384 diatomace.e (Comber). [Navicula 
18. N. radiosa Kuetz. Bacillar. p. 91. t, iv. f. 23 (1844). 
Golungo Alto.— Rio Muio ; 5 Feb. 1855. No. 147. 
19. N. oblonga Kuetz. Bacillar. p. 97. t. iv. f. 21 (1814). 
Frustulia oblonga Kuetz. Alg. Dec. No. 71 (1833). 
Gol UNGO Ai.to.— On small shells in ponds near Sange : Dec. 1854. 
No. 146. 
20. N. dicephala W. Smith Br. Diat. I. p. 87. t. xvii. f. 157 
(1853). 
Pinnularia dicephala Ehrenb. in Berlin, Ber. K. Pr. Ak. 1837. 
p. 45; Infusionsth. p. 185 (1838). 
Golungo Alto.— Rio Muio ; 5 Feb. 1855. No. 147. 
21. N. lanceolata Ehrenb. Infusionsth. p. 185 (1838). 
Frustulia lanceolata Ag. in Flora x. p. G2G (1827). 
Golungo Alio. — Rio Muio ; 5 Feb. 1855. No. 147. 
22. N. anglica Ralfs in Pritchard Infusoria p. 900 (1861). 
N. tumida W. Smith Br. Diat. I. p. 53. t. xvii. f. 146 (1853). 
Golungo Alto. — On small shells in ponds near Sange ; Dec. 1854. 
Xo. 146. Rio Muio ; 5 Feb. 1855. No. 147- 
23. Navicula (Schizonema) mollis Cleve Syn. Navie. Diat. II. 
in K. Sv. Yet. Ak. Handl. xxvii. 3. p. 26 (1895). 
Schizonema niolle W. Smith Brit. Diat. II. p. 77. t. Iviii. f. 365 
(1856). 
Loanda. — In company with minute plants of Enteromorpha on the 
apices of leaves of Zostera nana in the Atlantic Ocean, Praia (shore) 
de Zamba grande, near Loanda : 3 July 1858. No. 196- 
Welwitsch's specimen probably belongs to this species. 
2. CALONEIS Cleve Syn. Navic. Diat. II. in K. Sv. Vet. 
Ak. Handl. xxvii. 3. p. 46 (1895). 
1. C. fasciata Cleve, I.e., p. 50 (1895). 
Navicula fasciata Lagerst. Sotv. Diat. Spetsb. in Bin. K. Sv. 
Vet, Ak. Handl. I. 14. p. 34. t. ii. f. 11 (1873). 
Golungo Ai.to.— On small shells in ponds near Sange; Dec. 1854. 
Xo. 146. Rio Muio ; 5 Feb. 1855. No. 147. 
2. C. Silicula Cleve, I.e., p. 51. 
Navicula Silicula Ehrenb. Verbreit. in Berlin, Abhand. K. Pr. 
Ak. 1843, p. 419 (131). 
Var. ventrieosa Cleve, I.e., p. 52. 
Navicula ventrieosa Ehrenb. in Berlin, Abhandl. K. Pr. Ak. 
1830. p. 67. 
Golungo Ai.to.— On small shells in ponds near Sange; Dec. 1854. 
Xo. 146. 
3. C. amphisbaena ( leve, I.e., p. 58. 
Navicula amphisbcena Bory in Encycl. Method. Zoophytes 
p. 565 (1824). 
GOLUNGO Ai.to. -On small shells in ponds near Sange; Dec. 1854. 
No. 146. 
