The Fauna of the Algal. Zone of the Swan River Estuary. 59 
Fauna. 
Here is given a list of the fauna, as identified for the purpose of this 
investigation. Thus Gannnarid spp. includes two or three species of which 
one representative only was found and cannot be regarded as a true member 
of the algal fauna. 
Protozoa 
No record kept. Maximum 
abundance in April. 
Hvdrozoa 
Campaniilaria verticillata (?) 
( Linn ) . 
Turbellaria 
Lepto plana spp. 
Nemathelminthes 
Nematoda spp. 
Polychaeta 
Nereis oxypoda Marenzeller 
Nereis albanyensis Augener 
C eratonereis erythraeensis 
Fauvel. 
Small Nereids 
Odontosyllis fulgarans Claparede 
Spionid. sp. 
Oligochaeta 
Microdrilids. 
Polyzoa 
Polyzoan sp. 
Tanaidacea 
Tanais cavolinii Milne-Ed wards. 
Paratanais sp. 
Harpacticoida 
Ameira minor Thompson & 
Scott. 
Ampliiascoides inter mixt us 
(Willey). 
Amphiascopsis sexsetatus 
(Monard). 
Amphiascus sp. 
Dactylopusia tisboides Claus 
Ectinsosoma propinquum T. & 
Scott. 
Harpacticus gracilis Claus 
Idyella exigua Sars 
Mesamphiascus normani ( Sars) 
Mesoclnra parva J. M. Thomson 
Parathalestris sp. 
Perissocope sp. (?) 
Pseudothalestris pygmaea T. 
Scott. 
Tegastes sp. 
Tisbe furcata Baird 
Tisbe graciloides Sars 
Tisbe tenera Sars 
j Zaus sp. (?) 
Calanoidea 
Gladiof evens imparipes J. M. 
Thomson. 
Ostracoda 
Xestolebris aurantia Baird. 
Cy the rid spp. 
Isopoda 
Cruranthura simplicia J. M 
Thomson. 
Manna brevicornis J. M. Thom- 
son. 
Amphipoda 
CapreUa pen-antis Leach 
Caprella scaura Temple' on 
Coropliium minor J. M. Thomson 
Corophium sp. 
Erichthonias pugnax Dana 
Gammarid spp. 
Melita sp. 
Pallasea sp. (?) 
Talorchestia sp. 
Caridea 
Leander intermedins St ini} son 
Brachyura 
Cyclograpsus audouinii Milne- 
Edwards. 
Halicarcinus australis (Haswell) 
Arachnida 
Litarachna sp. 
In sect a 
Chironomid (?) larvae 
Mollusea 
Modiolus sp. 
Rissoa sp. 
Aseidacea 
Ascidea malaca (Traust.) 
Chaetognatha 
So gift a sp. 
