THE

NATURAL HISTORY

OF

BRITISH SHELLS,

INCLUDING

FIGURES and DESCRIPTIONS

OF ALL THE

SPECIES HITHERTO DISCOVERED IN GREAT BRITAIN,

SYSTEMATICALLY ARRANGED

IN THE LINNEAN MANNER,

WITH

SCIENTIFIC AND GENERAL OBSERVATIONS ON EACH,

VOL. IV.

aogfe^g jjft igjii>a««i—

By E. DONOVAN, F.L.S.

AUTHOR OF THE NATURAL HISTORIES OF
BRITISH BIRDS, INSECTS, &C. &C.

-—»#©•; 5 O -*^0 *©*»—

LONDON:

PRINTED FOR THE AUTHOR,

AND FOR

F. AND C. RIVINGTON, No 62, ST. PAUL'S CHURCH-YARD;

BY BYE AND LAW, ST. JOHN'S SQUARE, CLERKENWELL.

1802.

/\a

>■ ■

:c, k,

.cu NEW Y08K. A
4?AL H^>

THE

NATURAL HISTORY

OF

BRITISH SHELLS,

PLATE CIX\

MUREX CARINATUS.

CARINATED MUREX.
GENERIC CHARACTER.

Spiral, rough. The aperture ending in a strait, and somewhat
produced gutter or canaliculation.

SPECIFIC CHARACTER

AND

SYNONYMS.

Tail patulous : Shell oblong, of six spires, with two smooth spiral
ridges; first spire ventricose. Aperture semi-circular.

Murex Carinatus : testa patulo-subcaudata oblonga : anfractibus
sex laevibus bicarinatis ; primo ventriccso, apertura
semicircular;' .
a 2

>

y.

PLATE CIX^'

Murex carinatus, angulated. With five or six spires, the body ven-
tricose : the spires rising into angulated ridges.
The aperture semicircular. Length near four
inches. From the Portland Cabinet. Pom.
Br. Zool. T. A. p. 123. sp. 96.

The shell figured in the annexed Plate is unique ; it formerly be-
longed to the late Duchess of Portland, by whose permission Mr.
Pennant described it in the British Zoology. This author has given
two figures of it, one in Plate 77, and the other in the Frontispiece
of the fourth volume.

The existence of this species being only proved by a solitary speci-
men, various conjectures have arisen amongst Conchologists respecting
it. Some have been inclined to admit it as an undoubted species, and
others as a mere accidental variety of growth of the Linnsean Murex
Antiquus. How far we may be authorized to abide by the former
opinion must rest with the critical Naturalist-

To argue that it cannot be a distinct species, because only one
shell of the kind has been hitherto found, is absurd ; since the ex-
istence of many other species has been asserted upon the evidence of
a single specimen only, and its relation to Murex antiquus is not so
obvious as mi?ht be at first imagined. It certainly approaches it in
die general outline, but the ridges of Murex Antiquus is most com-
pletely raised into tubercules, whereas those of Carinatus are per-
fectly smooth and even, nor is there that strict correspondence in
the angulations of the contour in general that should induce us to
consider it a variety of Murex Carinatus.

PLATE CIX.

In deciding a question of some moment to the English Concho-
logist, it has been thought advisable to cive an additional Plate of
Murex Antiquus, by which the difference between the two shells may-
be more easily discriminated. We must however observe, that the
latter is not absolutely known as a British shell ; it is a native of the
North Seas, and has been supposed to inhabit some of the remote
northern islands of the British dominions. The Murex Antiquus of
Pennant is a very different shell, and by no means allied to that of
Linnaeus, whose name it bears.

It is now uncertain from what part of our coast the Duchess of
Portland received this shell ; Pennant is silent in this respect, but we
cannot dispute that her Grace received it as a British shell, since it
was inserted upon her authority in the British Zoology.

A

o

.'-'■

•at

no

:\

PLATE CX,
SOLEN MARGINATUS.

MARGINATED RAZOR SHELL*
GENERIC CHARACTER.

Bivalve, with equal valves, oblong, open at both ends. At the
hinge a subulated tooth turned back, often double ; not inserted in
the opposite shell. Animal an ascidia.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell straight, of equal depth, a single tooth in each valve.

Solen Marginatus : testa lineari recta marginata, valvulis un-

dentatis.
Solen Vagina, Sheath, Penn. Br.Zool. p. 83. No. 21.

Some Conchologists imagine that Da Costa has confounded this
species with his Solen Siliqua, but it is more probable that he had
•never met with it, or the character of the teeth at the hinge could
not have escaped his notice. In its general appearance it is not un-
like Solen Siliqua, but has one end marginated, and only a single

A 4

PLATE CX.

tooth in each valve ; on the contrary Solen Siliqua has two tee!:h in
one valve, and one in the other; the single one being insetted be-
tween the two others when the shell is shut.

This is very scarce. Pennant says it inhabits Red Wharf, Anglesea,
—This is not Solen Vagina of Linnaeus, as Pennant describes it.

I

PLATE CXI.

TROCHUS TERRESTRIS.

LAND TOP SHELL.
GENERIC CHARACTER.

. Animal a slug. Shell conic, aperture nearly triangular.

SPECIFIC CHARACTER.

Rather conic, whitish, with a spiral brown streak along the middle

of the wreaths.

Trochus Terrestris : testa subconica albida anfractibus linea

media fusca.
Trochus Terrestris, Land. Penn. Brit. Zool. No. 108. tab. 80.

fig. 10S.
Trochus Terrestris tertius. Da Costa Br. Conch, p. 36. C.

Pennant describes this new British species of Land Trochus upon
the authority of Mr. Hudson, who discovered it upon the Mountains
of Cumberland. Da Costa therefore places it as a distinct species, but
expresses some doubt whether it may not be the same Land Trochus
as Dr. Lister found in the moss at the roots of the large trees in
Burwell woods, in Lincolnshire, and to which the shell found by
Mr. Morton, in Morsley wood, Northamptonshire, bears great
affinity. Dr. Lister's shell had six or seven wreaths, and Mr. Mor-
ton's only five. Mort. Northampt. ch. 1. p. 415.

11%

-\

. Is

PLATE CXII.

TURBO DUPLICATUS.

TWO RIDGED SCREW SHELL.

GENERIC CHARACTER.

/

Animal Limax. Univalve, spiral, or of a taper form. Aperture
somewhat compressed, orbicular, entire.

SPECIFIC CHARACTER

A NO

SYNONYMS.

Shell slender, with two sharp prominent spiral ridges.

Turbo Duplicatus : spirse anfractibus carinis duabus acutis.

Gmel. Linn. Si/st. p. 3607. sp. 79.

Buccinum crassum, duobus acutis, & insequaliter altis striis in singulis
duodecim minimum spiris donatum. An. Buc-
cinum striatum ffaX7nv| Fab. Columns? ? List
LI. An. Angl. p. 160. tit. 7. tab. 3. Jig. 7.

Turbo duplicatus, doubled. Penn. Br. Zeol. No. 112. tab. 81.
fig. 112.

Strombiformis major rubro lutescens aut pullus : anfractibus duabus
carinis sive striis acutis insignitis. Bicarinatus. s.
Torcular. Da Costa. Br. Conch, p. 110. 44.—
Tab. 6. fig. 3.

PLATE CXII.

This species is admitted as a British shell upon the authority of
Dr. Lister, who says he had purchased them of the Scarborough
fishermen. Dr. Lister had not seen any of them alive, and concludes
it must be a pelagian shell, or one of those which live far from the
shores.

As Pennant had inserted this species in his British Zoology, upon
this authority, Da Costa was unwilling to omit it in his British
Conchology, yet he observes, that it is not improbable Dr. Lister
was imposed upon by the fishermen, for the shell is generally believed
to be a native of the East Indies ; some consider it as a West-Indian,
and others as an European species.

i3

\

/

\

PLATE CXIII.

MYTILUS ANATINUS.

SMALL HORSE MUSCLE.
GENERIC CHARACTER.

The hinge toothless, and consists of a longitudinal furrow.

SPECIFIC CHARACTER

A N D

SYNONYMS.

.Shell oval, rather compresse J, brittle, margin membranaceous, beaks

decorticated.

Mytilus Anatinus : testa ovali compressiuscula fragiiissima mar-
gine membranceo, natibus dccorticaris. Gmel.
Linn. Sj/st. Nat. p. 3355. sp. 16.

Musculus lafus, testa admodum tenui, ex fusco viridescens, interdum
rufescens, &c. List. II. An. Angl. p. 14-6. tit.

29. tab. 2. Jig. 29.

Musculus tenuis minor latiusculus. A pp. II. An. Angl. p. 10. tit.

30. tab. I. jig. 2.— A 'pp. II. An. Angl. in
Goad. p. 13. tit. 30. tab. I. fig. 2.

