ACTASONINA. 469 
(Tornatellxa), but with no proved columellar plication. This group includes such 
forms as Auricula Sedgvici and Tornatella pulla, which I have hitherto classed with 
the Acteons, as indeed have most authors, though Tate referred Tornatella pulla, 
K. and D., to Actxonina. 
2. Actxonine with fine spiral lines (Striacteonina in part) such as Acteonina 
Sarthacensis, d’Orbigny. Possibly also Acteonina humeralis, Phillips, which has a 
strongly impressed line on the shoulder, might come in here.’ 
3. Acteonine which are perfectly glabrous, or only exhibit striation, more or 
less faint, towards the anterior extremity. This division would include, amongst 
others, Actxonina as limited, and the sections Ovacteonina, Cylindrobullina, and 
Trochacteonina. 
414, Aormon vel Actmonina Sepevicr, Phillips, 1829. Plate XLII, fig. 15. 
1829-35. AvuricuLa Sepevict, Phillips. Geol. Yorks, part 1, pl. xi, fig. 33. 
1850. Acrmon Srepevict, d’Orbigny. Prod., 1, p. 263. 
1851. — — Phillips. Morris and Lycett, Grt. Ool. Moll., part i, 
p. 118, pl. xv, fig. 9. 
1885. — os — Hudleston, Geol. Mag., 1885, p. 252, pl. v, 
fig. 4. 
Bibliography, §c.—Owing to imperfect preservation it is still doubtful whether 
Phillips’ species is an Acteon or a striated Actwonina. ‘In the few cases where 
the aperture has been visible it is invariably without plication” (Hudleston, 
loc. cit.). Brauns (‘ Mittlere Jura,’ p. 194) considered Tornatella pulla, K. and D., 
the same as Actxon pullus, Morris and Lycett, but different to Auricula Sedgvici, 
Phillips. 
Description.—From 5 to 10 mm. in height and considerably more than half as 
wide as high. Ovate, with a stumpy spire composed of about three whorls. The 
whorls are strongly tabulate. The body-whorl and penult are ornamented by 
deeply-cut spiral striz, which are but slightly punctate; the surface of the 
body-whorl is thus divided into a number of strap-like belts, of which two, 
situated slightly below the middle, are wider than the rest. Other indications 
wanting. 
Relations and Distribution.—A stumpy form almost peculiar to the Dogger, 
! Stoliezka remarked that the “surface of many Actzeoninw appears to be perfectly smooth, but 
it is more likely this is only in consequence of the uppermost punctated layer of the shell having 
been removed ” (‘ Cretaceous Gastropoda of Southern India,’ p. 399). 
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