198 
Fart III— Tenth Annual Report 
South Side of Channel. 
A long narrow strip, from the east end of the James Watt Breakwater 
upwards to the limit of the jurisdiction of the Clyde Trustees at Newark 
Castle, is also a mussel-producing area. This area, I have been informed, 
extended further towards Greenock in former times, but the construction 
of the James Watt Breakwater has considerably altered the length of the 
mussel-producing strip. The soil on which the mussels grow is fine mud, 
and the depth of water over them runs from ten to fifteen feet at low 
springs. The strip is outlined on the accompanying map, but, besides this 
strip alongside of the navigable channel, the shallow ground near the 
timber ponds also bears mussels, but the area here is very restricted. 
Fauna of the Banks. 
Besides mussels, the ordinary animals that live in association with 
them are present on the beds. Amongst the enemies of the mussel are 
starfish, Uraster rubens L., which are obtained in the rakes from the flats 
and deeps off Ardmore. These are more numerous than the boring 
Molluscs, which perforate the mussel shell and extract the juices and flesh 
of the animal. The latter are the * Dog whelk,' Purpura lapillus L., and 
Buccinum undatum L., or ' Buckie.' The edible whelk, Littorina litorea 
L., is found especially on the Cardross side of the upper part of the Pillar 
Band, and small lugworms, Arenicola piscatorium Lamk. are regularly 
dug for in the muddy sand on all the banks. 
Samples of sandy mud were taken from four points, viz., from the Pillar 
Bank, near the Port-Glasgow edge of it, from the Cockle Bank, from 
Cabbie Low's Bank, and from the Greenock Bank, at a point opposite 
Custom House Quay. My colleague, Mr Thomas Scott, F.L.S., has 
kindly examined the mud, and made lists of the species of Foraminifers 
and Crustaceans which occurred in the mud. The Foraminifera include 
four genera and seven species, the Ostracoda seven genera and twenty- 
four species, and nine genera and nine species of the Copepoda. The 
following are the lists of these groups :— 
Miliolina fusca, Brady. 
seminulwm, (Linn.) 
, , subrotunda ( Mont. ) 
Lituola scorpiurus (Montfort. ) 
FORAMINIFERA. 
Truncatulina lobulata (Walker.) 
Polystomella striato -punctata (F. & M.) 
crispa, Linn. . 
OSTRACODA. 
Cy there lutea, Mailer. 
pellucida, Baird. 
confusa, Brady and Norman. 
porcellanea, Brady. 
villosa (G. 0. Sars. ) 
pulchella, Brady. 
concinna, Rnpert Jones. 
angulata (G. 0. Sars. ) 
dunelmensis (Norman. ) 
Cytheridca torosa (Jones. ) 
EucytTiere dedivis (Norman. ) 
Loxoconcha viridis (Mliller.) 
Loxoconcha pusilla, Brady & Robertson. 
, , tamarindus (Jones. ) 
fragilis, G. 0. Sars. 
Cythcrura gibba (MUller.) 
sella, G. 0. Sars. 
angulata, Brady. 
„ undata, G. 0. Sara. 
nigrescens (Baird.) 
,, fulva, Brady and Robertson., 
Cytherois fischeri (G. 0. Sars. ) 
Paradoxostoma abbreviatum, G. 0. Sars. 
variabile (Baird.) 
Pseudocalanus elongatus, Boeck. 
Cyclops cequoreus, Fischer. 
Ectinosoma melaniceps, Boeck. 
Ameira longipes, Boeck. 
Mesochra lilljeborgii, Boeck. 
COPEPODA. 
Laophonte lamcllifera, Claus. 
Thalestris liarpactoidcs, Boeck, 
Harpacticus chelifer (Muller.) 
Idya furcata (Baird.) 
(' 
