16 
3 teeth below the apical sa cH membrane of semi-cells ne 
with 4 granules in the middle. Length of cell, 19°5-23 p; breadth, 
29-32 »; breadth of isthmus, 65-9 ». Semi-cells not seen from the 
vertex and side.— Borge. (Plate XIV.) 
Hab.: Waters of the Gulf country, Dr. Thos. L. Bancroft. 
oe ruta bee Sihhoe h Tene Algw of East India, p. 86, Plate; 
mensions 5 —Schmidle 
Ue tbe, road, W. a eee rare. ‘ 
E.c tae hoa solum, Nordst. Dimensions, 76: 3L p= 
Schmidt, (Plate 1X.) 
oh a aa one rare. 
E. dcabouatam (West)=E. rostratum, subsp. ha iz a 
tum, West. alge of Mulagercas (ub. sup.), p. 51, Plate VI., fig. 
Hab.: Herston road, Brisbane, W. J. Byram ; pretty rare 
Professor Schmid adds the sd rele note :—£. _wmbowatum is a 
distinct from E. rostratum in form of cell and granulati ‘lhe var. pr@ yee 
Nordst., Freshw. Algew of New Zealand and Tg p: 3, Plate 3, fig. 7, belongs 
to it, as well as the var elegans, West (udi. s 
E. Turneri, West Freshwater Alge, W. Feat p. 141. 
Hab.: N.E. Australia, Whitewater, a Mt. Albion, Ch. W. B ; h- 
The soeaisena goso agree with Plate ITI., fig. "1 in Nordted’ ben 
water i of New Zealand. - cad: specimen Cait Mt. Albion) wé 
long, 26 u broad ; isthmus, 6°5 w broad: 
d 
E. compactum, iia: Very small, ci ce aig 
than broad; semi-cell bro ad, transversely oval; ae 
protuberance with a linear incision; two small prominence, ay oe 
each side of the apical projections. Diameter, 20-22 p; lengt A as 
Wolle’s Desmnids of the U.S., 107, Plate XXVIL, figs 28 a 
nearly akin to it, are described by Turner in his Alg vs 
p. 88, Plate XT., fig. 1, and Plate X.., nee 36 and 52, rae ce incurvat 
and annulatum (see Plate V.). (Plate NLL) 
Hab.: Herston road, Brisbane, W. J. Byram ; rare. 
STAURASTRUM, Meyen xt 
a retusum, Turner. Algew of East India, p. 104, Plate : 
g. 1 a 
11) 
S. retusu sum, var. granulatum, Borge (n. var.). (Piste not 
Smaller variety, valehey broader than long, with straight of cell : 
hollowed; membrane fis de ieee with smaller granules. Le ngth of e 
15- — breadth, 19-2 
noroft. 
The yar. oiled ioe Kichl. and Gate. i Alp: nov., p- 13, Piste is 
be treated as a trans ition a form between this variety 5 P the sips 
Los ; partly punctate membrane, and a straight or an i inappreciably ¢o 
