BUGLTPHA CILIATA. 37 



difficulty is of course usually only experienced with 

 distorted empty tests; if the animals are active and 

 healthy their identification presents no difiiculty. 



If freshwater algse are carefully collected, indi- 

 viduals belonging to this species or to E. strigosa may 

 frequently be watched creeping along the filaments or 

 branches. 



Forma glabra f . nov. (PI. XXXVIII, fig. 4 ; 

 PI. XXXIX, figs. 8-11.) 



Test as in the type but glabrous ; plasma and 

 pseudopodia normal. 



Found in association with typical individuals, but 

 rather scarce. 



Forma heterospina f . nov. (PL XXXVII, fig. 3 ; 

 PI. XXXVIII, fig. 6.) 



Euglypha ciliata 



Leidy (pars) Treshw. Rhiz. N. Amer. (1879), p. 216, pi. xxxvi, ff. 16, 17. 



Test as in the type, but thickly covered with cils 

 of various lengths ; plasma and pseudopodia normal. 



Found in sphagnum, but rare. The cils vary from 

 5 to 18 ju, in length, the longer ones are often curved ; 

 they are similar in appearance and disposition to those 

 of E. strigosa var. heterospina, which, however, is much 

 more frequently observed than this variety. 



The following references may pertain to this or to 

 an allied ciliated species such as E. strigosa : — 



Euglypha ciliata 



Pakona in Boll. Scient. II (1880), pp. 47, 48. 



TA:p.ANEK in Sitzber. bohm. Ges. Wiss. 1881, p. 234 ; in Abh. bohm. 



Ges. "Wiss. (6) XI, viii (1882), p. 33. 

 Tabe in Rep. N. York State Mus. 5XXV (1884), p. 167. 

 Geebff in Sitzber. Ges. nat. Marburg, 1888, pp. 113-115. 

 Haetby in Amer. Natur. XXII (1888), p. 73. 

 Maggi in Rend. R. 1st. Lomb. (2) XXI (1888), p. 302. 

 Oeetes in Mission scient. Cap Horn, VI, Prot. (1889), p. 20. 

 Peeey in Proc. Amer. Micr. See. XII (1891), p. 95. 

 LOED in Trans. Manch. Micr. Soc. 1891 (1892), p. 56 ; op. cit. 1904 



(1905), p. 56. 

 Levandbe in Acta Soc. Fauna Fenn. XII, ll (1894), pp. 6, 21 ; op. 



cit. XYIII, VI (1900), p. 33. 



