on 
somewhat she conical blunt spines. Size: Length, 40; diameter, 
25 p : meter, 25-38 p (Wo.); length, 40 »; diameter, 
30 p (C.). oe 8 British Deatiide 103. (Plates IV. and VIL) 
Hab.: Jenkins’ Peon jorge a W. J. Byram; waters of the Gulf 
Country, Dr. Thos 
view elliptic, with a prominence of papilla on each side. Diameter, 
14-15 p; length, 17-18 ».— Wolle’s frente of the U. S., 95. (Plate 
VIL.) 
C. Blyitii, f. australica, 7. re Ree gives 
the following description of this new for ‘The dimensions ar 
2 Op. The shape of the cell igre ell with Nordster s Green 
ae form (Nordst. Desm Greenlan . The dl 
argin is somewhat more granulated, and towards the i ex of the 
half cell there are to be found in the middle two considerable (rarely 
~~ a) protuberances placed horizontally.” (Plate e Il. 
: Jenkins’ Quarry, Bundamba, W. J. Byram; rare. 
C. botrytis, ao. Frond rather longer than broad, constriction 
deep, linear; segments twice as broad as long, broadest at t esis 
narrowing upwards; ef rather rounded, ends truncate, Tous . 
o with scattered rounded pearly granules; € 
nd view Oro y 
elliptic ; pet orbicular, spinous, spines elongated and alight 
divided at the apex. Size: a 72 py; diameter, 67 fey 
Maiiotae: 36-62 (Wo.) ; length, 85 p; diameter, 65 ; length 
diameter, 52 p c Scooter s British Desmids, 105. (Plate i: 
C. botrytis, var. tumidum, Wi/tr. Dimensions, 48: 43 p 
Hab.: Jenkins’ Quarry, Bundamba, W. J. Byram. 
olitanum (Balsamo), _var. australicum 
; 
en 
in the midd eep, narrow, and s aight ; the emi-cells pe | 
upwards, often with even, often with convex margin. i with 
cell are two pyrenoids. The vertical view is a narrow pee el 
broadly inflated. » (Plat : 
Hab : ad, ‘os sbane. W. J: Byram. Turner epi + fi "a 
kindred but tonsa form in his Algw of East Tctinc p. 72, Plate : 
The following is Turner’s note referred to Dr. midle ee ith the 
44, lat. ae Proba ably a variety of Cos. Ne epoitanam| Talsamo, but i ically 
superior angles more rounded; the granules on the cyt! joderm are 
arranged. n@late e IV.)” 
C. quadrum, Lundell. Rather large, about as lon ne os 
eeply constricted, with a narrow linear sinus, rather qu 
bet slightly retuse, sides almost straight, angles Mette 
rounded, in side views each pole is rounded, an nd t the mi 
almost parallel sides, ae se its middle now and then pe . 
II.) a 
