Mery 
=i 
15 
E. divergens, Josh., 8 australianum, Borge (n. var.) Lateral 
lobes furnished with a few teeth; semi-cells furnished above the 
isthmus with a ring “of iene buat 9 and within the ring 4 
granules; seen from. the acta oblong, furnished with a granulated 
inflation on each side; in lateral view furnished on both sides with a 
large basal inflation. Length of cell, 47-49°5 p»; breadth, 39-493 y ; 
breadth of isthmus, 9-10°5 pw. (Plate XIII.) 
Hab.: Waters of the Gulf country, Dr. Thos. L. Bancroft. 
ne A eh ee 
; 
| 
E. s pinulosum, Delp., var. ornatum, Borge (n. var.). Var. 
semi-cells furnished with 4 rings of granules in the middle ; polar 
lobe shortened. Length of cell, 53 »; breadth, 52 »; breadth of 
ae 13»; length of semi- -cell, Bs breadth, 57 p. (Plate 
Hab.: Waters of the nvm pagers Dr. Thos. L. Bancroft. Between Norman 
and Gilker Rivers, 7. Gulli § 
Partly by the armament et pas cell membrane, partly by the very shortene 
— lobes, which only extend to the same height as the esis te lobes this form 
hed mat rong poonand nce. t is nearly allied certain forms of £. 
hrenb; compare E. verrucosum, “s Wa ser ae Turner, Alge of 
Bast India, plate 74, Plate, XI. , fig. 9.—Borge. 
E. spinulos Nordst. Length of cell 
um, Delp., var. inermius, Nords gth , 
BT-53-somic 27- fprata ) 30 p; breadth of cell, 52-49—semic. 48- 
mk 524; breadth of isthmus, 12-12—semic. 12- (semic.) 10°5 p. 
IX.) 
Hab.: Rockingham Bay, J. Dallachy. 
° + : S ii 
fig. B. binale (Turp.), Ralfs. Forma Ralfs’ Brit Desm., Plate XIV., a. i See 
Hab.: Johnstone River, Dr. Thos. L. Bancroft. 
E. verruco E. verrucosum, f.7) (5. 
osum, Fhrenb., var. Mobii, n. var. ( ; 
ND) Australian Freshwater Ale IT. »P- 340, Piste 6 sedate Var. oka 
str 
ly ‘ 
granules | in the centre of the semi-cell large. Pi calle seen from the 
Nga undulated on both sides ; polar lo obe and upper lateral tebe 
F bat, at each apex. Le ee of cell, 95°5 p; breadth, 88-89 Bs breadt 
“mus, 30». (Plate XIII.) 
ae Hab. : Johnstone River, Dr. Thos. L. Bancroft. 
The form observed by me differs a little from Mobi 
ertain forms of Micrasterias American a (Ehrenb Kit 
so Mtg lateral lobules, mics small. Length of somi-celle 45°5 = breadth, 
chal hmus, 36 u.— Borge. _ XIV. 
b.: Waters of the Gulf country; Dr. Thos. L. Bancroft. 
4 z. B ral lobes two-lobed, 
s », Borge. With three-lobed semi-cells ; late 
Rae angler we ke three-lobed, ee alan nssgrt 
g ; ci 
=e an ide. Leng 
20-40 Hs ; ge of isthmus, 8 »»—Borge. (Plate XV.) 
: Hab: : Rockingham Bay, J. Dallachy: 
