388 diatomacejB (Comber). \Gymbella 



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

 Cleve Syn. Navic. Diat. I. in K. Sv. Vefc. Ak. Hand], xxvi. 2. 

 p. 156 (1894). 



1. C. laevis ISTaeg. ex Kuetz. Sp. Alg. p. 58 (1849) ; V. Heurclc 

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



GoLUNGO Alto.— Kio Miiio ; 5 Feb. 1855. No. 147- 



2. C. stauroneiformis Lagerst. Sbtv. Diat. Spetsb, in Bih. K. 

 Sv. Vet. Ak. I. 14. p. 45. t. I. f. 15 (1873). 



&0LUNC4O Alto.— Eio Muio ; 5 Feb. 1855. No. 147. 



3. C. laeustris Cleve, loc. cit, p. 167 (1894). 



Schizonema lacusfi-e Ag. Syst. Alg. p. 10 (1824). Encyonema 

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

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



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



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

 (1833). Encyonema prostratum Ealfs in Ann. Mag. Nat. Hist, 

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



PUNGO Andonoo. — On roots of Pint/a Strntiotes in tbe Guige 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 turgidum Grun. ex A. Schmidt Atlas 

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



PuNGO Andongo. — On roots of Pistia Stratiotes in the Guige river 

 near Quibinda ; March 1857. No. 130. 



6. C. ventrieosa Ag. Consp. Grit. Diat. I. p. 9 (1830) ? ; Kuetz. 

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



Encyonema venti'icosum V. Heurck Syn. t. iii. f. 15-17, 19 

 (1880), p. 66 (1885). 



PuNGO Andongo. — On roots of Pistia Stratiotes in the Guige river 

 near Quibinda ; March 1857. No. 130. 



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

 Var. insequalis Comber, var. nov. 



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

 sub-claviform. 



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

 No. 146. Eio Mftio ; 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). 



Frustulia ovalis Kuetz. Synops. in Linnsea viii. p. 539 (1833). 



Var. libyea Cleve, loc. eit., II. p. 104 (1895). 



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



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

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