Mytuii majores a nostratibus. Horse muscles. Merret. Pin. p. 193.
Mytilus anatinus Duck. Pain. Br. Zool. No. 79. tab. 63. Jig. 79.
Mytilus fluviatilis minor. Anatinus, Da Costa Br. Conch, p. 215.
sp. 47. tab. 15. fig. 2.

PLATE CXIII.

This species bears much resemblance to Mytilus Cygneus, but
differs in being only about half the size, is more compressed and
oblong, of a clearer green colour, and the cartilage side extending
in a straight line to an acute angle, like a fin, and thence continuing
in an oblique line towards the bottom, where it is rounded. — Ex-
tremely common in rivers and stagnant waters.

Pennant's shell is much broader in proportion than our specimens.

PLATE CXIV.

SOLEN ANTIQUATUS.

ANTIQUATED SOLEN, OR RAZOR SHELL.
GENERIC CHARACTER.

Bivalve, with equal valves, oblong ; open at both ends. At the
hinge a subulated tooth turned back, often double ; not inserted in
the opposite shell. Animal an Ascidia.

SPECIFIC CHARACTER

AND

SYNONYMS.

Oval oblong, semipellucid, lower margin sinuous in the middle.

Solen Chama-Solen : testa ovali-oblonga subpellucida, sinuosa.

Da Costa. Br. Conch, p. 238. sp. 62.
Chama angustior, ex altera parte sinuosa. List. H. Conch, tab. 421.

fig. 265.
Solen Cultellus, Kidney. Penn. Brit. Zool. No. 25. tab. 46. fig. 25.

This is perhaps the rarest species of the Solen genus found upon
the British coasts, and as Pennant observes, seems to connect the
Solen with the Mva genera. It borders on the Chama of Da Costa,

PLAT E CXIV.

•who therefore calls it Solen Chama-Solen. Pennant notes it from
Weymouth, and Da Costa received it from the shores of Dorset-
shire and Hampshire.

Pennant has mistaken this for a very distinct shell, described by
Linnaeus, under the name of Solen Cultellus.

JL

\

PLATE CXV.

VENUS CANCELLATA.

MEMBRANACEOUS FENUS.
GENERIC CHARACTER.

Bivalve. Hinge furnished with three teeth ; two near each other,
the third divergent from the beaks.

SPECIFIC CHARACTER

AND

SYNONYMS.

Somewhat heart shaped with remote transverse membranaceous
ridges ; a cordiform depression on the slope under the beaks.

Venus Cancellata : teste striis transversis membranaceis remotis,
Ano cordato. Gruel. Linn. Syst. p. 3270. sp. 8.

Pectunculus strigis transversis remotis, acutis, membranaceis, donatus
Membranaceous. Da Costa Br. Conch, p. 193.
sp. 29. tab. 13. Jig. 4. right hand.

Da Costa described this shell from a specimen in the collection of
the late Dr. Fothergill. It is from the Western coast.

The shell figured by Pennant, No. 48. A. PI. 48, as a Worn
shell of Venus Erycina, is probably of this species ; for it seems en-
tirely destitute of the longitudinal undulations that decussate the
transverse ridges in Venus Erycina.

VOL. IV, b

PLATE CXVI.

OSTREA LINEATA.

LINEATED SCALLOP.

GENERIC CHARACTER.

Animal a Tethys. Shell bivalve, unequal. The hinge without a.
tooth, having a small oval cavity.

SPECIFIC CHARACTER

SYNONYMS.

Valves nearly equal, thin : one white, the other marked with a single

purple line down each rib.

Ostrea Line ata : testa subaequivalvi tenui, valva una alba, alte-
rius singulis costis linea purpurascenti.

Pectunculus, mediocris, feie aequivalvis, tenuis, valva una alba, altera
vero cum linea purpurascente in summitate una-
quaeque costs. Lineatus. Da Costa Br. Conch.
p. 147. sp. 4. Tab. \0.fig. 8.

This elegant shell seems to be described only by Da Costa ; he
«ays he was informed it had been fished up about Weymouth, in Dor-
setshire, but had only seen it from Cornwall. We have it from the
coast of Devonshire also, from which it appears an inhabitant of the
vveitern coast in general, though it is very rarely met with.

w

PLATE CXVII.

PHOLAS STRIATA.

STRIATED PIDDOCK.

GENERIC CHARACTER.

Animal ascidia. Shell bivalve, opening wide at each end, with
several lesser valves at the hinge. The hinges folded back and con-
nected by a cartilage.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell ovate, with numerous striat.

Pholas striata : testa ovata multifarium striata. Gmel. Linn.
Si/st. p. 3215. sp. 3.
Act. Angl. 55. t. \.f. 1, 2, 3, 4.
Gualt. Test. t. 105. F.

Extremely rare as a British species, and not noticed by either
Pennant or Da Costa. In the collection of the Rev. T. Rackett.

V*L. IV.

Il'd

X

PLATE CXVIIL

PHOLAS DACTYLUS.

PRICKLY PADDOCK.
GENERIC CHARACTER.

Animal ascidia. Shell bivalve, opening wide at each end, with
several lesser valves at the hinge. The hinges folded back and con-
nected by a cartilage.

SPECIFIC CHARACTER
SYNONYMS.

Shell oblong, striated transversely, and reticulated on the upper part

with little spines.

Pholas Dactylus: testa oblonga hinc reticulato-striata. Gmtl.
Linn. Sy st. p. 3214.

Pholas rostrarus major diepensis vulgo Gallice Piteau dictus. App.

H. An. Angl. in Goed. p. 37. tab. 2. fig. 3.

Pholas striatus, sinuatus ex altera parte. Hist.
Conch, tab. 433. fig. 276.— Pholas alte striatus,
ex altera parte sinuatus, eadem mucronatus, Hist.
nost. Conch. Anglice Piddocks, Gallics Pitau ;
earumque piscatories pitau quieres. Excrcit.
Anat. 3. p. 83. tab. 7. fig. 1, 2. Pholas an-
gustiua ; oblong Pierce stone or Pholade. Petii.

PLATE CXVIII.

Gaz. tab. 79. Jig. 10. — Picklocks. Bale Uarw.
p. 389. Pholas Dactyl us, Dactyle. Penn. Br.

Zcol. p. 76. sp. 10.

Pholas angustius striatus & veluti aculeatus. Muricatus. Da Costa

Br. Conch, p. 244. sp. 65. tab. 16. fig. 2. 2.

This species burrows or pierces into rocks, where it forms large
cylindrical cavities. It is not uncommon on many of our coasts, and
is sometimes eaten ; it is in season in the Spring.

)

J

J

L9

PLATE CXIX.

MUREX ANTIQUUM

ANTIQUATED MUREX,
GENERIC CHARACTER.

Spiral, rough. The aperture, ending in a strait, and somewhat
produced gutter or canaliculation.

i

SPECIFIC CHARACTER.

Tail patulous : Shell oblong, of eight spires : spiral ridges

tuberculated.

Murex Antiquus : testa patulo-caudata oblonga: anfractibus octo
teretibus. Faun. Suec. 2165. — Gmel. T, 1,
Jig. 6. p. 3546.

In the description of Plate CIX. our reafon for considering this
and Murex Carinatus as two distinct species, are briefly stated ; and
the difference, it is presumed, will be farther apparent on comparing
the two shells figured in that, and the annexed Plate.

Reversed shells of this species have been sometimes found. It is
an inhabitant of the northern parts of Europe,
VOL. IV. D

J I

"-S

PLATE CXX.

FIG. I.
BULLA APERTA.

OPEN BULLA OR BUBBLE.
GENERIC CHARACTER.

Shell suboval, Aperture oblong, very patulous, and smooth or even.

One end convoluted.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell almoft entirely open, subrotund, pellucid, and faintly striated

transversely.

Bulla Aperta : testa subrotunda pellucida transversim substriata
tota hiante. Gmel. Linn. Sj/st. Nat. T. 1.
p. 6. sp. 3424. sp. 8.

Bulla pellucida, fragilissima, tota hians, s. apertura amplissima,
Da Costa. Brit. Conch, p. 30. sp. 16.

Da Costa says, all the shells of this species he knew, were fished up
near Weymouth in Dorsetshire, and not any where else on the
British coast ; they are even not frequent there ; so that it seems a
rare as well as curious shell. — To this we may add, that they are

D 2

PLATE CXX.

rare only because they are local : in one part of the sandy bay of
Caermarthen, below Tenby, we found them in abundance.

It is called " the Bubble" by this writer; who observes that it
exactly resembles a bubble or bladder of water. The aperture is so
extremely large that the whole shell lies open to view. The contour
is somewhat oval, and slightly involuted ; and the shell is not
umbilicated.

This is certainly not Bulla patula of Pennant (Brit. Zool. No. 85. A.)
as Da Costa and Ginelin imagine. The figures in that work are
sometimes calculated to mislead the most attentive; but as we are in
possession of the shell Pennant describes, we can venture to say
the two former writers are mistaken. The species Aperta was
unknown to Pennant, and the shell he figured from the Portland
Cabinet, under the specific name of Patub, is extremely rare.

