100 LINDSAY, ON THE PROTOPHYTA OF NEW ZEALAND. 
Genus 8. Nitzschia. 
15. parvula, Sm. ? 
Smith describes parvula as marine, but my collection con- 
tains no marine forms; so that this diatom, which was con- 
sidered as doubtfully referable to parvula by Dr. Greville, 
may really prove to be another species.* 
16. Amphioxys, Ehrb. 
17. minutissima, Sm. 
18. spathulata, Bréb. 
This also is recorded by Smith and Rabenhorst as marine, 
while in Otago it occurred in fresh water, though in lagoons 
near the coast, and sometimes flooded by the sea. 
Genus 9. Homeocladia. 
19. stgmoidea, Sm. 
» 10. Synedra. 
20. minutissima, Kitz. 
21. radians, Kiitz. 
A common British form, almost cosmopolite, previously 
found in New Zealand (Smith). 
22. tenuis, Kiitz. 
Occurs in Germany and France, but not British (Pritchard).+ 
Throughout Europe, however, says Rabenhorst, p. 136. 
25. delicatissima, Sm. 
24. tenera, Sm. 
25. Ulna, Ehrb., and var. 8. Sm. 
Occurs also in Ceylon. 
26. acuta, Ehrb. 
Occurs m America, Asia, Africa, and Australia. Not 
British (Pritchard). ‘Throughout Europe (Rabenhorst). 
27. fasciculata, Ag. 
Genus 11. Cymatopleura. 
28. apiculata, Sm. 
In my list of Otago Diatomacee, given in the Linnean 
Society’s ‘ Journal,’ vol. ix, p. 132, this genus and species are 
erroneously omitted; but the error was corrected by Dr. 
Greville in aletter to me of March 5th, 1866. Regarding this 
species Mr. Carruthers writes met that it ‘is considered as 
* Rabenhorst, ‘Flora Europea Algarum’ (1864), p. 154, describes it 
as both freshwater and marine. 
+ ‘History of Infusoria,’ 4th ed., 1860. Section on “ Diatomacez,” by 
Ralfs. 
+ Letter, 14th December, 1566. 
Oe ee | et ae 
