2o 
BIOLOGICAL INVESTIGATIONS. 
The I'ollowing table indicates the general nature of the plankton 
obtained at the trawling excursions. Pleurobrachia was very 
common during the summer, and formed the main portion of the 
large catches of .June 25th, July 1st, and August 12th. The floating 
ova of the weever were obtained at all the stations almost from the 
end of June until the beginning of September. 
TABLE V. 
I’lace 
.•uid Date. 
.Vpi)aratus and 
Quantitj’. 
Organisms. 
1 
Kettle Inner 
Fames... 
.June '2o. 
Small surface 
net in current 
3 c.c. 
Medusoids, Beroe ** 
' Sagitta ** 
1 Copepoda *** Plutei, Zoeae 
1 Cladocera * 
Barnacles ; Cypris stage, cast cuticles 
Amphipods 
Skate Hoads. 
.June 2.5. 
Large surface 
net 
40 c.c. 
Ova of Weever **, of Gurnard 1 
Medusoids * Pleurobrachia *** 
Anomalocera 
Harbour, 
Holy Island .. 
.Tune 2.5. 
Large surface 
net near 
bottom in the 
current 
Paratylus t tea miner dami 
Mneromysis flexuosa 
Alnnioutli Bay ... 
July 1. 
Net on beam 
i hour 
Pleurobrachia *** Leseuria ** 
Ilyjjervche taurijormis 2 females 
1 male, juv. 
Bruridge Bay .. 
July 15. 
1 
Surface net 
1 hour 
5 c.c. 
Ova of Weever * 
Lumpsucker embryo 
Phiallidium, Pleurobrachia 
Weed debris 
Small net on 
beam 
1 hour 
5 c.c. 
Dinotlagellates * 
Phiallidium 
Copepoda ** 
Cladocera * 
Paratylus sicammerdami 
Schistomysis spiritus Zoeae 
Veligers 
Skate Hoads 
Aug. 4. 1 
i 
Surface net 
li hour 
2"c.c. 
Ova of Weever, Larval Flounder 
Pleurobrachia. Aurelia 
Copepoda * 
Gainmarus locusta 
Podocerus falcatus 
Hyperoche tauriformis Zoeae 
Megalopoda 
