23 
RADULA. Tellina Radula. Mont Test. Brit., vol. I, 
P- *58. p|. 2. fig 1 , 2. Lucina R. Flem. Brit. An., p. 441. 
Montagu found it in abundance at Falmouth; and I have 
j tained it on the east coast. 
PLEXUOSA. Tellina F. Mont. Test. Brit, vol. 1 , 
P- 27. Lueina F. Flem. Brit. An., p. 442. 
Montagu says “ It is abundant in the sand of Falmouth 
’ ai- bour; it is less common in other districts. 
PISIFORMIS. Cardium Discors, Mont Test. Brit., 
V °I. l,p. 84. L P. Flem. Brit. An., p. 442. 
t) Montagu says “ we hesitate to determine this shell to 
j le actually English, having only found one dead specimen 
j s atnl at Falmouth, taken from the harbour.” 
• ARCUATA. Cardium A. Mont. Test. Brit., vol. 1, 
P* 85, pi. 3 , fig. 2 . Lucina A. Flem. Brit. An., p. 442. 
<] ‘We found this elegant species in Falmouth harbour, 
nJ'oged, up with sand for manure; but not common.” 
M°ntagu. 
• LACTEA. Telina L. Lin. Mont. Test. Brit., vol, J, 
P- 10, pi. 2, fig. 4. Loripes Lacteus. Flem. Brit. An., 
P* 430. Scarcely uncommon. 
G DONAX. 
^ Eric CHARACTER: Shell transverse, equal valved, 
"Qequai sided ; anterior side very short and obtuse. Two 
( ' ar dinal teeth either in both vaives, or only in one; one 
° 1 ‘ Wo lateral teeth, more or less distant. Ligament short, 
® x, ernal, inserted in the place occupied by the lunula. 
1 “is genus is characterized by its rather flattened, and 
tile ' 081 triangular shell, and by having at the hinge, beside 
sen Carc *' na l teeth, one or two rather distant lateral teeth, 
laf ara ted from the cardinal teeth, and analogous to the 
i„ e ei 'M teeth of the Madras, Succine® and Tellin®. The liga- 
si(j nt of the Douaces and Tellium, is always on the shortest 
t| le e . of the shell, but in the Veneres and Cythere®, it is on 
^ |.!°ngest. The Donas has not the flexuous fold of the 
* n laa - Journal of Science, vol. 14, p. 307. 
*RUNCULUS. Turt. Lin. Pen. Br. Zo., vol. 4, pi. 
jj fig- 45. Mont. Test. Brit., vol. 1, p. 103. Flem.. 
r r,t ; An., p. 433. On some part of the coast this is rare ; 
B t, *t is found at Par in abundance. 
'til t 1®^ LATA. Turt. Lin. Pen. Brit. Zo., vol. 4, 
r ( ,.' M>, fig_ 4 g_ ftlont. Test. Brit., vol. 1 , p. 104. Stew. 
i n , e,n *» vol. 2, p. 378. Flem. Br.- An., p. 433. This is 
r,o >ert «M on the authority of Da Costa ; neither Montagu 
* j) r myself having ever found a specimen. 
• COMPLANATA. Mont. Test. Brit., vol. 1 , p. 106. 
Ra^ m ' Kri1, An -> P- 434. Ilare - Montagu found it at 
mo ulh and Looc ; and among a collection of small shells 