*m

FIG. II.
BULLA CYLINDRICA.

NARROW BULLA.
SPECIFIC CHARACTER.

Shell cylindric, smooth, white, and thin.

Bulla Cylindrica: testa cylindrica Isevi alba tenuissima. Gmel,

T.\. p. 6. p. 3433. sp. 38.

PLATE CXX.

This is a very scarce species on our coasts, and approaches so nearly
to Bulla pallida of Da Costa (Voluta pallida. Linn.) described and
figured in Plate LXV1. of this Work, that it may easily be
confounded with it, unless the two shells be compared. Bulla
Cylindrica differs in being rather more compressed, and has the pillar-
lip perfectly smooth ; while on the contrary the other has plaits or
wrinkles upon this part as before observed : a circumstance that
constitutes one character of the Yoluta genus in the system of
Linnaeus.

In the description of the Voluta pallida we were led to think
with Da Costa, that the shell figured by Pennant in the British
Zoology, No. 85. A. might be of the same species. Since that
time we have been favoured with the specimen figured in the annexed
Plate; and as it seems to correspond more clearly with Pennant's
shell than the other, there can be no impropriety in removing the
reference from the former to the prefent species. Gmelin takes
not the slightest notice of this figure of Pennant ; so that we must
remain ignorant of his opinion respecting it. And it is certain the.
shell before us was altogether unknown to Da Costa,

D %

10.1

X

PLATE CXXI.

VENUS UNDATA.

IVAVED VENUS.

GENERIC CHARACTER.

Bivalve. Hinge furnished with three teeth ; two near each other,
the third divergent from the beaks.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell orbiculated, convex, 'thin, transversely marked with very fine
stria?, and waved at the margin.

Venus Undata: testa orbiculata convexa tenui transversim subti-
lissime striata margine undata.

Venus Undata, waved.— With thin, convex, orbiculated shells,
of a white colour, tinged with yellow, and
marked with thin concentric stria ; waved at the
edges. Perm. Brit. Zeol. 4. sp. 51.

There can be no doubt that the shell figured and defcribed by
Pennant in the fourth volume of his British Zoology, No, 51, is of

D 4

PLATE CXXI.

the fame fpecies as our shell. That author says it is the size of a
hazel nut, from which it appears the fpecimen he faw was a young
Shell ; the largest of our specimens being of the size represented ia
the annexed Plate.

This is Venus laciea of some cabinets, a name sufficiently ex-
pressive of its colour, but having been before called Undata by
Pennant, we thought it best to retain the name he had given it.

X2.2.

PLATE CXXII.

MYA OVATA.

OVATE MYA.

GENERIC CHARACTER.

Animal an afcidia. Shell bivalve, gaping at one end. The hinge
for the most part furnished with a thick, strong, and broad tooth, not
inferted in the opposite valve.

SPECIFIC CHARACTER.

Shell oblong-ovate; posterior part roundish, and very slightly gaping ;
first tooth at the hinge crenulated.

Mya ovata : testa oblongo-ovata, postice rotundata vix hiante, car-
dinis dente primario crenulato.

This is the Shell alluded to in the description of Plate 101, under
the name of Mya ovata. The difference between it and Mya depressa,
as before observed, seems to consist in the present being more ovate,
and not depressed across the middle : nor is the gaping at the broadest
end so considerable as in the other.

These, we have already remarked, inhabit the same waters as Mya
depressa, viz. in the New River, near London, and the Froomc in

PLATE CXXII.

Somerfetshire. It is a thick, strong and heavy Shell, of a greenish
colour, and radiated. — The smallest figure in the annexed plate is a
brown coloured specimen of Mya depressa.

— -

A

\

PLATE CXXIII.

TELLINA INiEQUISTRIATA.

UNEQUALLY-STRIATED TELLEN.
GENERIC CHARACTER.

The hinge usually furnished with three teeth. Shell generally sloping

on one side.

SPECIFIC CHARACTER.

Shell ovate, compressed and rather flatfish, rosy, very finely striated
transversely: the striae fewer and larger at the anterior end.

Tellina iNiEQUiSTRiATA : testa ovata compresso-planiuscula rosea
subtilissime transversim striata : strns antenus
paucioribus majoribusque.

A very rare species of Tellina communicated to Da Costa after his
Conchology was published, and therefore not noticed in that work.
It has been found by the late Dr. Pulteney we believe on the coast
of Dorsetshire.

PLATE CXXIV.

*

FIG. I.

ARDIUM EDULE.

COMMON COCKLE.
GENERIC CHARACTER.

Two teeth near the beak ; and another remote one, on each side of

the shell.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell antiquated : about twenty-six grooves, with obsolete recurved

scales.

Cardium edule : testa antiquata; sulcis viginti sex obsolete re-

curvato imbricatis. Limis—Gmel. T. I. p. 6.

p. 3252. sp. 20.
Pectunculus vulgaris, albidus, subrotundus, circiter viginti-sex

striis majusculis at planioribus donatus. Da Costa,

Brit. Conch, p. 180. sp. 19.
Cardium Edule, Edible Cockle. Pi-mi, Brit, Zool NoAl. tab, 50.

fg.U.

PLATE CXXIV.

The Common Cockle is abundant on all sandy shores : they lurk
in the sand, and their hiding-place is known by a little round depressed
spot upon the surface. Cockles are in season from autumn till spring:
they are a wholesome and palatable food; and thofe from Selfea,
near Chichester, are esteemed the most delicious in England.

These Shells vary a little both in shape and colour : the two fpe-
cimens figured on the annexed Plate differ, one being more orbicular
than the other. They are generally whitish, sometimes they have a
blueish, and sometimes a yellowish tint.

FIG. II.
CARDIUM RUSTICUM?

SPECIFIC CHARACTER.

Shell antiquated, with about twenty remote grooves : the interftices

rugged.

Caroium rusticum : testa antiquata : sulcis viginti remotis ; in-
terstitiis rugosis. Gmelin, T. 1. p. 6. p. 3252.
sp. 23 ?

Notwithstanding the endless variations to which the shells of the
common Cockle are liable, this appears too remote to be admitted as
one of them. It passes for Cardium rusticum with some concholo*
gifts, and though it may not strictly agree with that specific descrip-
tion of Gmelin, it approaches nearer to it than to edule. That author

PLATE CXXIV.

notices the affinity rusticum bears to the other species ; but observes
that the grooves are deeper and the ribs fewer, and more convex in
rusticum : he remarks also that the latter has a ridge on the anterior
margin when the valves are closed, and a narrow depressure behind
the beaks, " ano evidente, sed angusto," which is not in the other.
The grooves in our Shell are not so deep as " sulcis profundioribus"
implies, but they are both deeper and wider than in the common
sort ; the ribs are rather more convex also, fewer in number, and
rugged, as Gmelin describes it. — The colour exactly corresponds :
he says it is sometimes ferruginous, with livid bands and sometimes
white, with the anterior part fuscous : another variety of it is white,
fasciated with a ferruginous yellowish or blueish colour.

125

PLATE CXXV.

MACTRA GLAUCA.

GLAUCOUS MACTRA.

GENERIC CHARACTER,

t

Animal a Tethys, Bivalve, sides unequal. Middle tooth compile
cated, with a little groove on each side ; lateral teeth remote.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell ovate, sordid white with brown (or glaucous) rays : very
finely lariated transversely, and wrinkled on the anterior end.
Mactra Glauca : testa ovata sordide alba glauco radiara sub-

tilissime transversim striata anterius rugosa. Gmel.

T. I. p. 6. p. 3260. fp. 20.
Chemn. Conch. 6. t. 23./. 232, 233.

This is a new species as a British shell ; and the conchologist is
indebted to Miss Pocock for the discovery of it on our coair. The
attention with which this lady has honoured the science has not been
rewarded by this new species only : we have been favoured ■
several others, besides many rare kinds that have

VOL. IV. E

PLATE CXXV.

her on different parts of the sea-coast, and especially on that o:
Cornwall, as will appear hereafter. A few shells of the species before
us were met with by her in the summer of 1801, on Hale sands under
Lelant in that county, and it is said by the country people they are
at times found on that coaft in some plenty.

Though hitherto unknown as a British shell, it has been before
discovered in the Mediterranean sea ; for there can be no hesitation
in admitting it to be the shell figured by Chemnitz, as above quoted.
Gmelin refers to the two figures in that Work, No. 232, and 233,
for his species glauca ; and the description corresponds in general
with them, though not exactly in the colour of the rays. — Gmelir}
has another species of Mactra, grandis, which we at first suspected
to be the same as our shell. It agrees precisely in the colour of
the rays, but from the figure in Chemnitz's work, quoted by Gmelin
for that species, these rays, it appears, are far more minute, than in
our shell, and are also decussated by others in a concentric direction j,
s— the outline of the Jatter is also different*

L2.6

PLATE CXXVL

MACTRA SUBTRUNCTA.

