12 
TESTACELLA SCUTULUM AT HEADINGLEY, 
LEEDS. 
EDGAR R. WAITE, F.L.S., 
The Museum, Leeds. 
On the 1st November, 1886, whilst digging worms for my birds at 
Headingley, I turned up a TZestacella, which was exhibited at a 
meeting of the Leeds Naturalists’ Club on the Monday following, 
under the name of 7: ha/iotidea. Since that time I frequently sought 
for further specimens, but without success until the 18th of 
September last, when I found five or six examples of the same 
species, together with several eggs and three or four young ones just 
hatched. These I exhibited at a meeting of the Conchological 
Society on the 7th of October, when the Society’s referees deter- 
mined them as Zestacella scutulum. This exhibit was stated to be 
the more important inasmuch as so few Yorkshire examples have had 
their specific identification accurately placed on record. The 
referees have never been able to obtain examples of those known 
to occur at Boston Spa: at all events since the developed 
knowledge of the specific differences of the animals of this 
genus has made it possible to determine for certain whether 
they are to be called 7. scutulum or T. haltotidea, which are now 
known to be specifically and anatomically distinct species, although 
down to within a few years ago considered as mere varieties. It is 
not, however, the first occasion on which TZestace//e from the West 
Riding have been accurately determined, for at the meeting of the 
Conchological Society last December (1890), Mr. H. T. Soppitt 
exhibited an example of 7. haliotidea from Ferniehurst, Shipley, 
where it had been found by Mr. E. Self, who up to the present 
time has obtained about a score specimens, and who supposed that 
they were introduced with plants from Backhouse’s Nurseries at 
York ; but, in reply to ‘a letter which I wrote to Mr. James Back- 
house on this subject,’ I am informed that Zestacel/a is unknown 
in the gardens. 
In the ‘Journal of Conchology,’ 1888, p. 320, Mr. Quilter 
records having found this species at a depth of eighteen inches, and 
in ‘The Naturalist,’ 1891, p. 76, Mr. W. E. Collinge states that he 
has found 7. haliotidea at a depth of from four to five feet. I may 
mention that none of my specimens were obtained at a depth 
exceeding eight or nine inches. 
Naturalist, 
