Euasti'um] xi. desmidiace^ (West). 345 



different lateral lobes ; this difterence, however, may be owing 

 to the specimens having been dried for a long period. 



LiBONGO. — Ad margines flum. Lifune ; Sept. 1858. No. 204. 



7. E. hypochondroides W. et G. S. West in Trans. Linn. Soc. 

 2 Ser. V. 49, t. vi. f. 8 (1895) ; in Journ. Bot. 1897, p. 83. 



PuNGO AxDONGO. — In stagnis prope Anbilla (Coudo) ; March 

 1857. No. 177. 



8. E. subpersonatum W. et G. S. West in Journ. Bot. 1897, 

 p. 83, t. 366, f. 19. 



PuNGO Andongo. — In stagnis prope Anbilla (Coado) ; March 

 1857. No. 177. 



This differs from E. personatuin W. et G. S. West (in Trans. Linn. 

 Soc. 2 Ser. v. 52-3, t. vi. f . 19) in having one median wart nearer the 

 middle of the semicells and no accompanying scrobiculations, in the 

 lateral lobes being widest ia their upper portion, and in the wide 

 gaping apical notch. 



9. E. elegans Kiitz. Phyc. Germ. 135 (1845); Ralfs, I.e., 89, 

 t. xiv. f. 7 ; W. et G. S. West in Journ. Bot. 1897, p. 83. 



Heterocarpella elegans Breb. (1839). 



HuiLLA. — In uliginosis editioribus prope Humpata, Empalanca et 

 Lopollo ; May 1860. No. 15. 



PuNGO Andongo. — In stagnis prope Anbilla (Condo) ; March 

 1857. No. 177. 



E. incurvatum W. B. Turn, (in K. Sv. Vet.-Akad. Handl. Bd. 25, 

 No. 5, 83, t. xi. f. 1) and E. annulatwni W. B. Turn. {I.e., 80, t. x. 

 f. 36, 52) seem to us to belong to E. elegans. Turner's drawing of 

 the " lateral view " of E. annulatum (t. x. f. 52) shows that it is 

 somewhat oblique, and not strictly a lateral view. The zygospore 

 of E. incurvattcm is also that of some forms of E. elegans. 



10. E. subinerme W. et G. S. West in Journ. Bot. 1897, p. 84, 

 t. 366, f. 18. 



PuNGO Andongo. — In pascuis spongiosis breviter graminosis juxta 

 rapes gig. Prae^idii pr. Catete ; May 1857. No. 111. 



This species is in outline very similar to E. iuernie (Ralfs) Lund. 

 (Nova Acta R. Soc. Scient. Ups. ser. 3, viii. no. ii. (1871), 20, t. ii. 

 t. 3), but it is much smaller and shorter, has different basal angles, 

 and also a very different arrangement of surface tumors. From 

 E. sinuosum Lenorm. it differs in its much smaller size and its short 

 rectangular polar lobe as seen in front view ; from the vertical view 

 the polar lobe is oblong-elliptical, and not sinuate-quadrate. 



11. E. erosum Lund., I.e., 22, t. ii. f. 6 (1871). 



Fm'ina minor VV. et G. S. West in Journ. Bot. 1897, p. 84. 

 HuiLLA. — In uliginosis editioribus prope Humpata, Empalanca et 

 Lopollo ; May 186U. No. 15. 



12. E. cosmarioides W. et G. S. West in Trans. Linn. Soc. 

 2 ser. v. 54, t. vi. f. 23 (1895). 



Var. curtum W. et G. S. West in Journ. Bot. 1897, p. 84. 

 HuiLLA. — lu uliginosis editioribus prope Humpata, Empalanca et 

 Lopollo ; May 1860. No. 15. 



