96 THE INVERTEBRATE FAUNA 
This species is extremely common in the 
littoral zone in the Firth. 
Purpura lapillus, var. imbricata. 
Granton and Newhaven. I have not found 
a good specimen of this variety at North 
Berwick, though the species varies very 
much there as regards colour (JZ); Firth 
of Forth (Dr Knapp). 
This variety is common at Wardie, Aber- 
dour, etc., between tide marks. 
Buccinum wndatwm (Linn.). 
Firth of Forth (£d. Mus., and M‘B.). 
Forms occur which approach the varieties 
littoralis and striata, but they are not 
very well marked (JZ). 
Very common on the oyster bank and in 
other parts of the Firth. We have also 
taken it between tide marks at Wardie 
and Aberdour. 
MourIcip&. 
Murex erinaceus (Linn.). 
Firth of Forth (Zd. Mus.). 
Dead shells of M. erinaceus are not rare 
on the beach at North Berwick. I took 
a living specimen in a rock pool at very 
low water there (J/.). 
Trophon truncatus (Strom.). 
Wardie, Portobello, and North Berwick 
(M.); Firth of Forth (Hd. Mus.). 
We have dredged this species in the Firth, 
and have also taken it at Wardie. 
Fusus antiquus (Linn.). 
Firth of Forth (#d. us.) ; Firth of Forth, 
30 fathoms (Metz. and Mey.) ; Off the Isle 
of May (B.). 
This species is not uncommon. We have 
dredged it in Kirkcaldy Bay, 9 fathoms ; 
north-east of Inchkeith, 12 fathoms; and 
