87 
ACTJEON crenatus. 
TAB. CCCCLX.— Jig. 1, 
Spec, Char. Ovate, elongated, transversely 
striated, columella minutely crenated. 
A slightly Yentricose, rather pointed, and elongated 
shell ; the aperture is very narrow above, the outer lip 
sharp, the columella without a plait but neatly crenated, 
which is a very remarkable circumstance. 
Found in the London Clay of Barton Cliff. 
ACTEON striatus. 
TAB. CCCCLX.— 2. 
Spec. Char. Ovate, acute, transversely striated, 
columella without a plait ; striae not punc- 
tated. 
Very regularly ovate with a pointed spire; the striae 
are most conspicuous about the base, upon the middle 
they are nearly lost ; they are in no part divided into 
punctums ; the columella is strong, but does not appear 
to have any real plait upon it, nor has it a sulcus, but is 
simply spiral • the aperture is ovate, pointed above, and 
occupies more than half the length of the shell. 
Strongly resembling Auricula sulcata of Lamarck, 
(which according to his own principles, he ought to have 
removed to his genus Tornatella, Acteon of Montfort) 
but smoother and more ventricose ; its columella also 
differs : Tornatella ventricosa of De France’s MSS. is, 
I believe, also different, although nearly akin to it. 
A Crag fossil, in the Cabinet of Mrs. Cobbold. 
