392 diatomace.e (Comber). [Surirella 
5. S. augusta Knetz. Bacillar. p. 61. t. xxx. f. 52 (1844). 
Golungo Alto.— Rio Muio ; 5 Feb. 1855. No. 147. 
Var. apiculata Grun. in Wien, Verb. k. k. zool. bot. Ges. xii. 
p. 455. t. vii. (10). f. 8 (1862). 
5. apiculata W. Smith Br. Diat. II. p. 88 (1856). 
Golungo Ai.to.— Rio Muio ; 5 Feb. 1855. Xo. 147- 
6. S. Moelleriana Grun. in Moeller, Typen Platten 2-3-4 
(Date ?) ; A. Schmidt Atlas t. xxiii. f. 36, etc. (1875). 
Golungo Alto.— Rio Muio ; 5 Feb. 1855. No. 147- 
18. CYMATOPLEURA W. Smith in Ann. Mag. Nat. Hist. 
Ser. 2. vii. p. 12 (1851). 
1. C. Solea W. Smith, I.e., p. 12. t. iii. f. 9 (1851). 
Surirella Solea Kuetz. Bacillar. p. 60. t. iii. f. 61 (1844). 
Golunco Alto. — On small shells in ponds near Sange : Dec. 1854. 
Xo. 146. Rio Muio, 5 Feb. 1855. No. 147. 
19. DIATOMA DC. Flor. Fran.;. II. p. 48 (1805); Heib. 
Consp. Crit. Diat. Danic. p. 55 (1863). 
1. D. elongatum Ag. Syst. Alg. p. 4 (1824). 
Var. Ehrenbergii V. Heurck Syn. p. 160 (1885). 
Diatoma Ehrenbergii Kuetz. Bacill. p. 48. t. xvii. f. 18 (1844). 
D. grancle W. Smith Br. Diat. II. p. 39. t. xl. f. 310 (1856). 
Balra do Bengo.— On Naias in Lagoa Quifandongo, near Quise- 
quele ; Nov. 1853. No. 135. 
20. SYNEDRA Ehrenb. in Berlin, Abhand. 1830. p. 40; 
Infusionsth. p. 210 (1838); Kirchn. in Cohn Krypt.-Flor. 
Schles. II. i. p. 207 (1878). 
1. S. Ulna Ehrenb. Infusionsth. p. 211. t. xvii. f. 1 (1838). 
Bacillaria Ulna Nitzsch Beitr. z. Infus. p. 99. t. v., in Halle, 
Neue Schrift. Naturf. Ges. III. i. (1817). 
PuNGO Andongo. — On roots of Pistia Stratiotes in the Cuige river 
near Quibinda ; March 1857. No. 130. 
Golungo Alto. — On small shells in ponds near Sange ; Dec. 1854. 
No. 146. In company with a short broad form in which the blank is 
often unilateral, and also with a constricted form ; Rio Muio, 5 Feb. 
1855. No. 147. 
2. S. splendens Kuetz. Bacillar. p. 66. t, xiv. f. 16 (1844); V. 
Heurck. Syn. t. xxxviii. f. 2 (1880-84). 
Golungo Alto. — On small shells in ponds near Sange ; Dec. 1854. 
No. 146. Rio Muio ; 5 Feb. 1855. No. 147. 
3. S. Acus Kuetz. Bacillar. p. 68. t. xv. f. 7 (1844). 
Var. delicatissima Grun. in V. Heurck Syn. p. 151 (1885). 
S. delicatissima W. Smith Br. Diat. I. p. 72. t. xii. f. 94 (1853). 
Golungo Alto.— Rio Muio ; 5 Feb. 1855. Xo. 147- 
4. S. affinis Kuetz. Bacillar. p. G8. t. xv. f. 6, etc. (1844). 
