CYPHODERIA AMPULLA. 



77 



The pale lemon colour and transparency of the tests 

 of this variety are very distinctive features. After 

 treatment with boiling sulphuric acid there is left a 

 residue of small circular discs, showing that the test 



FIG. 144. Outlines of tests of Cyphoderia ampulla var. vitraea. x 260. 

 a, normal form, b, with papillose fundus. 



is in reality constructed in a similar manner to that 

 of the type. It occurs in Switzerland (Penard), also 

 numerously at La Paz, S. America. 



Var. papillata Wailes. (PI. XLVI, fig. 4, and fig. 

 145 a in text.) 



Cyphoderia ampulla 



LEIDY (pars) Freshw. Bhiz. N. Anier. (1879), p. 203, pi. xxxiv, ff. 5, 6. 

 Cyphoderia ampulla var. papillata 

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



26, 27, 28, 29, pi. i, f. 7. 



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

 WAILES in Jm. Linn. Soc. XXXII (1912), p. 151; in Naturalist, 

 1913, p. 147. 



Test similar to that of the type but having the 

 fundus tapering to a more or less sharply-rounded 

 apex ; plasma and pseudopodia normal. 



FIG. 145. Outlines of tests of varieties of Cyphoderia ampulla. 

 a, var. papillata. x 260. b, var. major, x 160. 



Length 113-135 

 14-16 . 



diameter 43-49 /u,; aperture 

 Habitat. Sphagnum and aquatic vegetation. 



