252 
DEVONIAN FAUNA. 
Ml. retrorsus, F. A. Romer,^ seems only to differ in having fewer and more 
quickly increasing whorls. In a subsequent part of his work Romer^ figures a 
variety with fewer strise and more slowly increasing whorls. If these two are 
really only varieties of the same species, it is almost certain that that species must 
be the same as Phillips's, as the points of difference are not permanent in the two 
specimens. SandbergerMdentifies with Romer's shell a small cast which may very 
well belong to the present form. 
Ell. annulatus, Sandberger, seems to agree exactly with Phillips's type, but it 
has a bifurcation and diminution of the ridges on the back which are not discernible 
on Phillips's shell, though from its bad state of preservation it is quite possible 
that they originally existed. 
Affinities. — This species is distinguishable from Ph, serpens, sp., Phillips, by 
the larger number of its volutions, its narrower and more slowly increasing 
whorls, and by its more prominent and coarser markings. 
Eu. germanus, Phillips, sp., differs from E-tt. annulatus, Phillips, and all the 
other English species of these localities by having spiral threads which form 
reticulations with the longitudinal lines. 
6. EUGMPHALUS NEAPOLITANUS, n. sp. PI. XXIV, figs. 12, 12 a. 
Description. — Shell rather small, flat, discoid, obliquely coiled in about five 
slowly increasing volutions. Spire concave. Suture rather deep, facing upwards. 
Whorls nearly circular in section, slightly flattened on the back, and bearing on 
their highest point a flat sulcus bounded by indistinct ridges. Ornament (of the 
inner whorls) consisting of fine, close, rounded ribs or strige, tending slightly 
backwards, and not deflected on the sulcus. Shell-structure thick. 
Size. — Height about 6 mm., width 21 mm. 
Locality. — Wolborough. A single specimen is in Mr. Vicary's Collection. 
Remarks. — As the only specimen of this shell is almost entirely a cast, and the 
ornament is only preserved upon the inner whorls, its description must be regarded 
as somewhat uncertain, for it cannot be asserted that the character of the 
markings does not change upon the body- whorl. As far as can be judged, however, 
it clearly belongs to the genus EuompJialiis, as there are no signs whatever of any 
arching of the ornament that might indicate the existence of a sinus-band. 
Affinities. — This shell bears a very close resemblance to Pleurotomaria euoni- 
1 1850, P. A. Eomer, ' Beitr.,' pt. 1, p. 15, pi. iii, figs. 15 a, b. 
2 1866, ibid., pt. 5, p. 8, pi. xxxiv, fig. 3. 
3 1853, Sandberger, ' Verst. Ehein. Nassau,' p. 213, pi. xxv, figs. S, S a, 8 b. 
