYI 



(1882), p. 460, t. XXX, ff. 1-8; Calkins Protozoa (1901), 



p. .38, f. 12 A (p. 39). 

 Cochliopodium digitatum Calkins Protozoa (1901), f. 13 b 



(p. 41) ; Penaed Faune Rhiz. Leraan (1902), p. 190, ff. 1-.5 



(p. 191) ; Aveeintzev in Trudui S.-Peterb. Obshch. 



XXXVI (1906), 2, p. 139 ; Schouteden in Ann. Biol. 



Lacustre, I, 3 (1906), pp. 331, 332, f. 2. 



Body in the initial stage spherical or sub-spherical, 

 covered with a fine transparent envelope ; its changes 

 of outline rapid and multiform ; pseudopodia being 