SUBTRUNCATED MACTRA.
GENERIC CHARACTER.

Animal a Tethys. Bivalve, sides unequal. Middle tooth complicated,
with a little groove on each side : lateral teeth remote.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell somewhat triangular, whitish, smooth, subtruncated o»

each side.

Mactra subtruncata : testa subtriangularis, albescens, laevis

lateribus subtruncatis.
Trigonella albescens lawis, lateribus subtruncatis. Subtruncata, Dd

Costa. Brit. Conch, p. 198. No. 34.

A thick, strong, and heavy shell, of a somewhat triangular shape,
and much flattened on each side, obliquely from the beaks : the
valves rather convex, the beaks pointed strong, and turned inwards.

PLATE CXXVI.

The colour is pale or whitish, and it is externally marked with nu-
merous fine concentric striae.

Received from Hampshire and Devonshire ; but not common.
Found in a fossil state in the sand pits at Woolwich.

1-

PLATE CXXVII.

TROCHUS PAPILLOSUM

SHAGREENED TOP SHELL.
GENERIC CHARACTER.

Animal a slug. Shell conic. Aperture nearly triangular.

SPECIFIC CHARACTER.

Pyramidal, umbilicated, red ; whorls with several rows of minute

granulations.

Trochus Papillosus : pvjamidalis umbilicatus ruber, series papil-
larum <i(>natus. Da Costa. Brit. Conch, p. 33.
No. 20.

'Cul de lampe a flammes longitudinales, alternatives blanches et rou-
ges, a stries granuleuses et umbilique : et cul de
lampe marbre de blanc et de rouge, a stries cir-
culaires granuleuses et tuberculeuses. D% Avilat
cab. \.p. 127, 128.

Da Costa acquaints us that he received " some few of these shells
from Cornwall (in a great quantity of others, natives of that coast)
by an intelligent gentleman of veracity and curiosity ; but" adds that

E3

PLATE CXXVII.

writer, " must own I have never met with this species since on any
other British coasts." We have since seen it among parcels of shells
from the Mediterranean, and also find that it has been discovered by
the late Dr. Pultney, on the North shore, Poole ; and at Weymouth.

The specific character of the Gmelinian Trochus Granatum,
seems to accord very nearly with -our shell *, but it is about twice the
size, and inhabits the Southern Ocean ; and it is certainly more pro-
bable, as some conchologists have suggested, that it is the variety of
Trochus Zizyphinus, described by Linnasus in the Mils. Reginay
as being " tota pallida, anfractibus basi gibbis, striatis, subtitissime
punctis papilloris." It differs from Zizyphinus in having the anfrac-
tus a little rounded, and the wreaths being encircled with granulated
spiral ridges. The name Da Costa has already given it, is very ap-
plicable ; and as it has undoubtedly escaped the notice of Gmelin,
there can be no impropriety in retaining it. — It is evidently one of the
rarest British species of the Trochus genus.

* Testa pyramidali alba coccineo varia basi subconvexa ; spirae anfractibus convexis:
singulis grar.oram moniformibus, primis duobus maximis. Gmel. 3584. ip. 108.

128

PLATE CXXVIII.

FIG. 1. 1.

MYTILUS EDULIS.

COMMON MUSCLE.

#

GENERIC CHARACTER.

The hinge toothless, and consists of a longitudinal furrow.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell smoothish, violet : valves slightly carinated in front, retuse

behind : beaks pointed.

MYTILUS EDULis : testa Iseviuscula violacea : valvis anterius sub*

carinatis posterius retusis, natibus acuminatis.

Fn. Senc. 2156. Gmcl. Linn. Sj/st. Nat. T. I,

p. 6. p. 3353. Sp. 11.
Mvtilus vulgaris. Musculus vulgaris subtaevis ex cseruleo nigcr.

Common Muscle. Da Costa Brit. Conch.

p. 216. fp. 48.
Mytilus Edulis, Edible. Penn. Brit. Zool. T. 4. p. 1 10. fp, 73.

E 4

PLATE CXXVIII.

Few species of the shell tribe are more generally diffused through-
out the European and Indian seas than the Mytilus edulis ; and few
indeed exhibit such an infinite number of varieties, differing in size,
in form, and colour ; but which the critical Conchologist will yet
perceive cannot with propriety be assigned to any other species.

On the Plate annexed to this description, one shell of the shape
more uniformly prevalent is figured in its natural state, and another,
which, having been divested of the epidermis, displays a beautiful
variety of irregular purple stripes : an appearance very common in
the uncoated shells, and in some sorts observable even when the epi-
dermis is upon them. The upper and lower figures are of two
shells, which, we are inclined to think, differ too widely from the
common kind to be considered as a variety: the outline appears at
the first sight obviously dissimilar ; and the characters in general
seem to mark most decidedly another species. They are both worn
shells, but which we have compared with perfect specimens of My-
tilus ungulatus, and apprehend there can be no doubt that they
belong to that species.

Within the tropics, the common Muscle is known to attain a
much larger size than in northern climates. They are found in im-
mense beds, and adhere to other substances, or to one another, by
means of a beard of a strong and silky texture, which the fish throws
out. The Muscle affords a rich and palatable food ; though they
are not deemed wholesome by many peopJe, who after eating them
are sometimes afflicted with great swellings and convulsive motions.
with eruptive blotches, shortness of breath, and even with delirium.
These dreadful effects are usually attributed to some malignant poison
in the little pea crab which is occasionally found in the Muscle, and

PLATE CXXVIIT.

may be accidentally eaten with it : others think it is in consequence
of swallowing the silky byssus, or beard ; and again many deem the
Muscle itself poisonous. It is, however, pretty generally agreed,
that they affect some constitutions more than others, and that much
depends on the state of the body at the time of eating them. The
disorder may be cured, or at least its malignity mitigated, by ad-
ministering to the affected person a spoonful of vinegar : some re-
commend sweet oil, or salt and water. Da Costa observes that su-
dorifics, vomits, oils, <kc. are the usual remedies ; and the Dutch
give two spoon's-full of oil, and one of lemon-juice ; or, in defect of

that, a little more vinegar, well shaken together, and swallowed
immediately.

The Muscle is the prey of many kino's of fishes, and other crea-
tures that inhabit the sea. On the coast of Greenland, Fabricius
tells us, they are so abundant, that the dogs and ravens commonly
feed on them ; as do also the white game, (Ptarmigan) Eider Duck,
and many others.

The seed-pearls found in the shell of the Muscle was formerly in
some esteem, for medicinal purposes : these, it is well known, are
the effects of a disease in the fish, analogous to the stone in the
human body.

Mr. Pennant informs us, that the finest Muscles on the English
coasts (where they are found in great abundance) are those called
Hambleton Hookers, from a village in the county of Lancashire.
They are taken out of the sea, and placed in the river Wier, within
reach of the tide, where they grow very fat and delicious.

PLATE CXXVIII.

FIG. II. II.
MYTILUS UNGULATUS.

CLAWED MUSCLE.
SPECIFIC CHARACTER

ANII

SYNONYMS.

Shell smooth, somewhat curved : posterior margin inflected : hinge

terminal, bidentated.

Mytilus ungulatus : testa laevi subcurvata : margine posteriori
» inflexo, cardine terminali bidentato. Linn. —

Gmcl. Sj/st. Nat. T. I. p. 6. p. 3354. Sp. 12.

Several shells of this kind were picked up by Miss Pocock, on the
coast of Cornwall. It was before known as an inhabitant of the
Mediterranean, but not as a British species.

Fig. II. II. — Upper and lower Figures.

11,)

PLATE CXXIX.

PATELLA ALBIDA.

WHITISH CHAMBERED PAP-SHELL,
GENERIC CHARACTER.

Animal a Limax : shell univalve, sub-conic without spire.

SPECIFIC CHARACTER.

Shell fragile, entire, subrotund, whitish ; vertex somewhat central,
and slightly pointed ; lip within lateral.

Patella albida : testa fragilis integerrima subrotunda albida

vertice subcentrali submucronato, labio interio
laterali.

This rare and nondescript species of Patella was found on the
coast of Cornwall, and communicated by the lady who favoured us
with Mactra glauca, and Mytilus ungulatus. It differs from any of
the described British shells of this genus, in having an inner lip or
chamber, such as is observed in several of the exotic kinds, belonging
to the first section of the genus inGmelin's arrangement ; " Labiatas
s. labio interno instructs, testa integra."

It is an exquisitely delicate shell, and remarkably brittle : there is a
specimen of this shell in the collection of William PUkington, Esq;
Whitehall.

i:>, o

^

A

m

PLATE CXXX.

VENUS BOREALIS.

NORTHERN VENUS,
GENERIC CHARACTER.

