352 xi. desmidiace,e (West). [Gosmarium 
PtTNGO ANDONGO. — In atagais prope Anbilla (Condo) : March 1857. 
No. 177. 
Compare with C. polygonum v. minus Hieronymus. 
22. C. ellipsoideum Elfv. in Acta Soc. Fauna et Flora Fenn. ii. 
no. 2, 13, t. i f. 10 (1881). 
Var. minor Racib. in Paniietnik Akad. Umiej. w Krakowie, 
Wydz. Matem.-prz. x. (SI), t. x. f. 9 (1885); W. et G. S. West, I.e. 
C '. proteiforme W. B. Turn, in K. Sv. Vet. -Akad. Handl. Bd. 
xxv. no. 5, 64, t. ix. f. 26 (1892). 
PtTNGO ANDONGO — In stagnis prope Anbilla (Condo) ; March 1857. 
No. 177. 
23. C. submamilliferum W. et G. S. West in Journ. Bot. 1897, 
p. 117, t. 368, f. 8. 
PUNGO ANDONGO. — In stagnis prope Anbilla (Condo) ; March 1857. 
No. 177. 
This is distinguished from ('. mamilliferum Nordst. in Vidensk. 
Medd. Naturh. Foren. Kjoben. 1869, no. 14-15, 212, t. iii. 1 22 (1870) 
by the very different form of the semi-cells in front view. 
24. C. meteoronotum W. et G. S. West in Journ. Bot, 1897, 
p. 117, t. 367, f. 18. 
HtriLLA. — In uligiuosis editioribus prope Humpata, Empalanca et 
Lopollo ; May 1860. No. 15- 
This differs from C. sexangulare Lund, (in Nova Acta R. Soc. Scient. 
Ups. ser. 3, vol. 8, no. ii. 35, t. ii. f. 23) in its larger size, its relatively 
greater length, and in its unequal hexagonal semi-cells. 
25. C. sulcatum Nordst. Alg. Sandvic. 13, t. i. f. 18 (1878); 
W. et G. S. West, I.e., p. 118. 
Pungo ANDONGO. — In stagnis prope Anbilla (Condo) ; March 1857. 
No. 177. 
Libongo. — Ad margines num. Lifune ; Sept. 1858. No. 204. 
26. C. heterochondrum Nordst. in Acta Univers. Lund. xvi. 
p. 5, t, i. f. 3 (1880). 
Var. mediogenimatum W. et G. S. West in Journ. Bot. 1900, 
p. 292. 
C. medioyemmatum W. et G. S. West in op. cit. 1897, p. 118, 
t. 367, f. 11. 
Pun«o Andongo. — In stagnis prope Anbilla (Condo) ; March 1857. 
No. 177. 
The lateral angles of this plant are usually finely granulate. 
27. C. sinostegos Sehaarschm. in Magyar. Tudom. Akad. Math. 
Termeszett. Kozlemen. xviii. 266, tab. i. f. 12 (1883). 
Var. obtusius Gutvv. in Sprawozd. Komisyi hzyographic, Akad. 
Umiej. w. Krakowie, xxviii. pt. ii. 129, t. ii. f. 13 (1893); W. et 
G. S. West in Trans. Linn. Soc. ser. 2, v. 58, t. vi. f. 33 (1895) ; 
Journ. Bot. 1897, p. 118. 
LlBONGO. — Ad margines hum. Lifune ; Sept. 1858. No. 204. 
28. C. emarginatum W. et G. S. West in Trans. Linn. Soc. ser. 
2, v. 58, t. viii. f. 14 (1895); Journ. Bot. 1897, p. 118. 
A large form with a narrower isthmus. 
