26 
does not use the term “aculeat this and Reinsch’s 
figure, apparently exclude a acl  euntentis tobe usually placed 
under this species. (Plate III.) 
Hab : Blackstone, Ipswich, W. J. Byram. 
C. palustre, Turn.; «, circulare, f, ovale. (a) a, cireulare 
f. major, long. 65, lat. 65, lat. isth. 31; (5) cirewlare, f. minor, long. 
56, lat. 54, lat. isth. 22; (c) ovale, long. 68, lat. 78, lat. isth. 37p. 
Also in Wallich : “ Endochrome collected into 2 irregular paicher ss 
each segment.’ These forms in front view are much like C. Smolan- 
(Plate II 
Hab. : Blackstone, Ipswich, W. J. Byram. 
pachydermum, Lund. Large, a third part longer than — 
deeply constricted, with a narrow linear sinus; semi-cells acon 
forming two-thirds of a circle, lower angles rounded ; end view ] put 
side view elliptically debiouler, cell-membrane thick, ‘distinet a ie WT 
mange punctate. Amylaceous granules two. Size: Length, ! Briti 
#; diam. 80-87 p» (L.); diam. 75-100 p (W.).—Cooke’s 
Desmids, 85. (Plate IX. 
Hab. : Blackstone, Ipswich, W. J. Byram ; rare. 
C. angulatum (Perty) Rabh. Fi. Eup. Alg., P- 16h India, 
C. angulatum, f. m Grunow. Turner Alg. East 
Plate VIIL,, fig. 35. nec Si are sorsawwbit broader; y. aensions 67: 
42 n—Sclmidle. (Plate V.) 
: Blackstone, Ipswich, W. J. Byram. lat, isth- 
sy following is — from Turner’s work :—Long. 58- Gre’ eo " 
16-18, crass. 23 u w gives: Long. 62, lat. 40, lat. isth 18 « Jane 
lat. 40, ig isth. 16 u (b ws 
For the type Perty’s dimensions are :—Long. 41, lat. 29, lat. isth. 16 ee 
Wallich says :—‘In some matured specimens ape endochrome WS 8 
granular masses, measuring from 2°2 to 6°7 u in len d 2:2 to 44 the 
arranged in radii from : central point.” Whet . “this be correct ott, of 
om which I figured f. 35 Ss Plate V.) h Wallich states 
endochrome showing two pyrenoids = nagvets rt ane as a ht the 
that the ends are somewhat rounded ; specim had straig 
slightly incurved apices. The frond is ik. (Plat ate fe V. y 
C. Reinschii, Arch. Frond truncate, ok, a — y on 
longer than broad ; constriction linear ; segments ova a ne 4 
ends straight, smooth ; sides with three rrojectig ose e eg : 
elliptic, eects in the middle. Size: Length, 33 #5 we ok. 
diam, 30-35 » (W.).—Cooke’s British Desmids, 96. (Pls 
- Hab.: Jenkins’ Quarry, Bundamba, W. J. Byram ; rare. 