Hinge furnished with three teeth ; two near each other, the third

divergent from the beaks.

SPECIFIC CHARACTER,

AND

SYNONYMS.

Shell lentiform, with very remote transverse, erect, membranaceous

striae.

Venus Borealis : testa lentiformi : striis transversis membranaceis

erectis remotissimis. Gmel. Linn. Si/st. Nat,
T. I. p. 6. p. 3235. sp. 77.

This is a scarce, or very local shell on the British coasts, and seems
to agree with the description of the Linnasan Venus borealis. The
species was unknown to Da Costa, and is different from that which
Mr. Penant describes under the same name.

PLATE CXXX.

We first discovered it on the coast of South Wales ; and since
that time have received it from Miss Pocock, by whom it was found
on the coasts of Cornwall in some plenty.

73*

PLATE CXXXL

HELIX HORTENS1S.

GARDEN SNJIL.
GENERIC CHARACTER.

Aperture of the mouth contracted and Iunulated.

SPECIFIC CHARACTER

ANO

SYNONYMS.

Shell imperforate, globose ; spotted and fasciated with brown: lip

white.

Helix Hortensis : testa imperfo rata globosa: labro albo. Mull.

Zool. Dan. — Gmel. Linn. Sj/st. Nat. T. I. p. Q.

p. 3649. sp. 109.
Cochlea vulgaris fusca, maculata &: fasciata. Vulgaris. Da Costat

Brit. Conch, p. 72. sp. 39.
Helix Hortensis. Garden Snail. Penn. Brit. Zool. No. 129.

tab. 84. fig. 129.
Helix Lucorum. Linn.

The Common Garden Snail is, we think, without doubt, the Helix
^ucorum of Linnaeus, and most other writers. Gmelin calls it hor-

PLATE CXXXI.

tensis, and defines the specific character of lucorum to be " testa
imperforata subrotunda Isevi fasciata : apertura oblongo fusca." It
more generally inhabits the southern parts of Europe ; is larger, and
whiter than hortensis ; and the lip is brown.

This is a most variable species in its colours and markings, and it
may still be doubted whether hortensis and lucorum be perfectly
distinct. They have certainly been confounded by almost every
Conchologist.

On the manners of a creature which is so generally known, as
the Common Garden Snail, it is surely needless to enlarge : its mode
of courtship is, however, so curiously related, that it should not en-
tirely escape remark ; and were it not attested by writers of the first
authority, with the reader, we might be guilty of no small degree
of scepticism, as to believing it. Each of these animals, it seems,
are furnished, at a certain season, with a number of little pointed
darts, which are contained within a cavity on the right side
of the neck. When the Snails approach within two or three
inches of each other, a scene of hostility is observed to com-
mence : each discharging at its antagonist these darts, with con-
siderable force, at the other ; this battle continues till the reservoir
be exhausted of these offensive weapons, and then a perfect re-
conciliation takes place between them. . The eggs are about the size
of peas, and perfectly round.

Snails are used with success in some consumptive cases, and an
excellent cement, to fasten china, may be made of the saliva, or hu-
mours, mixed with quick lime and white of eggs, according to

PLATE CXXXL

Lister, See. It feeds on all kinds of vegetables and fruits, and is con-
sequently very destructive in orchards and gardens. Snails couple
about May or June.

VOL. IV.

,'32.

PLATE CXXXII.

PHOLAS CANDIDA.

WHITE PJDDOCK.
GENERIC CHARACTER.

Animal Ascidia. Shell bivalve, opening wide at each end, with
several lesser valves at the hinge. The hinges folded back and con-
nected by a cartilage.

SPECIFIC CHARACTER,

AND

SYNONYMS.

Shell oblong, muricated with striae crossing each other.

Pholas Candida : testa oblonga undique striis decussatis muricata.

Mus. Lud. Ulr. 469. n. 7. — Gmel. Linn. Si/st.

Nat. T. \.p. 6. p. 3215. sp. 4.
Pholas tenuis- candidus ovatus decussatim striatus. Candidus. Da

Costa. Brit. Conch, p. 246. sp. 66.
Concha Candida, dupliciter striata et veluti aculeata. List. II. An.

Angl. p. 193. tit. 39. tab. 5. fig. 39. — Pholas

alter. App. II. An. Angl. in Goed. p. 37.

tab. 2. fig. 4 and 6. — Pholas parvus asper. H,

Conch, tab. 435. fig. 218.
Pholas latus; short Pierce-stone or Pholade. Petiv. Gaz. tab. 79.

} #.".

Pholas candidus. Penn. Brit. Zool. T. 4. No, 11. tab. 3d,fig. 11.

PLATE CXXXII.

The Pholas Candida is rather a scarce species, and differs from P.
Dactylus (hians of Dr. Solander) in not being above one fourth of its
size : of a more oval shape, and having both ends equally rounded ;
in other respects it resembles it. Da Costa seems to entertain some
doubt whether it may not be really a variety in growth, than a dis-
tinct species from Dactylus. It is found on the same coasts as the
latter.

.m

a"

PLATE CXXXIII.

SABELLA TUB1FORMIS.

STRAIGHT TUBE SABELLA, OR SAND SHELL.
GENERIC CHARACTER.

Animal a Nereis, with a ringent mouth, and two thicker tentacula
behind the head. Shell tubular, and composed chiefly of sand, agglu-
tinated to a membranaceous tube.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell solitary, simple, tube-shaped, straight ; gradually tapering ; and

composed of brownish sand.

Sabella tubiformis : testa solitaria simplici tubiformi recta sen-
sim attenuata : granis arenaceis fuscis.

Sabella granulata. Linn. 1268 ? — Martini, 4. /. 4. 28 ?

Sabella tubiformis. Tube Sabella. Penn. Brit. Zool. 4.
sp. 163.

Straight Sabella. Pult. Hist. Dorset.

The Sabella tubiformis of Pennant is believed by some concholo-
gists to be the same species as Linnaeus names granulata, but this
must certainly admit of doubt: the latter, from the description, ap-

VOL. IV. g

PLATE CXXXIII.

pears to be slightly incurvated, whilst Pennant's shell is perfectly
straight ; a difference, perhaps, sufficient to constitute two distinct
species. Martini figures a kind of Sabella, which he considers as
the S. granulata of Linnaeus, and in that figure the curvature at the
narrowest end is very apparent : with Martini we consider that as
the true Sabella granulata of Linnaeus, and not having observed the
same character in any of those shells that have occurred to notice on
our own coasts, have thought it most adviseable to retain the name
Mr. Pennant had previously given it.

Gmelin seems to be under some doubts respecting this shell, for
he entirely omits the Linnaean granulata among the species of this
genus. — Sabella Belgica of Gmelin, which some have conjectured
to be the S. tubiformis of Pennant, is undoubtedly different, ac-
cording to Klein and Martini.

Our shell is of an elegant form and remarkably delicate : it con-
sists of two coatings, the inner one of which is composed entirely
of grains of sand, and the outer one of sand intermixed with little
fragments of shells. This kind is local : it is supposed to inhabit
deep waters only, and is sometimes found upon the shore after a
high sea.

/

PLATE CXXXIV,

CHAMA COR.

HEART-SHAPED CHAMA.
GENERIC CHARACTER.

Animal a Tethys. Shell bivalve, and rather coarse. Hinge with
a callous gibbosity, obliquely inserted into an oblique hollow : ante-
rior slope closed.

SPECIFIC CHARACTER

AND

SYNONYMS.
/

Shell subrotund, and smooth : beaks recurved : anterior slope

gaping.

Chama Cor : testa subrotunda la?vi : natibus recurvatis rimahiante.

Mus. Lud. Ulr. 516. ra.88. — Gmel. Sj/st. Nat.
T. 1. p. 6. p. 3299. sp. 1.

As an inhabitant of the Mediterranean, the Adriatic, and Caspian
sea, this curious shell has been long since known ; but as a British
species has not been before described. It was discovered several years
ago in the seas about the islands in the North of Scotland, by Mr.
Agneu, Gardener to the late Duchess of Portland ; and since that

G 2

PLATE CXXXIV.

time, a specimen of it was dredged up, by T. Swainson, Esq. of the
Custom-house, London.

It is a delicate shell, and represented in the annexed plate of the
natural size. By some it is called the BulPs-heart Cockle, but very
improperly, because it cannot be considered in any manner of the
Cardium genus.

ns

''- 'I.!.';!! i

iz£z

%

PLATE CXXXV.

ARCA LACTEA.

MILKY-WHITE ARK.

GENERIC CHARACTER.

Bivalve, valves equal. Teeth of the hinge numerous, and inserted

between each other.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell somewhat rhombic, with obsolete, decussated striae, and

diaphanous.

Arca lactea : testa subrhomboidea obsolete decussatim striata

diaphana. Gmel. Linn. Sj/st. Nat. T, I. p. 6.

p. 3309. sp. 15.
Arca lactea: testa subrhomboidea obsolete decussatim striata

diaphana, natibus recurvis, margine crenulato.

