FRESHWATER RHIZOPODS AND HEL{LOZOA. 327 
the different mouth of the shell, and the nature of the animal 
and its pseudopodia. 
Fam. HUGLYPHINA. 
Gen. Evetypna, Dujardin. 
39. EUGLYPHA ALVEOLATA, Dujardin, Infusoires, 1841, p. 252, 
t. i. ff. 9, 10; Hertwig § Lesser, in Archiv fiir mikr. Anat. 
1874, x. Suppl. p. 124, t. in. £.5; Letdy, Freshw. Rhiz. N. Amer. 
1879, p. 207, t. xxxv. ff. 1-18.—Ditflugia areolata, Hhrenb. D. 
acanthophora, #hrenb. isuglypha tubercuiata, Duj. i. levis, 
Perty. H. minima, Perty. 
Generally distributed and often abundant. Very variable in 
the form of the shell and in the plates composing it. The young 
forms were described by Perty as HL. levis and EL. minima. 
Some very large forms were noticed from Puttenham Common, 
Surrey; there were four strong spines in the dorsal region of the 
Shell. Length of shell 1544; breadth 80 p. 
It was obtained abundantly at 2700 ft. on Glyder Fawr, 
N. Wales. 
40. HuetypHa crntata, Leidy, Freshw. Rhiz. N. Amer. 1879, 
p. 204, t. xxxv. tf. 19, 20; t. xxxvi.; t. xxxvul. ff. 30, 31.—Dif- 
flugia ciliata, Hhrenb. Monatsb. Akad. Wiss. Berlin, 1848, p. 379. 
Euglypha compressa, Carter, in Ann. Mag. Nat. Hist. 1864, xii. 
p- 32, t.1.f.13; Schulze, in Archiv fur mikr. Anat. 1875, xi. 
p- LO1, t. v. ff. 3, 4. 
Generally distributed, but not so abundant as the preceding 
species. The forms noticed with the largest spines were from 
the New Forest, Hants. It was obtained at 2700 ft. on Glyder 
Fawr, N. Wales, and conjugating examples were observed from 
Moel Siabod, N. Wales. 
Var. stRIGOsA.— Difflugia strigosa, Ehrenb. Huglypha strigosa, 
Leidy, in Proc. Acad. Nat. Sci. Philad. 1878, p. 172; Penard, in 
Mém. Soc. Phys. et d’ Hist. Nat. Geneve, tom. xxxi. no. 2, 1890, 
p. 179, t. ix. ff. 58-68. 
I have only occasionally met with the forms with more or less 
diffuse, hair-like spines, which are included in this variety. 
Bowness, Westmoreland. Bog near Widdale Beck, N. York- 
shire. Richmond Park, Surrey. Llyn Ogwen, N. Wales. 
Orkney Is. 
