transverse sculpture, by the peculiar green of the epidermis, which has less of a
yellow tinge, and by the umbilicus being more open than in any other specimens
I have seen of this protean shell; this form is near P. oxytropis, Bens.,1 from Manipur,
though the latter I consider a good and distinct species. M. Morelet2 has recently
suggested that probably both P. poly gramma and P . lineolata are merely
varieties of P. bengalensis ; he states that both forms are found in Cochin China,
and he identifies the two former for certain as merely varieties of P. sumatrensis.3
Genus P a l u d o m u s , Swainson.
PADUDOMUS ANDERSONIANA, Nevill.
Large and globose; spire produced and pointed; of a very striking greenish-
yellow colour, with four intense black bands on the last whorl, the one at the suture
fl.nrj the two near the base about the width of the broadest band on P. ornata ;
the second band from the suture twice this width; this latter, in all but very old
specimens, is very distinctly visible within the aperture; whorls seven, the first
two or three generally decollated, transversely superficially ridged, ridges more or
less obsolete towards the centre of the upper whorls, one of .them below the suture
more prominent than the rest; columella pure white; the operculum constantly
differs on its inner side from those of the other Burmese species by the remarkably
raised and very rugose nucleolar portion and by the distinct, though .minute,
granular margin. Dr. Anderson obtained several hundred specimens in all stages
of growth at Mandalay, Ava, Bham6, Kabyuet, and Myadoung. One of the best
distinguishing marks from its var. peguensis is the great width within the aperture
of the second brown band; the band nearest the base, on the other hand, is comparatively
smaller; in P . peguensis (even in young specimens) the two upper
bands are altogether wanting, th e , third very narrow, the last broad and diffused
over the basal portion of the columella. This is probably the Paludomus, sp., of
Theobald4 from the Shan States.
Long, max. 29, diam. max. 22 mm.
var. pegtjensis (sp. n. ?)
Palndomus regulata, Bens., var., Con. Indica, pi. 108, fig. 6.
Paludomus andersonicma, vox.peguensis, Nevill, I. c., p. 35.
Differs from the preceding by the slightly more rugose sculpture, by its more
decollated apex, by the less cylindrical whorls and less produced and pointed spire
(more apparent in young specimens), by the columella being apparently invariably
1 Con. Indica, pi. lxxvi, fig. 5.
* Ser. Conch, vi, p. 306.
3 Dkr., Mai. BL, 1852.
* Journ. As. Soc., Bengal, 1865, p. 264.
faintly stained with brown, by the almost entire apparent absence of coloration
on the last whorl, especially in the absence of the second broad band within the
aperture. Unfortunately, all the specimens have lost their opercula. The specimen
figured in the ‘ Con. Indica * is a very old decollated one.
Type of variety from Pegu ; long. 21, diam. 16 mm.
P a u u d o m u s o r n a t a , Bens.
Paludomus ornata, Bens., Ann. and Mag. Nat. Hist., ser. 2, vol. xvii, 1856, p. 498 ; Con. Indica,
pi. 108, fig. 8 ; Nevill, I. o., p. 35.
Specimens of this very handsome species from Ava, Pegu, and Mandalay are
in the Indian Museum ; it is well characterised by its seven produced and solid
whorls, acute and prominent spire; the' Ava specimens are not decollated, though
quite adult ; those from the other two localities have, however, all lost their first
three or four whorls ; both young and old shells are perfectly smooth, with the
exception of a deeply incised spiral groove below the suture ; the figure in the
‘ Con. Indica, ’ pi. 1 0 8 , fig. 8 , is excellent ; perhaps it scarcely shows sufficiently
clearly the three broad spiral brown bands; from the peculiar thickness, even
of young shells, these bands are, however, often scarcely visible. The operculum
resembles that of P . regulata, Bens., only it is little flatter ; both differ
considerably from that of P . andersoniana, being much smoother on their inner
side.
Long. 24, diam. 16 mm.
P a l u d o m u s b u r m a n ic a , Nevill. Plate "LXTCX, fig. 2.
Paludomus burmanica, Nevill, J o u rn . As. Soc., Bengal, vol. xlvi, 1877, p . 86.
Shell small, very thick, spire depressed, in shape closely resembling the European
Litorina obtusata ; only two whorls, the others decollated in both young and
old specimens ; smooth, with a few irregular striae at the suture ; columella very thick,
pure white ; aperture somewhat compressed, as in typical P. labiosa, not globosely
expanded as in P. blanfordiana ; in all the ten specimens found, pnly three instead
of four bands, the upper one exceedingly broad, covering nearly half the last
whorl, the middle one narrow, the basal one broad, but not diffused over any part
of the columella ; these bands are of the most intense black within the aperture,
even in very old, thick specimens; epidermis unusually thick, dark olive-green,
closely covered with regular raised pustules of a lighter colour.
Yaylaymaw and also Mandalay.
Long. 14^, diam. 12 mm.
The operculum is like that of P. regulata, a shade darker in colour, nucleolar
portion on the inner side a little more distinctly spirally rugose. The broad and
richly coloured bands (only three in number), pure white columella, and peculiar