Linn. Sj/st. Nat. p. 1141. No. 173.
Pectunculus exiguus albus, admodum tenuiter striatas. List. H»

Conch, tab. 235. Jig. 69.
Mytulus Garnseiae albus, parvus tenuiter cancellatus. Petiv. Gaz.^

tab. IZ.jig. 1.

C3

PLATE CXXXV.

Area. Parva alba cancellata. Lactea. Da Costa Brit. Conch.

p. 171. sp. 14.
Arca crinita. Soland. Mus. Portland.

Pultney. Nat. Hist. Dor sets.

There does certainly exist among conchologists a strange dis-
cordance of opinion, respecting the species of Arca before us : some
believing it to be the very shell which Linnaeus described under the
name of lactea, and others maintaining the contrary. Dr. Solander,
and Dr. Pultney, were persuaded that Linnaeus intended a shell in
some particulars not unlike this, but specifically different : the same
shell in fact which Lister figures No. 67, in his Conchology. The
opinions of two such respectable naturalists deserve every considera-
tion, but however we may be disposed to abide by their authority in
some instances, we cannot, for the following reasons, assent to it in
the present.

Dr. Pultney premises his description by naming this species Arca
crinita, a name which it appears Dr. Solander had previously given
to it, in his catalogue of the Portland Museum : he observes very
justly, that it is the A. barbata of Pennant, but not the barbata of
Linnaeus: refers to Da Costa's figure, Plate 11, fig. 5 ; and calls it
in English the Hairy Ark-shell. His description is in these
words, " A small oblong subrhomboidal shell: in its recent state
covered with a brown epidermis. Underneath the shell is minutely
striated in the longitudinal direction ; commonly not much larger
than a horse-bean. I found one on the North shore at Poole, more
than half an inch long, and seven-eights wide. It is said to be
more frequent on the shores of Guernsey island ; but is very rare oa

PLATE CXXXV.

our coasts. This shell has commonly been described as the A. lactea
of Linnaeus ; but that shell is much larger, and is strongly striated
in a reticulated manner."

In the first place, this does not so clearly agree with the Linnaean
description as might be expected. In the early editions of the Sy sterna,
Naturte, Linnaeus expressly describes his shell as being of a sub-
rhombic form, with obsolete decussating striae, diaphanous, with re-
curved beaks, and crenulated margin ; and the only alteration in the
specific character to the last edition of that work, by Gmelin, is, that
the beaks and margins are not mentioned. It hence is evident that
Dr. Pultney is mistaken in the Linnaean lactea, when he says it is
strongly striated in a reticulated manner ; for Linnaeus exactly de-
scribes it as having the reticulating striae obsolete ; and notwith-
standing that the longitudinal striae in the shell found on our coast
are rather prominent in some specimens, they far more frequently
appear altogether obsolete, and are decussated by fine transverse striae,
precisely as Linnaeus mentions. There is another circumstance
equally remarkable, Linnaeus exactly tells us his lactea is the size of
a horse-bean, and Dr. Pultney, after observing that his British shell
crinita " are commonly not much larger than a horse-bean," adds,
that the lactea of Linnaeus is " much larger."

That there may have been some erroneous references among
aiithors to the two shells figured by Lister, No. 67 and 69, of which.
we are not aware, is not impossible, but Gmelin refers to List.
Conch. 69. A. T. Guernsey, for the Linnaean lactea, and that
shell clearly corresponds both with our specimen, and the shell
described by Linnaeus, pectunculus exiguus albus admodum tenuiter
striatis. List. — Petvver is equally satisfactory, Mytilus Gamseiae

G 4

PLATE CXXXV.

albus, parvus tenuitcr cancellata. Da Costa is not so very clear, nor
is his figure expressive, because it represents the transverse ridges too
prominent. Chemnitz gives a larger specimen of it than any we
have seen ; and notwithstanding his references to Da Costa and

others, may not be of the same species. The shell figured by

Lister, No. 67, which seems to have occasioned the confusion before
alluded to, it should be observed, is described by Gmelin, in these
words : testa subrhomboidea decussatim striata alba : natibus approxi-
mates, vulva cordata, Area reticulata.

Hence it is presumed the shell found on our coast ought still
to be considered as the Area lactea of Linnaeus, and that the shell
which is strongly striated in a reticulated manner, and so much
larger ; and has been hitherto regarded by some as that species,
was never described, or even noticed by Linnaeus. Nothing
can be more evident than that this is the opinion of his editor
Gmelin, both from his references to the figures of lactea, and by his
giving a new name and character to that very shell in Lister which
has been mistaken for it, and which he conceived Linnaeus had
omitted.

This kind is generally considered as an inhabitant of Dorsetshire,
Devonshire, and Cornwall.

lib

PLATE CXXXVI.

HELIX ARBUSTORUM.

SINGLE-STREAK SNAIL.
GENERIC CHARACTER.

Aperture of the mouth contracted and lunulated.

SPECIFIC CHARACTER.

Shell umbilicated, convex, aperture somewhat orbicular, lip reflected,
with a single dark spiral band.

Helix ArbusTorum: testa umbilicata convexa acuminata, aper-

tura suborbiculari bimarginata : antice elongata,
Linn.Sj/st. Nat. p. 1245. No. 680.

Cochlea testa utrinque convexa subcinerea : fascia solitaria grisea,

labro reflexo. Linn. Fn. Suec. 1 . p. 370, No.
1295. II No. 2184.

Cochlea maculata, unica fascia pulla, angustioreque, per medium an-
fractus, insignita. List. H. An. Angl. p. 119.
tit. 4. tab. 2. jig. 4.

Cochlea subflava maculata atque unica fascia castanei colons per me-
dium anfractus, insignita. Phil. Trans. No.
105. Jig. 4.

PLATE CXXXVI.

Cochlea subumbillcata, maculata, unica fascia angusta, per medium
anfractus insignita. Unifasciata, single streak,
Da Costa. Brit. Conch, p. 15. sp. 40.

Helis arbustorum. Shrub. Penn. Brit. Zool. No. 130. tab. 85.
fig. 130.

Like the two species of Helices, nemoralis and hortensis, this shell
varies exceedingly in its colours and markings in different shells ; but
the single narrow spiral band very uniformly distinguishes it from any
other. According to Lister and Petiver, it is found in shady hedges,
and is frequent in rushy, moist, or marshy meadows. Da- Costa
says, it is also found in coppices and shrubberies ; but, from his own
observations, it is not a common kind : we have seen it in woods,
though not often.

It may deserve remark, that this shell is generally found empty.
Muller accounts for this, by acquainting us, that the animal is the
prey of young Newts. Sometimes when the animal is living, the
shell is of a light chesnut colour, finely marbled, mottled, or other-
wise variegated, with a deep chocolate coloured brown.

137

PLATE CXXXVIL

OSTREA JACOB^A.

PILGRIM OTSTER, OR SCALLOP.

■

GENERIC CHARACTER.

Animal a Tethys. Shell bivalve, with the valves mostly unequal
and slightly eared. Hinge without teeth, but furnished with an ovate
hollow, and in general lateral transverse furrows.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shells with fourteen angular and longitudinally striated rays.

Ostrea JacobtEA : testae radiis quatuordecim angulatis longitudi-
naliter striatis. Linn. — Gmel. Syst. Nat. p.
3316. sp. 2.

Pecten magnus inasquivalvis operculo fubrufo, fornix vero albus

costis angulatis et canaliculars. Jacob<eus. Da
Costa Brit. Conch, p. 143. sp. 2.

P. JacoB^eus Lesser. Penn.Brit, Zool. No. 62. tab. 60. fig. 62.

This large and handsome kind of Scallop is rare on the English
coasts : in the Mediterranean it is more frequent, and from that

PLATE CXXXVII.

that circumstance, is supposed to be the same species as was formerly
worn by pilgrims, who visited the holy-land. Da Costa received it
from Scarborough in Yorkshire, and also from the coasts of Cornwall
and Dorsetshire. Dr. Pultney remarks, that it is rare on the Dorset-
shire coast, but has been fished up at Weymouth and at Poole.

The upper valve is of a reddish brown, flat, and rather depressed
at the beak : the depression is generally white, and mottled, or other-
wise marked with brown, or dusky red ; and often with prettily dis-
posed marks, resembling the heads of arrows. The under valve is
usually white, or faintly tinged with brown, and has the rays re-
markably prominent and angular ; a character by which it may be
easily distinguished from the Common Scallop, Ostrea maxima,
which greatly resembles it, but in which the rays are rounded.

lOfj

%

$

$

PLATE CXXXVIII.

VOLUTA TRIPLICATA.

THREE PLAITED VOLUTE.
QENERIC CHARACTER.

