9 Prot . 
PROTOZOA. 
Euglypha ciliata (5), p. 172, = Difflugia (Setigerelld) ciliata, D.pilosa, 
Ehrb., = E. compressa, Carter. 
Euglypha seminulum (6), p. 172, = Difflugia seminulum, D. semeriy 
AssuUna semen^ Ehrb., = E. Irunnea^ Leidy, E. tincta^ Archer. 
Euglypha strigosa (5), p. 172, = Difflugia, Ehrb. New Jersey swamps. 
Trinema enchelys (5), p. 172, = Difflugia enchelys, Arcella hyalina, 
Ehrb. (5), = Trinema acinus, Duj., &c., = Arcella constricta and ten 
other species, Ehrb., = Euglypha enchelys, Wallich, E. pleurostoma, 
Carter. 
Difflugia spiralis, Ehrb. (7), p. 193, pi. x. fig. 15. A variety without 
coating of sand, Onega. D. proteiformis, var. lageni/ormis. Wall., 1. c., 
should form a distinct species. 
Difflugia vinosa, Archer, described ; Q. J. Micr. Sci. xviii. p. 212. 
According to Leidy (6), p. 99, and Am. Nat. xii. p. 236, Amceha princeps, 
Ehrb., = Proteus, Rosel, = Volvox chaos and Chaos protheus, Linn4, = 
Volvox protheus, Pallas, = Proteus diffluens, Muller, = Amiha diffluens, 
Bory, should be Amoeha chaos or A.proteus. 
Amoeba radiosa ?, Zool. Anz. i. p. 162, &c., from surface of water, 
exhibited an air-bladder of one-third its diameter, which disappeared in 
three minutes. 
Amoeba terricola and Arcella arenaria and ten unnamed species ob- 
served by Schneider, C. R. Ixxxvi. p. 1557. Structure given ; under 
unfavourable circumstances they become temporarily encysted ; conjuga- 
tion observed in four species, resulting in formation of cysts. 
New Genera and Species. 
Radiolaria. 
Clathrulina cienkowskii, Mereschkowsky (7), p. 191, pi. x. fig. 34, 
Lake Onega. 
Dictyopodium, Xiphacantha, Haliomma, spp. nn., (11) i. figs. 62-54 ; no 
names given. 
Challengeria, Thomson (11), ii. p. 341, fig. 68. A genus of a new 
order. Challenger [i] ida, near the Radiolaria in position. Consists of a 
single superficially pitted siliceous chamber, with a single strongly- 
labiate opening ; contains granular sarcode, with one or more nuclei and 
several dark, rounded granular masses. Atlantic, below surface. 
Foraminifera. 
Miliola schultzii, Czerniavsky, Bull. Mosc. liii. pi. vi. fig. a. Black or 
Caspian Sea. 
Lituola glomerata, Brady (5), p. 433, pi. xx. fig. 1, Arctic, &c., seas. 
Hyperammina, id. (6), p. 433. Arenaceous, almost straight tapering 
tube, open at narrow end. H. elongata, id. ibid. pi. xx. fig. 2, Arctic seas, 
North Atlantic, &c. 
Trochammina shoneana^ Siddall (10), p 46, figs. 1 & 2, Hilbre and 
Holywell, Estuary of Dee. 
Lagena feildeniana, Brady (5), p. 434, pi. xx. fig. 4, off Cape Frazer. 
Spirillina hyalina, Mereschkowsky (7), p. 214, Northern Russia. 
Hyalodiscus korotnewi, id. (7), p. 194, pi. xi. figs. 20-26. Sometimes 
