COCHLIOPODJUM VESTITUM. 155 



phyllous particles and fine granular matter, and the 

 nucleus was conspicuous, in the posterior region, a 

 little way removed from the centre. 



5. Cochliopodium echinatum Korotneff.* 

 (Plate XXXII, fig. 19.) 



Cochliopodium echinatum KOROTNEFF in Arch. Zool. exper. 



VIII (1879), p. 480, t. xxxv, f. 9; PENABD Faune Rhiz. 



Leman (1902), p. 196, ff. 1-6 (p. 197) ; AVEKINTZEV in 



Trudui S.-Peterb. Obslich. XXXVI (1906), 2, p. 136; 



SCHOUTEDEN in Ann. Biol. Lacustre, I, 3 (1906), p. 331. 

 Cochliopodium vestitum LEIDY (? pars) Freshw. Rhiz. N. 



Amer. (1879), p. 138, t. xxxii, ff. 27, 28. 

 Cochliopodium longispinum G. S. WEST in Jrn. Linn. Soc., 



Zool. XXXVIII (1901), p. 313, t. xxviii, f. 1 ; PENARD in 



Rev. Suisse Zool. XIII, 3 (1905), p. 595, t, xiii, f. 11. 



Test very thin and delicate, subspherical, with a 

 broadly-open somewhat prominent mouth; its exterior 

 covered with very long extremely delicate hair-like 

 radiating spines. Body - protoplasm granular, and 

 containing many highly refractive globules. Nucleus 

 large and round, situated near the fundus, with one, 

 sometimes more, contractile vacuoles. Pseudopodia 

 few, broad and expansive, granular in the central part, 

 but hyaline and indistinct towards the edges. 



Dimensions : Diameter of test 42 /A ; of mouth 34 /x, ; 

 length of spines 23-39 p. (West). 



Amongst Cliara Jiispula, Wicken Fen, Cambridge- 

 shire; July, 1899 (0. 8. West). 



This species differs from C. vestitum not only in the 

 possession of longer spines but also in the wider mouth 

 and more lobose pseudopodia. The spines, says Prof. 

 West (whose description we have quoted), are more 

 numerous than those of C. vestitum, and the mouth is 

 comparatively broader than in that species. The 

 pseudopodia are also thicker and more expansive, and 

 the refractive globules from the body of the animal 



* [Cochliopodium longispinum West : CASH, MS.] 