Animal Limax. Shell spiral, narrow, without a beak : columella or

pillar, twisted or plaited.

t

SPECIFIC CHARACTER.

Shell ovate, smooth and brown : spire rather pointed : whorls six :

pillar with three plaits.

Voluta triplicata : testa ovata laevi brunnea, spira acutiuscula :
anfractibus sex, columella triplicata.

Turbo sex anfractibus apertura ovali bidentata. Walker. Test. min.

rar. jig. 50 ?

This curious little Volute has not we believe been either figured
or described by any Author. In its general appearance it approaches
pretty nearly to the shell figured by Walker, as above quoted ; but
if the same, that writer has certainly described it with no very great
degree of accuracy ; for he speaks only of two plaits, or teeth in the

PLATE CXXXVIII.

aperture, and calls it the double-toothed Turbo ; although from its
plaited pillar, it is evidently a Volute : and the third plait, which with
the two others, characterize the species, is obviously too large to have
been overlooked. Da Costa, we are persuaded, thought they were
both the same, for in a MS. note attached to this shell in his collec-
tion, he says, " This shell is figured by Walker," and certainly no
figure in the volume of that Author corresponds with it, except that
to which we refer above.

Walker speaks of his shell as being very common on the roots of
rushes, in marshes, near Faversham : The habitat of our shell we
have not been able to ascertain, having never found it in a living
state.

PLATE CXXXIX.

SABELLA ALVEOLATA.

i

HONEY-COMB SABELLA, OR SAND SHELL,

GENERIC CHARACTER^

Animal a Nereis, with a ringent mouth, and two thicket tentaculas
behind the head. Shell tubular, and composed chiefly of sand, agglu-
tinated to a membranaceous tube.

SPECIFIC CHARACTER

AND

SYNONYMS.

Composite, consisting of numerous parallel tubes, with somewhat

funnel-shaped aperture.

Sabella alveolata : testa composita concamerationibus nume-

rosis : aperturis sub-infundibuliformibus.
Sabella alveolata : testa composita concamerationibus nume-

rosis poro communicantibus. Gmel. Linn. Sj/st.

Nat. T. 1. p. 6. p. 3749. Sp. 3.
Sabella alveolata, Honey-comb. Penn. Brit. Zool. Vol. 4.

p. 147. sp. 162. — Ellis Coral, p. 90. t. 36.

PLATE CXXXIX.

"We have constantly observed this kind of Sabella to be an inha-
bitant only of low rocky shores, that lie within reach of the tide at
high water ; and although it is composed entirely of broken shells and
sea sand ; and those apparently very slightly agglutinated by the ani-
mals that form and inhabit it, in its native element it acquires a con-
siderable comparative degree of tenacity from the saline particles with
which it is impregnated, and is capable of resisting the reiterated
dashing of the waves without material injury.

In the more sheltered crevices of the rocks, where the animal has
ample scope to expand its sandy dwelling secure from mutilation, the
upper surface of a mass of these shells has a very elegant appearance ;
the whole being beautifully foliated with the single or bipartite funnnel-
shaped lip, which each animal forms at the opening of his cell. This
appearance is represented in the plate subjoined, and is a circumstance
the moredeserving attention, because ithas entirely escaped the notice of
Mr. Pennant, and perhaps of every other Naturalist, except Mr. Ellis ;
who in his History of Corals, figures it with a foliated surface, under
the title of Tubularia arenosa anglica, from a specimen brought from
Dieppe. The latter does not however agree precisely in figure with
any that have occurred to our notice. Mr. Pennant evidently represents
a poor mutilated fragment, in which the openings of the cells are
shewn like so many rounded perforations, in a somewhat uneven sur-
face, and is just as it appears in masses on the sea-beach, that have
been trodden under-foot ; or pieces that have been much worn, ancj
thrown loose upon the shore.

These shells are three or four inches in length, and where they are
found are generally abundant, but they seem to be very local. Mr.
Pennant says it is found on the Western coasts of Anglesea, near Cric-

PLATE CXXXIX.

ceth in Caernarvonshire, and near Yarmouth. We have seen it on
other parts of the sea coast of North Wales, and in equal plenty
on those of South Wales likewise. On the coast of Dorsetshire,
according to Dr. Pultney, fragments are found very frequently, but
none very perfect. In the History of that County the following ac-
count is given of it. — " Gregarious Sabella. This is composed
of a mass of fine sand, and particles of broken and finely comminuted
shells, aggregated by vermiform animals of the Nereis genus, each
lodged in its separate tube close to, but not interfering with each
other. All the tubes end in orifices on the upper or the same surface.
I but once saw a mass of this kind, about the size of a large apple, on
the beach, a mile east of Weymouth ; but I suspect it is not very un-
common, as fragments are very frequent."

TOL. iv. H

to

PLATE CXL.

MACTRA HIANS.

GAPING, OR OBLONG MACTRA,
GENERIC CHARACTER.

Animal a Tefhys. Shell bivalve: valves equal; sides unequal;
middle tooth of the hinge complicated, with a small hollow : lateral
teeth remote and inserted into each other.

SPECIFIC CHARACTER.

Shell oblong, rather arcuated, coarse, gaping anteriorly, and the

hinge placed very far back.

Mactra hians : testa oblonga sub-arcuata rudi anticc hiante, car-
dine subterminali.
Mactra hians. Soland. Mus. Port.

Da Costa and some other Conchologists have very erroneously
been led to conclude, that this, and ivlactra lurraria, are the same
species, although they differ in almost every particular. The pre-
sent shell is much wider in proportion to the length than M. lutraria. ;
and of a more incurvated shape : it is also a thicker and coarser
shell , and has the hinge placed much further back than in the other
species.' Dr. Solandcr, who described it in the catalogue of the
Portland Museum, gave i& the specific name of hians, from its re-

h 2

PLATE CXL.

markable gaping at the anterior end, and a name so applicable we
thought it best to retain.

The cicatrix of the animal, in this kind, is different from that of
M. lutraria, a circumstance that has not escaped the observation of
Dr.,Pultney. This author tells us, the Mactra hians is thrown up
in considerable quantities on all the smooth beaches he has seen on
the coast of Dorsetshire, particularly on the North shore at Poole,
opposite Branksea isle ; and that he has also seen it on the beaches at
Studland, Swanage, and Weymouth. We have observed it, but
not in abundance, on other sea-coasts.

!'}■:

PLATE CXLI.

MYTILUS RUGOSUS,

RUGGED MUSCLE,
GENERIC CHARACTER,

The hinge toothless, and consists of a longitudinal furrow.

SPECIFIC CHARACTER

AND

I

SYNONYMS.

Shell rhombic oval, rugged, obtuse at the ends and antiquated.

Mytilus rugosus : testa rhomboideo-ovali rugosa obmsa antiquata.

Linn. Si/st. Nat. p. 1156- No. 249.
Pholas noster, sive concha intra lapidem quendam cretaceum degens.

List. II. An.. Angl. p. 1T22. tit. 21. tab. 4.

Jig. 21.
Mytilus parvus rhomboidea-ovalis, subalbescens, rugosus. Rugosus,

Rugged, Da Costa Brit. Conch, p. 223. sp. 52.

The Mytilus rugosus is rather a rare species on our coasts. Lister
notes it from Hartlepool in Durham, and Da Costa says on the coast
of Yorkshire, about Scarborough, Whitby, &c. It is found in incre-
dible abundance, niched or burrowed, in the rocks of lime-stone, &c.

h 3

PLATE CXLI.

In habit and manners of life this species greatly resembles the Pho-
lades, each forming for itself a separate apartment within the hard
clay, or solid stone : this it pierces when young, and afterwards con-
tinues to enlarge the cell as it increases in bulk, without widening the
aperture ; so that when full grown, the shell cannot easily be taken
whole out of the cell, without breaking the stone in which it is
contained.

This shell may perhaps be arranged with equal propriety with the
My<e as the Mytili, notwithstanding that it is admitted among the
latter by most collectors.

7+2

PLATE CXLIL

MYA GLYCYMERIS.

LARGE MY A.

GENERIC CHARACTER.

Animal Ascidia. Shell bivalve, gaping in general at one extremity :
hinge with a thick patulous tooth ; seldom more than one, and that
not inserted into the opposite valve.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell gaping at both ends : very thick, lamellous oblong-oval, with
transverse rugose striae : first tooth of the hinge very thick.

My A Glycymeris : testa utrinque hiante crassissima lamellata ob-

longo ovata transverse striato rugosa, cardinis
dente primario crassissimo, Gmel. Sj/st. Nat.
p. 3222. sp. 17.

Mya Glycymeris : testa sub-ovata oblonga, ponderosa, ventricosa,

utrinque hians, antice et postice quasi oblique
truncata, dente cardinali crassissimo. Chtmn.
T. 6. p. 33.

Telline beante, Fa-cart D'Herbigny. Did. T. 3. p. 358.

