30 BRITISH FRESHWATER RHIZOPODA. 



margin of the test but they are usually scattered over 

 its surface ; they may be solitary or in pairs ; they 

 usually measure 6-10 /x in length. 



The denticulations of the aperture-scales (fig. 120) 

 are intermediate in character between those of E. 

 ciliata and E. compressa; they are less sharp than in 

 the former and less blunt than in the latter ; the 

 number of teeth is usually five, but occasionally three 

 or seven occur in each scale, and when viewed in the 

 ordinary position of the test, that is lying on one 

 side, the points appear rounded ; this is owing to their 

 incurved form ; when they are seen in a plane that is 

 tangential to the points, these are seen to be acute. 



Forma glabra Wailes. (Plate XXXVI, fig. 4; 

 PI. XXXIX, fig. 4.) 



Euglypha strigosa f. glubra 



WAILES & PENARD in Proc. R. Irish Acad. XXXI. LXV (1911), 



pp. 37, 42. 

 WAILES in Jrn. Linn. Soc., Zool. XXXII (1912), pp. 125, 144; loc. cit. 



(1913), p 213. 



Similar to the type but glabrous ; plasma and 

 pseudopodia as in the type. 



Occurs in similar situations and in association with 

 the type, but is less common. 



Forma heterospina Penard. (PI. XXXVI, fig. 5.) 



Euglypha ciliata var. strigosa 



LEIDY (pars) Freshw. Rhiz. N. Amer. (1879), p. 216, pi. xxxvii, f. 31. 

 Euglypha heterospina 



PENARD in Mem. Soc. Geneve, XXXI, 1, n (1890), p. 180, pi. ix, 



ff. 74-79. 

 Euglypha strigosa forma heterospina 



WAILES & PENARD in Proc. R. Irish Acad. XXXI, LXV (1911), 



pp. 37, 42. 



EDMONDSON in Univ. Colorado Stud. IX (1912), p. 69. 

 WAILES in Jrn. Linn. Soc., Zool. XXXII (1912), pp. 125, 144 ; loc. cit. 

 (1913), pp. 208, 213; in Murray's Nat. Hist. Bolivia and Pern 

 (1913), pp. 32, 37. 



Test similar to that of the type but thickly covered 

 with cils varying in length up to about 20 /x, ; plasma 

 and pseudopodia normal. 



