\ GENERAL 
PAGE 
? curvicaulis, Difflugia . li, 29 
cyanthus, Parmulina . iv, 28 
eyclostoma, Averintzia iv, 65 
cymbalum, Pyxidicula iv, 23 
Cyphoderia Schlumb. . iii, 68 
ampulla (Ehrenb.) Leidy . iii, 70 
var. major Penard . iii, 78 
var, papillata Wailes . iii, '77 
var. vitrea Wailes iii, 76 
trochus Penard . iii, 80 
var. amphoralis Wales iii, 81 
var. palustris Penard . iii, 81 
D. 
Dactylospherium Heriw. & 
Less. i, 64 
polypodium Schultze i, 67 
radiosum (Ehrenb.) 
Buetsch. i, 64 
delicatula, Nuclearia . i, 109 
dentata, Arcella - 4, 325 
dentata, Sphenoderia . iii, 63 
denticulata, Euglypha . li, 41 
dentistoma, Nebela 11,119 
Development iv, 7 
Diaphoropodon Archer iii, 122 
‘mobile Archer iii, 128 
Difflugia Leclerc ii, 2 
acuminata Ehrenb. . 11,19 
var. curvata Cash ii, 24 
var. inflata Penard ii, 23 
amphoralis Hopk.. . li, 43 
arcula Leidy . li, 55 
bacillariarum Perly . li, 25 
var. elegans Penard . ii, 28 
bacillifera Penard . li,17 
brevicolla Cash . li, 38 
constricta (Ehrenb.) Leidy ii, 54 
var. spinifera Playf. . iv, 42 
corona Wallich . ii, 49 
crassa Cash ii, 13 
? curvicaulis Penard . li, 29 
globulus (Ehrenb.) Hopk. ii, 33 
“ gramen Penard . ii, 48 
labiosa Wailes iv, 89 
lanceolata Penard ii, 31 
INDEX. 125 
PAGE 
Difflugia lobostoma Leidy  . ii, 44 
lucida Penard ii, 32 
manicata Penard . iv, 39 
oblonga Ehrenb. ii, 4 
var. bryophila Penard . iv, 57 
var. claviformis (Penard) 
Cash ii, 11 
var. lacustris (Penard) 
Cash ii, 12 
var. tenuis Penard . iv, 36 
var. venusta (Penard) 
Cash ii, 10 
olliformis Lagerh. iv, 40 
orbicularis Cash °. ii, 38 
oviformis Cash ii, 52 
penardi Hopk. ii, 14 
petricola Cash . 1,18 
pristis Penard . li, 18 
? pulex Penard . li, 46 
rubescens Penard iv, 87 
tuberculata (Wallich) 
Archer . li, 159 
var. minor Wailes iv, 41 
. urceolata Carter . li, 39. 
Difflugiella Cash ii, 77 
apiculata Cash ii, 78 
DIFFLUGINE ii, 2, 159; iv, 36 
digitatum, Cochliopodium _ . ii, 148 
Diplochlamys Greeff . iv, 30 
leidyi Greeff iv, 31 
timida Penard iv, 32 
vestita Penard iv, 33 
Diplophrys Barker iii, 144 
archeri Barker ili, 144 
discoides, Arcella j, 122 
discus, Lithamceba i, 81 
Distribution i, 29 
dubium, Corythion . lil, 96 
E. 
eboracensis, Cryptodifflugia iv, 53 
echinatum, Cochliopodium _ . ii, 155 
elegans, Hyalosphenia . ii, 89 
elisa, Pontigulasia . ii, 161 
enchelys, Trinema . lii, 86 
epistomum, Lesquereusia ii, 71 
