COCHLIOPODIUM DIGiTATUM. 149 



produced on any or on all sides in the form of lobular 

 expansions, or emitted from the blunt apices of short 

 finger-like prolongations of the pliable envelope ; 

 being, in the latter case, short and acicular. The 

 endoplasm slightly granular, containing a round 

 nucleus, one or more contractile vacuoles, and a small 

 number of minute chlorophyllous particles incepted as 

 food. 



Dimensions : In the initial stage 30-40 yu, in dia- 

 meter ; in length, when in active motion, 60-80 /a. 



In aquatic mosses from Dunham, Cheshire ; March, 

 1905. 



This curious organism is remarkable for its rapid 

 changes of form during active life, appearing at one 

 moment as an almost spherical globule of protoplasm, 

 enclosed in a filmy envelope, and at the next as an 

 actively moving body with several pseudopodia extend- 

 ing and retracting with great freedom from the sum- 

 mit of the blunt digitate processes which are thrust out 

 generally in the direction of progression. Short lobular 

 or digitate pseudopodia, consisting of clear ectoplasm, 

 are also produced, usually from the posterior surface ; 

 these appear and disappear rapidly, as the movements 

 of the animal are incessant. 



2. Cochliopodium bilimbosum (Auerbach) Leidy. 

 (Plate, XXXII, figs. 1-11.) 



Amceba hilimbosa AuEebach in Zeits. wiss.Zool. VII (1856), 

 p. 374, t. xix, ff. 1-16; Caepentee Foraminifera {Ray 

 8oc. 1862), p. 23, t. i, f. 17; Caetke in Ann. Nat. Hist. 

 (3) XII (1863), pp. 32, 83. 



AmpMzonella vestita Aechee (pars) in Q. Jrn. Micr. Sci. 

 (n.s.) XI (1871), p. 112, t. vi, f. 3 ; Maggi in Boll. Sclent. 

 I, an. 2 (1880), p. 34. 



Amoeha zonalis Leidy in Pr. Acad. Philad. 1874, p. 87. 



Cochliopodium pellucidum Hbetwig & Lessee in Arcb. mikr. 

 Anafc. X (1874), Suppl. p. 66, t. ii, f. 7; F. E. Schtjlze 

 in Arch. mikr. Anat. XI, 2 (1875), p. 337, t. xix, ff. 1-5 ; 

 Allman in Jrn. Linn. Soc, Zool. XIII (1877), p. 277, f. 6; 



