41 
the edges and forming a dorsal covering; the mantle 
“y which they are kept together, allowing of motion, and 
, tocming a border round the whole. 
C - FASCICULARIS. Turt. Lin. Mont. Test. Brit., vol. 
L p. 5. Flem. Brit. An., p. 281$. Not uncommon, 
sheltered under stones, or at the roots of the smaller 
sea-weeds and Corallines. When separate from its resting 
('lace, in rolls itself np into a ball; as is the habit also of 
p the other Chitons. 
„ CRINITUS. Tart. Lin. Pen. Brit Zo., vol. 4, pi. 36, 
"o- 1. Mont. Test. Brit., vol. 1, p. 4. Scarce; but I 
lla ' - e found it at Coomb in Lantivet bay, among the roots 
* s ea-weeds. 
MARGINATUS. Turt. Lin. Pen. Brit. Zo., vol. 4, 
36, fig. 2, Mont. Test. Brit., vol. 1, p. 1. Flem. 
t Brit. An., p. 289. Not uncommon. 
RUBER. C. Levis. Turt. Lin. Pen. Brit. Zo., vol. 4. 
Pi. 36, fig. 3. Mont. Test. Brit., vol. 1, p. 2. C. R. 
Flem. Brit. An., p. 289. It is to be observed, that these 
an imals are subject to variation of colour; so that scarcely 
specimens of any of the species will be found exactly 
t p'milar in this respect. 
CINEREUS. Turt. Lin. Mont. Test. Brit., vol. 1, 
» E 3. Flem. Brit. An., p. 289. Not uncommon, 
p -ALBUS. Turt. Lin. Mont. Test. Brit., vol. 1, p. 4. 
jfletn. Brit. An., p. 290. Common, on shells or stones 
r °m deep water. 
G PATELLA. 
^/V-EEJC CHARACTER .- Shell univalve, flattened co- 
a 'cal or like a shield, concave and simple below, without 
s sure on the margin; the summit entire, inclining 
* p r Ward. 
V FULGATA. Turt. Lin. Pen. Brit. Zo., vol. 4, pi. 89, 
‘I?- 145. Mont. Test. Brit., vol. 2, p. 475. Flem. Brit. 
y 1, p. 286. Limpet. Abundant, most so on the east side 
* p the county. They are employed to feed Ducks. 
V D EPRESSA. Turt. Lin. Pen. Brit. Zo., vol. 4, pi. 89, 
j5; 146. Mont. Test. Brit., vol. 2, p. 475. Borlase’s Nat. 
!*!• of Corn., pi. 28, fig. 3. It remains uncertain whether 
be a variety of P. Vulgata, or a separate species: 
this 
Mo 
.j, °ntagu and Fleming inclining to the former. Pennant and 
* p U jt°n to the latter opinion. 
• 1NTORTA. Flem. Brit. Ad., p. 287. A specimen 
f hlc h with doubt, I have assigned to this species, was 
j^'^l near Seaton, east of Looe. It is seven-tenths of an 
® “ ' n its longest diameter and about six-tenths in height, 
[j| °°th, conical, the summit not inclined, bearing resem- 
ance to Pennant’s figure of P. (Emarginula) Fissura, but 
