OF THE EAST NORFOLK RIVERS. 
417 
Cytheridea torosa. 
Gammarus duebeni. 
Melita pellucida. 
Microdeudopus versiculatus. 
COROPHIUM GROSSIPES. 
Heterotanais gurneyi. 
Cyathura carinata. 
Pal.emonetes VARIANS. 
(2) August 18th, 1905. 
Between R unham and Stokesby 
Noctiluca miliaris. 
Acartia longiremis. 
Centropages hamatus. 
Eurytemora affinis. 
Balanus nauplii. 
Leptocheirus, sp. 
Spii.eroma rugicauda. 
Gnathia maxillaris. 
Macromysis flexuosa. 
Neomysis vulgaris. 
Macropsis slabberi. 
Pal.emonetes varians. 
(3) Acle Bridge. September 5th, 1905. 
Chlorine 620.3-450.6. 
Canthocamptus palustris. 
Tachidius littoralis. 
Euterpe acutifrons. 
Eurytemora affinis. 
Gammarus duebeni. 
COROPHIUM GROSSIPES. 
Sph.eroma RUGICAUDA. 
Neomysis vulgaris. 
Macropsis slabberi. 
Pal.emonetes varians. 
The first list is particularly interesting, inasmuch as the 
collections were made at a time when, in spite of spring tides, 
the water was fresh for a long period, and when no change of 
