92 THE INVERTEBRATE FAUNA 
Berwick, etc. Living abundantly on mud 
flats at Bo’ness (JZ). 
White specimens of H. ulve come ashore 
at Newhaven. As they are dead, and 
may be only bleached, it would be unsafe 
to say that they are the var. albida (JL). 
We have found this species in Largo Bay. 
SKENEIDA. 
Skenea planorbis (Fabr.). 
Firth of Forth (/B.). 
Abundant on Cladophora and other sea- 
weeds at Dunbar, North Berwick, and 
Granton (AZ); Elie (nob.). 
Homalogyra atomus (Philippi). 
In shell sand between North Berwick and 
Canty Bay, not plentiful (JZ). 
VERMETIDA. 
Caecum trachea (Mont.). 
Firth of Forth (Zd. Mus.). 
C. glabrum (Mont.). 
Not rare in fine shell sand at North Ber- 
wick (JZ). 
TURRITELLIDA. 
Turritella terebra (Linn.). 
Firth of Forth (FB, as JT. communis) ; 
Firth of Forth, 30 fathoms (Metz. and Mey., 
as T. ungulina); Firth of Forth (Hd. Mus.). 
Alive on the shore at very low water, near 
Cramond Island (JZ). 
This species is very common in the 
Firth ; in some spots—e,., off the east side 
of Inchkeith, 12 fathoms; off Aberdour, 
5 fathoms; and Kirkcaldy Bay,9 fathoms— 
the dredge comes up almost full of dead 
shells of this species, imbedded in slimy 
erey mud. 