List. n. Conch. 6. t. Z.f. 25. Bom. t. \.f. 8.
H 4

PLATE CXLII.

r

A species of Mya admitted with some doubt as a British shell : it
is a kind acknowledged however as such, by collectors of English
Natural History in general ; and is said to have been undoubtedly
fished up in the deep waters between the Dogger-Bank and the
eastern coast of England. '

The Mya Glycymeris is the largest of its genus, and is an inha-
bitant of most parts of the European sea. In the Mediterranean,
and on the northern coasts of Spain, it is not uncommon : on the
coast of France it is also found sometimes.

143

/

f

PLATE CXLIII.

BULLA PATULA.

PATULOUS BULLA.

GENERIC CHARACTER.

Animal Limax. Shell rather convoluted at one end, suboval : aper-
ture oblong.

SPECIFIC CHARACTER

AND

SYNONYMS.

Shell ovate, smooth, and somewhat beaked at both ends ; that at the
base produced and sub-umbilicated : lip entire.

Bulla patula : testa ovatalaevi sub-birostri : basi production sub-

umbilicata, labro integro.
Bulla patula. Open. B. with one one end much produced and

fuciform. The aperture very patulous. Penn.

Brit. Zool. V. 4. p. 111. sp. 85.

Pennant seems to be the only author who has noticed this species.
Da Costa imagined, from the description given by that author,
that it was of the same kind as that which he inserted in his British

PLATE CXLIIL

Conchology, under the name of Bulla, the Bubble (Aperta, Linn.)
and refers to the figure in the work of Pennant accordingly ; but
in this instance he was much mistaken, for the two shells are per-
fectly distinct ; and it appears certain, that the shell described by Da
Costa was as much unknown to Pennant, as that of Pennant was to
Da Costa. The shell of the latter is figured in Plate 120 of this
work, and the true Bulla patula of the other is figured in the Plate
annexed.

This we apprehend to be one of the rarest of the British shells
hitherto discovered ; Pennant notes it from Weymouth, and refers
for his specimen to the Portland Cabinet : our shell is from Wey-
mouth likewise.

IM

PLATE CXLIV.

NERITA NITIDA.

GLOSST NERIT.

GENERIC CHARACTER.

Animal Limax. Shell univalve, spiral, gibbous, and rather flat
beneath : aperture semi-orbicular, or semi-lunar : pillar lip transverse
truncated and flattish.

SPECIFIC CHARACTER.

Shell smooth, white, and glossy : spire rather pointed : umbilicus

half closed.

Nerita Nitida testa Isevi nivea nitida : spira sub-mucronata um-
bilico semi-clauso.

Among the reserved shells intended by Da Costa for a second edi-
tion of his Conchology, we find two specimens of this species of
Nerita, with a MS. memorandum, importing that he had received
one of them from Mr. Church, and that the other was in his posses-
sion before. On this vague authority, we did not think it incumbent
to insert the shell in the present Work, especially since its habitat was

PLATE CXLIV.

not mentioned ; but the same kind was discovered, in the course of
last summer, upon the coast of Scotland, near Caithness, by A.
Macleay, Esq. and we can no longer hesitate to insert it as an un-
doubted British species.

In the annexed plate it is represented of the natural size. It is a
remarkable little shell, and is not to the best of our knowledge, men-
tioned in the work of any author.

>

INDEX

VOL. IV.

LINNiEAN ARRANGEMENT.

* MULTIVALVIA;

Plate. Fig.

PhOLAS dactylus, (Da Costa) - - - 118

. Candida -

- 132

striata - - - 117

BIVALVIA. CONCH^E.

Mya ovata - 122

— — glycymeris - - - - 142

Solen marginatus - - - no

antiquatus - - - - - 114

Tellina inaequistriata - 123

Cardium edule - 124 1

rusticum ? - 124 z

Mactra glauca - - - - -125

— — — hians - - 140

subtruncata - I26

Venus cancellata

"5

— — undata - - 121

borealis

130

Chama cor - - - - 134

Area lactea - - - - . - 135

Ostrsa Jacobaea - ... j^j

• lineata - - - - - 116

INDEX.

Plate. Fig.
Mytilus edulis _____ 12g

ungulatus - - _ - 128 a

— — — anatinus - - - - - 113

■ ■■ rugosus - - - - 141

UNIVALVIA.

Bulla aperta - . - 120 r

— — cylindrica _____ 120 a

1 patula --__—. 143

Voluta triplicata - 138

Murex carinatus _____ 109
antiquus - - _ - -119

Trochus papillosus - - - - - 127
■- — terrestris - - _. _ -111

Turbo dupiicatus - _ - _ 112

Helix hortensis (Aspersa Gmcl?) - 131

— — arbustorum - - - _ - 136

Ncrita nitida _____ ,44,

Patella albida _ _2o

Sabella alveohta - 135

* ■ tubiformis _ - - _ - *33

INDEX TO VOL. IV.

ACCORDING TO

HISTORIA NATURALIS TESTACEORUM
BRITANNIA of DA COSTA.

PART I.

UNIVALVA NON TURBINATA.

GENUS 1. PATELLA. LIMPET, FL1THER, OR PAP SHELL,

Plate. Fig.

Patella aibida - «?

PART II.

UNIVALVIA INVOLUTA.
GENUS 5. BULLA. DIPPER.

Bulla aperta (Bulla Da Costa) - - - 120 i

— - cylindrica (Penn.) - - - - 120 a

"-— - patula (Penn:) - - - - 143

I N D E X.

PART III.

UNIVALVIA TURBINATA.

GENUS 7. TROCHUS. THE TOP.
TERRESTRES. LAND.

Trochus terrestrls

Plate.
in

Fig.

Trochus papillosas

* MARINE. SEA.

127

GENUS 10. COCHLEA SNAILS.

* TERRESTRES. LAND.

Cochlea vulgaris
— — — unfaciata

13!

136

GENUS 12. STROMBIFORMIS. NEEDLE SNAIL.

* MARINE. SEA.

Strombiformis bicarinatus

112

ORDER 2.

BIVALVES.

GENUS 1. PECTEN ESCALLOP.

Pecten Jacobaeus
» 1 lineatus

*37

INDEX.

GENUS 5. ARCA, ARKS, OR BOATS.

* MARINE. SEA.

Area lactea (Da Costa)

Plate. Fig.
135

GENUS 6. CARDIUM. HEART COCKLE.

* MARINE. SEA.

Cardium vulgarc
■'■■ ■ rusticum ?

124.
124.

1
3

GENUS 11. MYTILUS MUSCLE.

Mytilus Anatinus

* FLUyiATILES. RIVER.

113

* MARINE SEA.

Mytilus vulgaris

■ ungulatus
' rugosus -

123

128
141

i

PART III.

GENUS 13. CHAMA GAPERS.

* MARINE. SEA.

Chama magna (hians. Solander)
vol. IV.

140

INDEX.

GENUS 14-. SOLEN. SHEATH OR RAZOR SHELL.

Solen marginatus
■' Chama-Solen

Plate. Fig.
no
114

PART IV.

MULTI VALVES.

GENUS 16. PHOLAS PIDDOCKS.

Pholas dactylus
■ 11 Candida
■ 1 'I striata

11S

132
117

ALPHABETICAL INDEX TO VOL. IV.

Plate. Fig

AlBIDA Patella - - - -129

alveolata, Sabella - - - - - *39

anatinus, Mytilus - - - JI3

antiquatus, Solen - - - - 114

antiquus, Murex • 1*9

aperta, Bulla - - - - - izo »

arbustorum, Helix - - - -136

borealis, Venus . - - - 130

cancellata, Venus « - - - -115

Candida, Pholas - - - - - 132

carinatus, Murex - - 109

cor, Chama - - - - 134
cylindrica, Bulla - 120 a

dactylus, Pholas - - - - -118

duplicatus, Turbo - - - - -112

edule, Cardium - - 124 *

edulis, Mytilus - - 128 1

glauca, Mactra - - - - -125

glycymeris, Mya - - - - 142

hians, Mactra - 140

hortensis, Helix - - - - -131

inaequistriata, Tellina * 123

Jacobsea, Ostrea - - - - 137

lactea, Area - - - - -135

lineata, Ostrea - - - - -116

marginatus, Solen - - - - no

nitida, Nerita - - - - 144

ovata, Mya ----- 122

papillosus, Trochus - 127

patula, Bulla - - - - *43

INDEX.

Plate. Fig.

rugosus, Mytilui - - _ . . j,,

rustlcum, Cardium - - 1%/> %

striata, Pholas - - . . -117

subtruncata, Mactra - . . -126

terrestris, Trochus - . _ - 111

triplicata, Voluta - . _ - 138

tubiformis, Sabella . - • - J33

undata, Venus - - - - - 121

ungulatus, Mytilus - - - 12S t

END OF VOL. IV,

Printed by Bye and Law, St. John's Square, Clerlcenwell.

^ y

;