392 DiATOMACE^ (Comber). [Surirella 



5. S. augnsta Kuetz. 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). 



,S'. apiculata W. Smith Br. Diat. II. p. 88 (1856). 

 GoLTiNGO Alto.— Rio Muio ; 5 Feb. 1856. No. 147- 



6. S. Moelleriana Grun. in Moeller, Typen Flatten 2-3-4 

 (Date ?) ; A. Schmidt Atlas t. xxiii. f. 36, etc. (1875). 



GoLUNCio Alto.— Rio Muio ; 5 Feb. 1855. No. 147- 



18. CYMATOPIEURA 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). 

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

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



19. DIATOMA DC. Flor. Frang. 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). 



Biatoma Ehrenbergii Kuetz. BacUl. p. 48. t. xvii. f. 18 (1844). 

 Z>. grande W. Smith Br. Diat. II. p. 39. t. xl. f. 310 (1856). 



Baera 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). 

 Bacilla/ria 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 Qnibinda ; March 1857. No. 130. 



GoLDNGO 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. Aeus Kuetz. Bacillar. p. 68. t. xv. f. 7 (1844). 



Var. delieatissima Grun. in V. Heurck Syn. p. 151 (1885). 

 S. delieatissima W. Smith Br. Diat. I. p. 72. t. xii. f. 94 (1853). 

 GoLUNGO Alto.— Rio Muio ; 6 Feb. 1855. No. 147. 



4. S. affinis Kuetz. Bacillar. p. 68. t. xv. f. 6, etc. (1844). 



