THE FIGURES IN COOKE’S ‘ BRITISH DESMIDS.’ 857 
After Focxr, Phys. Stud. :— 
Euastrum oblongum, fig. ¢. 
After Hassatx, Br. Freshwater Algw :— 
Euastrum circulare, fig. b. Staurastrum gracile, fig. a infer. 
After J. B. Jacopszen, Aper. Desm. Den. :— 
Cosmarium Jacobsent We Jacobsen did not give us any information 
of the dimensions of his form). 
After W. Josuua, Journ. Bot. :— 
Cosmarium Turpini var. cambricum. 
After Lunpett, Desm. Suee. :— 
Penium fdas hen Le fig. b,¢? C. quadrifarium, fig. b, ¢, d. 
‘incorree . hexastichum, fig. b, ¢, d. 
cused cake diplospora, fig.a,b? C. cyclicum, fig. e, 
(incorrect). C. speciosum, fig. c, d(b ?). 
Mibrasterias rotata, fig. d. Xanthidium aculeatum, pl. 48, 
Euastrum ventricosum, fig. b-d. fig. 10. 
E. binale var. elobatum, fig. b,e.  Staurastrum ote ida fig. f. 
d. 
£, erosum, fig. a— S. tumidum, fig 
Cosmarium anceps, fig. b, ¢, d. S. bifidum, fig. b (d ?). 
C. variolatum, fig. b. c, d. S. sewangulare, fig. b, d (a, ¢, €?) 
C. pachydermum, fig. b, ¢ ‘The spines on the processes 
C. tetrachondrum, b-d. not in accordance ela, the 
C. holmiense, description (‘ eli- 
g- 
C, tetragonum var. Lundellii, fig. cately 3-4- toothed") 6 ”) or with 
a—d. Lundell’s figures). 
C. mono m, fig. ¢, d. S. artiscon, fig. b. 
C. mA ac fig b (c, partly). 
After Nace, Gatt. e. Alg. :— 
Penium Nagelii, fig. a, a, b, ¢. Staurastrum Griffithianum, fig. 
Calocylindrus annulatus, fig. a-f. b-d. 
After Norpstept :— 
Cosmarium homalodermum, fig. ¢.d C. subspeciosum. 
C. Schliephackianum var. spetts- . eats ome 
berrgensis, fig. ¢ (4), ago Staurastrum incoi 
C. o¢ es, Eg, ¢ 4 S. Capitulum var. amoenum. 
C. sphalerostichw S. elongatum 
C. isthmochondrium (at least mostly). 
After Rernscx, Contrib. :— 
Xanthidium cristatum, fig. g. 
[It is a pity that Cosmarium Reinschii is reali Pat after Reinsch.] 
