Pvn H,i I'UitlS

Habitat :
SCROBICULARJA. 443
Tidal estuaries and brackish water on the
coasts of Devon, Dorset, Hants, Sussex, Kent, Guernsey,
and Jersey, in mud at low tides; Scarborough (Bean) ;
from the stomach of a wild- duck shot on Holy Island
(Adamson) ; Seaton (Backhouse); Isle of Man, "in
cavities of dead shells from deep water on the north
coast " (Forbes); Lough Lame, co. Antrim (Thompson) ;
Portmarnock, Dublin Bay (Rev. B.W. Adams). Per-
haps some of the above localities may be questionable.
Cherbourg (DeGerville) ; Portbail in that vicinity (Mace) ;
shore of the lake, and living in 35 fathoms off the Gulf
of Tunis (WAndrew).
According to the late Dr. Lukis, who favoured me
with a description and sketch in October 1859, the ani-
mal is active, and not very timid. I give his own ac-
count of it :
mens of S. tenuis ;
" Arnold's pond contains the largest speci-
expected manner, while sifting
and I discovered it in rather an un-
under the water of the
pond the ulva and weeds in searching for a stock of
Rissoa labiosa. The R. [Hydrobia] ulva also occurs
there. I sifted the weeds at the time of nearly high
tide, while the sea-water was rushing into the pond ;
and
I imagine that the active Syndosmya was rising to the
surface of the mud to imbibe the fresh stream from the
sea, and thus became entangled in the weeds to be trans-
ferred to my sieve, an easy prey. I am not sure that
they do not become the food of the grey mullet, considerable
numbers of which live in the pond for while I
;
waded almost knee-deep, the fish played actively about
me." In the last communication that I received from
him (March 1863) he says, as to this species, " abun-
dant in streams supplying the salt-works in Guernsey ;
also in the mud on the shore, in company with Cylichna
obtusa, where there is an occasional afflux of brackish