45 
BULL.EA. 
°ENERIC CHA RACTER: The shell thin, partially rolled 
atl d spiral on one side; without columella or spire; aper- 
ture large, dilated at the upper part. 
«• APERTA. Bulla A. Turt. Lin. Mont. Test. Brit., 
', 0 '* P' ^ 08; P^* vignette, 2 part, fig. 1. Flem. Brit. 
p. 294. Rare. I have met with a specimen much 
•esembling Montagu’s account of this shell, but differing 
efficiently to require mention; chiefly at the junction of 
** le pillar with the expansion, where the whorl is twisted, 
a °d tapers up to join the wing. Length six twentieths of 
ar ? inch, a little more than four twentieths of an inch 
"tde; white, and slightly transparent. 
BULLA. 
Q RNeriC CHARACTER: The shell oval, globular, 
Convolute; no columella, or projecting spire, or only 
8 *ightly elevated; aperture the length of the shell, outer 
margin sharp. 
c ^°Ha differs from Bullaea, by the shell being completely 
llv oIute, always visible externally, which the latter is not; 
„ °nly partially covered by the hinder part of the animal. 
LIGNARIA. Turt. Lin. Pen. Brit. Zo., vol. 4, 
Pi* 7 0, fig. 83. Borlase’s Nat. Hist. Corn., pi. 23, fig. 14. 
J°nt. Test. Brit., vol. 1, p. 235. Flem. Brit. An., 
g P* 292. Not uncommon, chiefly in trawls. 
•{AMPULLA. Mont. Test. Brit., vol. 1, p. 206, pi. 7, 
8* 1. Flem. Brit. An., p. 292. Montagu found two 
? r three of what he believed to be this species, in sand 
g r orn Falmouth harbour. 
UMBILICATA. Mont. Test. Brit., vol. 1, p. 222, 
^ * 7 > fig. 4. Flem. Brit. An., p. 293. Found by Montagu 
♦ y,P ar iogly, amongst sand from Falmouth harbour. 
T; CVLINDRACBA. Pen. Brit. Zo., vol. 4, pi. 70, fig. 85. 
Abt Test. Brit., vol. J, p. 221, pi. 7, fig, 2. Flem. Brit., 
7\p. 293. Found by Montagu at Falmouth, and I have 
B it from the byssus of a Pinna. 
uUNCATA, Turt. Lin. Mont. Test. Brit., vol. 1, 
^ 223, pi. 7 ( (jg ) 5. Flem. Brit. An., p. 293. Found by 
°ntagu, U ot uncommon in sand at Falmouth. 
A. Mont. 
B p°. nla !tu, not uncommon in sand at Falmouth. 
Y^TULA, Pen. Brit. Zo., vol. 4, pi. 70, fig. 85. 
j 681 - Brit., vol. 1, p. 207. I have obtained it from the 
e pth of 40 fathoms, on a branch of Gorgonia Verrucosa. 
Ti 
s Urla e s, tell spiral, with no other projecting part on the outer 
ap erl ^ e ’ l han the lines of growth; the right margin of the 
le oiten recurved, or reflected outwards. 
COL1M ACE A 
