1.6-6 The Hiftofy of A N I M A L S* 
fpinofe Cafdia. p The fnow-white, deeply-furrowed Cardia. 4. The large, fquam* 
mated, globofe, white Cardia. 5. The thick, white Cardia. 6. The elongated, ir¬ 
regularly deprefied Cardia. 7. The great, white^ eehinated Cardia, with fhort 
fpines. 
2. Of thofe which approach near to a triangular form, there are, 1. The elegantly 
reticulated and fpotted Cardia. 2. The ftrawberry Cardia* or tuberculofe, reddifh 
cockle. 3. The white, elegantly flriated Cardia, with a finely denticulated edge. 4. 
The deeply furrowed, and elegantly variegated Cardia. 5. The more obfcurely varie¬ 
gated, flriated Cardia. 6. The flriated and bullated Cardia. 
3. Of thofe which are compreffed and pointed at the bafe, and more regularly than 
any of the,others refemble a heart at cards, there are, 1. The fnow-white Cardia 
furrowed deeply within. 2. The little, purple Cardia. 3. The little, white, and 
protuberant Cardia. 4. The tall and very compreffed Cardia. 
4. Of thofe which have the furface fquammofe or tabulated, and imbricated, there 
are, 1. The great, protuberant Cardia, with eredt, broad, and rofe-coloured laminre. 
2. The compreffed and deeply imbricated, brown Cardia. 3. The bright, red Car¬ 
dia, with diftinft and elegant white imbrications. 4. The white, large, imbricated 
Cardia, variegated with red. 
5. Of the irregularly oblong Cardias, there are, 1. The furrowed, reddifh Car¬ 
dia, called the Noah’s Ark-fhell. 2. The yellow and white, flightly collated Ark- 
fhell. 3. The elegantly variegated, more lightly flriated Ark-fhell. 4. The thin, 
white, canaliculated Ark-fhell. 
6. Of the more regularly figured and lefs cordated fubglobofe kinds, there are, 1. The 
common brownifh, white, furrowed, and denticulated edged Cardia. 2. The larger 
and lefs denticulated-edged Cardia. 3. The little, red, deeply flriated Cardia. 4. The 
little, variegated, furrowed Cardia. 5. The large, fomewhat oblong, deeply furrow¬ 
ed Cardia. 6. The larger variegated, deeply furrowed Cardia. 7. The flatter, oval, 
variegated Cardia. 8. The deeply furrowed, umbonated, flatter Cardia. 9. The 
roundifh, finuated-edged, red and white Cardia. 10. The long and narrow, deep, 
collated Cardia. 11. The yellow and brown, collated and flriated Cardia. 12. The 
Amply, flriated, elegantly variegated Cardia. The fix former of this lafl divifion are 
commonly called by authors Cockles or Peduncles 5 and the reft are called Pedines in- 
auriti or fcallops, without ears to the fhell. 
P E C T E N. 
T H E Peden is a bivalve fhell, fhutting clofe all round, ufually of a depreffed or flat¬ 
ted form, and always aurited, or having one or two proceffes, called ears, iffuing 
from the head of the fhell near the hinge : thefe ears are in fome large, in others fmaller, 
and in fome fo minute, that it requires a nice examination to difcover them ; they are, 
however, a part of the generical charader of the fhell, and nothing, that is abfolutely 
without them, is to be received as a genuine fpecies. 
The greater part of the Pedens are flriated or collated 5 the ribs or ridges, running 
in ftraight and even lines like the teeth of a comb, whence the genus has been named, 
but fome of the genuine fpecies depart from this charader. 
PeElen coftatus , variegatus , auriculis magnis ezqualibus. 
The coftated and variegated PeElen , with large and equal ears . 
This is an elegant fpecies ; it’s length is about two inches and a half, it’s breadth two 
inches and a quarter, and the valves are very flat, or but little hollowed ; it is round¬ 
ed and finuated at the verge, and thence becomes fmaller to the head, where it ter¬ 
minates in an oblong point; but from each fide in this part there is propagated an au¬ 
ricle, which is continuous to the edge of the head, and runs down a third of an inch 
farther on the fhell; thefe are what are called the ears of the fhell 3 they unite at the 
top, and in that part rife a little about the level of the head : the whole furface of the 
valves is ornamented with ribs ; there are about twelve on each, and they are broad 
and rounded at the top, and have fpaces equal only to about half their own diameter 
between them ; the ears alfo are flriated and coftated : the ground colour of the fhell is 
white, but it is elegantly variegated with brown, in beautiful large fpots. 
We have it in great abundance on fome of our own fhores. 
Peden 
