249, THE JOURNAL OF BOTANY 
40. N. punctata (W.Sm.) Grun. On bottom of boat (no. 421). 
41. N. fasciculata Grun. On rocks in shallow water (no. 454). 
42. N. plana W.Sm. On stones in shallow water (no. 480). 
43. N. Sigma W. Sm. var. sigmatella Grun. In the mud of 
drying-up salt-lagoon (no. 439). ; 
44. N. obtusa W. Sm. var. scalpelliformis Grun. On rocks in 
shallow water (no. . 
5. Surirella ovalis Bréb. In swampy ponds (no. 389). 
46. S. striatula Turp. In stagnant pool (no. 471). 
47. Campylodiscus Clypeus Ehrenb. Abundant in the April 
plankton (nos. 414, 423, and 428); also among other Diatoms on 
stones in shallow water (nos. 430 and 448). 
MYXxoPHYcEz. 
48. Anabena oscillarioides Bory var. tenwis Lemm. in Krypto- 
gamenfl. Mark Brandenburg, Bd. iii. Heft 2, 1907, p.- 189. Crass. 
cell. veget. 28-3»; long. spor. 10-17 p, lat. 4-3-6 ». In swampy 
ponds (no. 389). 
49. Nodularia spwmigena Mertens. In ponds near mouth of 
Wady (no. 393) ; forming part of scum on surface of stagnant 
pool (no. 471; with spores). 
50. Cylindrospermum musicola Kitz. In swampy ponds 
(no. 389). 
