.384 DiATOMACE^ (Combei). [J^avicula 



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 (1844). 

 Frustulia oblonga Kuetz. Alg. Dec. No. 71 (1833). 

 GoLUNGO Alto.— 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 dicephcda Ehrenb. in Berlin, Ber. K. Pr. Ak. 1837. 

 p. 45; Infusionstb. p. 185 (1838). 

 GoLUNGO Alto.— Rio Muio ; 5 Feb. 1855. No. 147. 



21. N. lanceolata Ehrenb. Infu.sionsth. p. 185 (1838). 

 Frustulia lanceolata Ag. in Flora x. p. 626 (1827). 

 GoLUNfio Alt(j.— Rio Muio ; 5 Feb. 1855. No. 147. 



22. N. anglica Ralfs in Pritchard Infusoria p. 900 (1861). 

 jV. tumida W. Smith Br. Diat. I. p. 53. t. xvii. f. 146 (1853). 

 GoLUXGo Alto. — On small shells in ponds near Sange ; Dec. 1854. 



No. 146. Rio Muio ; 5 Feb. 1855. No. 147- 



23. Navicula (Schizonema) mollis Oleve Syn. Navic. Diat. II. 

 in K. Sv. Vet. Ak. Handl. xxvii. 3. p. 26 (1895). 



Schizonema niolle W. Smith Brit. Diat. II. p. 77. t. Iviii. f. 365 

 (1856). 



Loan DA. — 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 Oleve, I.e., p. 50 (1895). 



Navicula fasciata Lagerst. Sotv. Diat. Spetsb. in Bih. K. Sv. 

 Vet. Ak. Handl. I. 14. p. 34. t. ii. f. 11 (1873). 



GoLUNGO Alto. — On small shells in ponds near Sange; Dec. 1854. 

 No. 146. Rio Muio ; 5 Feb. 1855. No. 147. 



2. C. Silicula Cleve, I.e., p. 51. 



Xavicula Silicula, Ehrenb. Verbreit. in Berlin, Abhand. K. Pr. 

 Ak. 1843, p. 419 (131). 



Var. ventricosa Cleve, I.e., p. 52. 



Navictda ventricosa Ehrenb. in Berlin, Abhandl. K. Pr. Ak. 

 1830. p. 67. 



GoLUXGo Ai/itx — On small shells in ponds near Sange ; Dec. 1854. 

 No. 146. 



3. C. amphisbaena Cleve, I.e., p. 58. 



Navicida amiiliishoina Bory in Encycl. Method. Zoophytes 

 p. 565 (1824). 



GoLUNGo Alt(i. — On small shells in ponds near Sange ; Dec. 1854. 

 No. 146. 



