364 NOTES—ORIGINAL AND SELECTED.
Essex Naturalist, ix. 49 and x. 56), it was reported that owls
continued to increase. Kestrels, sparrow-hawks and magpies
remained about constant. Small birds were very numerous,
and the gold finch is on the increase, and has nested in regularly
increasing numbers.
MOLLUSCA.
Ostrea Angulata, an introduced Mollusc, at Southend.
—In 1903, Dr. C. B. Plowright sent me specimens of Ostrea
angulata attached to periwinkles which had been bought in the
Lynn market.
In October, 1903, I visited Southend and found full-grown
specimens attached to stones, mussels, and oyster shells. They
were picked up, dead and alive, on the tide mark from Southend
gas works to Shoeburyness. The thickness of the shell makes it
more liable than other oysters to be rolled about by the water,
and hence many of them were so worn they could only be dis-
tinguished from oval stones by their regular black and white
banding. 
On making enquiries I was fortunate enough to meet a
Southend dealer who supplied the Lynn market. He informed
me that this oyster was introduced from Portugal for cultivation
in the Thames Estuary,but they were considered too small, and
so their owners "loped 'em overboard" ; but again, unlike other
oysters, the spat settles readily, so that they are now well
distributed.
As this species was offered for sale in the Southend shops, I
thought it unnecessary at the time to call any attention to its
occurrence.—T. Petch, B.Sc, Leytonstone.
Testacella Haliotidea, Drap., at Colchester.—Dr.
Chichester yesterday brought me in a specimen of this subter-
ranean carnivorous slug, which had been found in his garden at
Crouch Street, Colchester. This is the only Essex example that
has come under my notice.—Henry Laver, F.L.S., March
22nd, 1904. [The only previous records we have are those by
Mr. Webb at Stisted and Widford. Essex Naturalist x, 31,
and Journal of Essex Technical Laboratories, ii., 127, 242.]
Arion Intermedius Norm. (A. minimus Simroth) in
Epping Forest.—This slug is not recorded as an Essex species
in Mr. Wilfred Mark Webb's "Non-Marine Mollusca of Essex."
(Essex Nat., vol. x.). During, the last four years I have