OF THE FIRTH OF FORTH. 97 
between Inchkeith and the Isle of May, 
18 fathoms. Often brought to Newhaven 
pier in the fishing boats. 
Monstr. varicosum, with several persistent 
outer lips, whitish, and large (6} inches 
long). Newhaven Harbour, brought in by 
the fishermen (JZ). 
Fusus gracilis (Da Costa). 
Firth of Forth, 30 fathoms (Metz. and Mey.). 
We have obtained it from the fishing boats 
at Newhaven. Probably it is this species 
which is referred to by M‘Bain under the 
name of Fusus islandicus. 
F. propinquus (Alder). 
Firth of Forth, 30 fathoms (Metz.and Mey.) ; 
off the Isle of May, 1854 (J/B.). 
F. jeffreysianus (Fischer). 
Firthof Forth, 30 fathoms (Metz. and Mey.). 
NASSIDA. 
Nassa reticulata (Linn.). 
Firth of Forth (/2.). 
N. incrassata (Strom.). 
Firth of Forth (IF B., and Ed. Mus.). 
At Wardie it is commoner than the var. 
minor (J.). 
This species is very common in the Firth. 
We have taken it in abundance at North 
Berwick, Wardie, Aberdour, etc. 
N. inerassata, var. minor. 
Living, and abundant, on the under side of 
stones and crumbling rocks at North 
Berwick, at very low water, and in roots 
of tangle. This variety is commoner than 
the species at North Berwick and Elie. 
It is merely a dwarf form, with a fully 
developed labial rib. Children at North 
Berwick pierce them with needle and 
thread, and call them necklace shells (JL). 
