RHIZOPODA. 
577 
large contractile space of Actinophrys^ 1-3 small, temporary, collapsing 
vacuoles. C. infmionum^ sp. n., p. 29, pis. v. & vi. figs. 26-43 (In infu- 
sions, among Oscillatorim^ Leptothrix, &c.). Ciliophrys transforms itself 
totally in a flagellate “swarmer,” or “zoospore,” but also propagates by 
division ; several “ individuals ” conjugate, dividing again in “ swarmers,” 
which may again be fused, &c. 
Gymnophrys, g. n., id. Body naked, without nucleus or contractile 
vacuoles ; the pseudopodial nets, with granular streaming, originate 
arbitrarily from a few points of the body-surface (a naked amphistomous 
Monothalamian). G. cometa^ sp. n., p. 31, pi. v. fig. 25 (marine at 
Naples, in peat bogs at Oharkow). 
Gromia paludosa^ sp. n., id. 1. c., p; 32, pi. vi. figs. 44-47 (Russia, in 
pools). Propagation by fission ; no nucleus. 
Biomyxa, g, n., Leidy. Might best be compared to the reticular 
pseudopods of a Gromia separated from the body ; assumes the most 
varied forms ; no nhcleus or investing membrane ; a multitude of 
minute vacuoles. B. vagans, sp. n., Leidy (9, c), p. 125 (New 
Jersey). 
A large marine Gromia (8-9mm.) is figured by Schulze (12)j pi. ii. 
fig. 11. 
Microgromia socialise Hertw., Cienkowski (5), p. 34, pi. vi. figs. 48-59 
(= Cystophrys hcecJceliana, Arch.). Observations on the longitudinal or 
transversal fission, the formation of “ zoospores,” &c. 
' Lecythium hyalinum (Ehrb.), id. 1. c. p. 38, pis. vi. & vii. figs. 66-72. 
Shell flexible, not rigid. 
Chlamydophrys, g. n., id. Euglypha without sculpture of the shell. 
Propagates by a process half budding, half fission, forming colonies 
through portions severed from the protoplasm-expansion ; also cysts, 
often embracing the contents of several shells, &c. C. stercorea, 
sp. n., id. 1. c. p. 39, pis. vii. & viii. figs. 73-89 (= Difflugia enchelys^ 
Schn.). 
DiplopTirys stercorea, id. 1. c. p. 44, pi. viii. figs. 92-1 00 (in horsedung) ; 
archeri, ibid., figs. 90 & 91 (encysted). 
Microcometes, g. n., id. Capsule globular, perforate in a few places; 
protoplasm-body with eccentric nucleus, and 2-3 peripheral contractile 
vacuoles ; pseudopodia very long, scarcely branched, without granule- 
streaming. M. paludosa, sp. n., id. 1. c. p. 46, pi. viii. figs. 101-110 
(Russia, among gelatinous AZgrcc). 
Chlamydomyxa, g. n.. Archer (1). (Systematic place uncertainf allied 
to or analogous with the Lahyrinthulcn.) Body-substance enclosed in a 
hyaline multi-laminated envelope of cellulose, of a variable lobate or 
irregular shape, whence, through an apparently lacerated aperture, the 
non-nucleated granule-bearing contents emerge at intervals, giving off 
irregularly, in an arborescent manner, tapering ramifications, and emitting 
numerous slender hyaline ramifying threads, occasionally coalescing and 
forming a more or less complex “ labyrinth,” along which slowly pro- 
ceed, with a gliding motion, from the central mass, numerous, little, 
therein pre-existent, non-nucleated, globular, plastic granules, which 
during progression assume a fusiform figure. The central mass contains 
1875. [voL. XU.] p P 
