Pvn H,i I'UitlS

408 TELLINID.E.
ing small rolls of bread ; and lie adds that it was col-
lected by means of a rake and net called a "rullo."
According to Philippi
D. trunculus is still esteemed a
delicacy in the sonth of Italy, and known in Sicily as
" cozzola." M'Andrew says it is as common on the
table as on the shore at Malaga, being procured by men
wading with nets as in England for shrimps. It may
also be seen with other " frutti del mare " in the fish-
market at Genoa.
The present species is the Serrula laviyata of Chem-
nitz (not his Donax laevigata) and D. anatinum of La-
marck; Risso contrived to make half a dozen species
out of it.
B. Inside margin smooth, or minutely crenulated in the adult.
3. D. politus*, Poli.
Tcllina polita, Poli, Test. Sic. i. p. 44, t. xxi. f. 14, 15. D. politus, F. & H.
i. p.33($,pl.xxi.f.7.
Body yellowish-white : tubes cylindrical, short, thick, smooth
but lineated, crowned with plain cirri : foot lanceolate, white.
(Poli.)
Shell triangularly oblong, not very inequilateral, much
compressed, with a greater convexity in the umbonal part,
rather thick, opaque, lustrous : sculpture, scarcely any other
than a few slight and indistinct concentric lines, and occasional
marks of growth which alone are perceptible by the naked
eye : colour chestnut blended with olive, beautifully marbled or
necked with creamcolour and marked with a conspicuous longitudinal
ray of the same tint, which proceeds from the beak
on the
and is obliquely curved towards the ventral margin
anterior side ; this ray becomes broader as it approaches the
margin, being there of a considerable width in full-grown
specimens ; the beaks are usually violet or flamecolour, and
variegated by a blotch of dusky purple under the ligament,
and sometimes by a similar but fainter stain on the other side
of the beak ; the lines of growth are also distinguished by
narrow bands of violet when that hue appears : epidermis thin
* Polished.