36 
PL. 1 
Figures.‘ Pages. 
Achnanthepyla arcica n. Sp........ 11 
4 — var. incurpala 
1 1 RC EME ic er 11 
Achnanthepyla baccata n.sp........ dal 
— Bongrainit n.sp..... k,0,0 11 
— Gain pere 12, 11 
= — var. Ostrupi 
D VAT ce rer re ete oe 12 
Achnanthepyla glabrata n. sp....... 12 
— — var. Auck- : 
landua un Var. LEE ee 15 
Achnanthepyla Groenlandica n. sp. 10 
— Jamalinensis n. sp. 12 
— mesogongyla n. sp... 12 
— minutula n.Sp...... 13 
— simplex n.sp........ 20,21,224241 
— Temperein:sp.....: 35,36, 37.43 
Achnanthes antarctica n. sp........ 25, 267111 
— Charcotiine sp 07,768 a Peel 13 
_— coarctata Grunow ...... 1% 
— — Var.  elineata 
Lag'faniarctico "2770008 8,9 14 
Achnanthes (coarctata Var.?) distorta ne 
BD 2e sure PET 7 14 
Achnanthes muscorum n.sp........ 472 14 
—- muscorum Var. minor 
0, VAT AT AO TO EE 3 1% 
Cyclotella Comta Ktz............. 26 
— Meneghiniana Ktz. var. 
plana FricKe;, Free 26 
Cymatopleura Solea W.Smith...... 26 
Cymbella cistula Kirch............ 22 
— cymbiformis Agardh...... 22 
— lanceolata Kirch......... 22 
Diatoma anceps Kirch............. 23 
Diploneis ovalis Cleve var. oblongella 
Cleve.., nez eee ob SUR 21 
Epithemia Sorez Kt1.... 1e 24 
-- turgida KZ ee 24 
Zebra KV. EC RES 24 
— {9 minor V. Heurck. 24 
Eunotia lunaris Grun............. 23 
— . Videniula ht. 7 0 23 
—  tridentula Var, ventricosa 
D. VAT, 4,1 ee CT TE 42 23 
£Lunotia triodon Eh........,..... 23 
Gomphonema constrictum Eh....... 22 
Kamtschaticum Grun. 
yar, antarctica n, Var,,,,,,,..." 43 22 
PLANCHE I 
Hantzschia amphioxys Grun. 
var. 
liana Grun. f® minor... 2 é 
Hantzschia amphioxys var. Capensis + To 
ser er 
n° 
brasi- 
Gran. 27e APE TL 
Hantzschia amphioxys Var. minor 
Per: 700 APE +77 pepe re 
Hantzschia amphioxys var. Uticen- 
sis CN. 1 ARE 7 
Hantzschia PR Var; LED UE 
| phila Grun...... PAR tee “AD 
Hantzschia (amphioxys var.?) Dre 
| tiCA NSP FETE EEE done - IN O8! 
Melosira crenulata Ktz.......... RP D 
| —  Dickiei Ktz..... UE ER 
.—  ÆRoeseaña Rab*.-2.5 
—. wSelos a GTUR REC ETE AS 
Navicula appendiculata Ktz....... 
—  Atwoodii M.Per......... \ 
—  _bisulcata Lag.:...... re 
—  borealis Ktz........ AS 
— Boudetiin:IBp 1... 
—  Brebissoni Ktz......... * 
—  (Coloneis) Charcotiin. sp. 
—  (Caloneis) CHERE n. Sp.. 
—, = CUPIOM ESP CENT re re 
— — Var. elongatan: var. S 
—  Depauxztin:sp4 8 00 
— intermedia Lag. ......... 
. — var. antarctica. 
—  lata Ktz.. Mers 
—  — var. integra n. Var... 
—  :— Nar/minor Gun 
_—  macraiGrmm 620. 40 
— minima Grun.. LA PES 
—  molaris Grun.. RS 
—  muralis Grun.. 
— “mt... mere 
— — fa Dore 2 + - 
—  — varcapitulatanvar. 
Navicula mutiea var. cymbelloi sn. 
var. ... Le RITES 
Navicula mutica Var. truncata n. Va 
var. ve 
CC 
. Cleve.. 105000 
Navicula muticopsis Van Heurck. 
= — var.  capite 
nevar, nec iofs SERRE sig, (l 
Navicula nivorum n. sp ssneesres 
