388 DiATOMACEiE (Comber). [Gymhellu 



10. CYMBELLA Ag. Conspect. Crit. Diatom, p. 1 (1830); 

 Cleve Syn. Navic. Diat. I. in K. Sv. Vet. Ak. Hand!, xxvi. 2. 

 p. 156 (1894). 



1. C. laevis Naeg. ex Kuetz. Sp. Alg. p. 58 (1849) ; V. Heurck 

 Syn. t. iii. f. 7 (1880), p. 62 (1885). 



GoLUNGO Ai-To.— Rio Miiio ; 5 Feb. 1855. Xo. 147. 



2. C. stauroneiformis Lagerst. Sotv. Diat. Spetsb. in Bih. K. 

 Sv. Vet. Ak. I. U. p. 45. t. I, f. 15 (1873). 



GoLUXuo Aj/ro.— Rio Muio ; 5 Feb. 1856. No. 147. 



3. C. lacustris Cleve, he. cit., p. 167 (1894). 



Schizonema lacustre Ag. Syst. Alg. p. 10 (1824). Encyonema 

 Ungeri Grun. ex A. Schmidt Atlas t. x. f. 63 (1875). 

 GoLUN(K) Ai/ro.— Rio Muio ; 5 Feb. 1855. No. 147. 



4. C. prostrata Cleve, I.e., p. 167 (1894). 



Monema prostratum Berk. Glean. Br. Alg. p. 15. t. iv. f. 3 

 (1833). Encyonema jjrostraticm Ealfs in Ann. Mag. Nat. Hist. 

 xvi. p. 111. t. iii. f. 3 (1845). 



PuNGO AxDONOO. — On roots of Phtia Stmtlotes in the Cuige river 

 near Quibinda ; March 1857. No. 130. 



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



5. C. turgida Greg, in Quart. Journ. Micr. Sci. iv. p. 5, t. I. 

 f, 18 (1856). Encyonema turgichwi Grun. ex A. Schmidt Atlas 

 t. x. f. 49-53 (1875). 



PuNGO Andongo. — On roots of Pistia Stratiote^ in the Cuige river 

 near Quibinda ; March 1857. No. 130- 



6. C. ventricosa Ag. Consp. Crit. Diat. I. p. 9 (1830)?; Kiietz. 

 Bacillar. p. 80. t. vi. I 16 (1865). 



Encyonema ventricosum V. Heurck Syn. t. iii. f. 15-17, 19 

 (1880), p. 66 (1885). 



PuNGO Andongo. — On roots of P'n^tia Strutlotes in the Cuige river 

 near Quibinda ; March 1857. No. 130. 



7. C. turgidula Grun. ex A. Schmidt Atlas t. ix. f. 23-26 (1875). 

 Var. inaequalis Comber, var. nov. 



One end is more produced than the other, so that the valve is 

 sub-claviform. 



GoLUNGO Ar/ro. — On small shells in ponds near Sange ; Dec. 1854. 

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



11. AMPHORA Ehrenb. in Berlin, Ber. K. Pr. Ak. 1840. 

 p. 205 ; Cleve Syn. Navic. Diat. II. in K. Sv. Vet. Ak. Handl. 

 xxvii. 2. p. 99 (1895). 



1. A. ovalis Kuetz. Bacillar. p. 107 (1865). 



FrusUdia ovalis Kuetz. Sjoiops. in Linnasa viii. p. 539 (1833). 



Var. libyca Cleve, he. cit., II. p. 104 (1895). 



Amphora libyca Ehrenb., I.e., p. 205 (1840). 



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

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



