8 5 es og ee eS i eS ati een 
q "Transition between he two species just referred to. 
— E.-sinnosum 
13 
MICRASTERIAS, Ag. 
val oscitans, 2al/s., var. pinnatifida (Kiilz.), Rab. Largest 
Length of ¢ ell, 94 »; breadth, 100 »; breadth at isthmus, 
s 16 p. (Plate XITT.) 
= 
ane oe co Persieh. In dimensions this form agrees for the / 
most’ part with 1. oscitans; as far as regards the form of the cell, however, it seems 
to be closely allied to she var. perc atifida 
M. tat Bail. Breadth of cell 62-65 p. 
S Mabktiighem Bay, J. Dallachy. 
M. cs (Plate XITT.) 
j a ab.: ters of the Gulf country, Dr. Thos. L. eh hi Rockingham Bay, 
: between Norman and Gilbert Rivers, 7. @ulliv 
ce hitherto no figure “a vertice” bs this species have be published, I have 
biviherea it of value to. furnish one her 
M. sp., e. Oblong; narrow at the me edian suture; semi- 
cells thee tobed + lateral lobes with sharp inferior apices, superior 
apices rounded; polar lobe a flattened gone -circle, in the middle 
slightly. eowed: with sharp corners ; not s n from the vertex and 
har 
ga an xe of cell, 49-50 p ; breadth, 30- 30. 5 »; breadth of isthmus, 
b ; 
Hab.: Waters of the Gulf country, Dr. Thos. L. Baneroft. 
os aga (Bréb.), Ralfs., var. typica, Turner. Algwe of East 
1 ndia. Long. 50, lat. 50, lat isth. 8-9, lat. lob. pol. s. sp. 36, crass. 
2h. Prats e1V). 
ab.: Not assigned. 
- incisa, var. Wallichiana, Turner. Alge of East India. 
Iv) 89, ots XIIT,, fig. 6. Dimensions, 60 : 55 p.—Schmidle. (Plate 
ae Herston road, Brisbane, W. J. Byram ; pretty rare. 
= decemdentata, Niiy. Dimensions 50: Pro 
chmidle adds :—‘ Our specimens agree sere “ ike ‘form “he 
Y Mebius in Railey Botany Bulletin, Plate xl. fy 
be es on district, Dr. Thos. L. Ban pues 
anes road, W. J. 
Professor Schmidle 
obe the under one is 
euarginate; ee upper one is prolonged into a single point. 
Dimensions, 100 : Ae a This Pena constitutes perhaps the 
(Plate 11. 
Hab. : Herston road, W. J. Byram. 
EUA STRUM, Ehrenb. 
e. 
Hab.: Johnstone River, Dr. Thos. L. Bancroft. 
Hab. ; aa 
Thashous River, See Thos, L. Bancroft ; 
didelta urp.), Rafe 
ngham Bay, J. Dallachy. 
Rockingham Bay, J. Dallachy. . . 
x 
