PALUDOMUS.—Ptatz TI. 
Species 2. (Fig. a, 6. Mus. Cuming.) 
PaLuDomus unpatus. Pal. testé obovaté, spird via ex- 
sertd, anfractibus superné plano-depressis liris tenuibus 
creberrimé spiraliter cingulatis, quarum postremis sub- 
tiliter nodulosis, ceteris levibus interstitiis omnium 
longitudinaliter conspicué elevato-striatis ; aperturd 
ampla ; nigricante-fuscd, fasciis nigricantibus oblique 
undatis obscuré picté, intus cerulescente-albd, fasciis 
undatis conspicuis, columellé albé, purpureo-nigro 
tincta. 
THE WAVED Patupomus. Shell obovate, spire scarcely 
exserted, whorls flatly depressed round the upper 
part, very closely spirally encircled with fine ridges, 
of which the most posterior are finely noduled, the 
rest smooth, interstices of the whole conspicuously 
longitudinally elevately striated ; aperture large ; 
blackish brown, obscurely painted with obliquely 
waved blackish bands, interior blueish white, the 
waved bands conspicuous, columella white, stained 
with purple-black. 
Hab. In vapids flowing from Adam’s Peak, Ceylon ; 
Gardner. 
This species differs little in its general aspect from the 
P. loricatus, the ridges are nevertheless finer and only two 
or three of the upper ones exhibit any indication of no- 
dules; the interstices between the ridges in this species 
are moreover distinguished by being conspicuously longi- 
tudinally striated. I have examined between fifty and 
sixty specimens of P. Joricatus in different stages of growth, 
but find no state of it with any approximation in these 
respects. 
Species 3. (Fig. a, 6. Mus. Cuming.) 
Patupomus Nerirorpzs. Pal. testé oblongo-ovatd, spird 
subeaserta, anfractibus rotundatis, obscuré obtuso- 
liratis ; aperturd subampld ; olivaced, fuscd, in testé 
juniore acute undatd, intus albidd, columellé et aper- 
ture limbo nigricante-fuscis interdum hic illic macu- 
latis. 
THe Nerive-LikE Patupomus. Shell oblong-ovate, 
spire a little exserted, whorls rounded, obscurely 
obtusely ridged ; aperture rather large ; olive, sharply 
waved in the young shell with brown, interior white, 
columella and edge of the lip sometimes blotched 
here and there with blackish brown. 
Hab. In the bed of a river at Ambegamoa, Ceylon ; 
Gardner. 
This species has more the form of a Nerite than any 
other, and is distinguished in an early stage of growth by 
a brilliant pattern of zigzig painting in the interior. The 
lip and columella are sometimes white, sometimes blotched 
with blackish brown. 
Species 4. (Fig. a, 6. Mus. Cuming.) 
PaLupomMus GLoBuLosus. Pal. testé globulosé, solidé, 
spird plano-depressi, anfractibus superné tumidis, un- 
dique levigatis ; olivaced, aperturé albidi, nigro con- 
spicue trifasciata. 
THE GLOBULAR Patupomus. Shell globular, solid, spire 
flatly depressed, whorls swollen round the upper 
part, smooth throughout; olive, aperture whitish, 
conspicuously marked with three black bands. 
Melania globulosa. Gray in Griff. Cuvier, pl. 14. f. 6. 
Hab. In the bed of a river at Ambegamoa, Ceylon ; 
Gardner. 
Distinguished from all others at present known by its 
solid globular form ; it is figured and named in Griffith’s 
Cuvier, as above referred to, but not described. 
Species 5. (Mus. Cuming.) 
Patupomus oLIvaceus. Pal. testd ovatd, apicem versus 
attenuata, spird exsertd, anfractibus undique levigatis, 
apertura mediocri, labro subeffuso ; olivaced, nigro hic 
illic maculatd, aperturd nigerrimo-fusca, limbo albido, 
nigro tessellato. 
TuE OLIVE PaLtupomus. Shell ovate, attenuated towards 
the apex, spire exserted, whorls smooth throughout, 
aperture middling, lip somewhat effused; olive, 
spotted here and there with black, aperture very 
dark brown, lip whitish, tessellated with black. 
Hab. Point Palmas, Island of Sumatra (in a muddy 
stream). 
Distinguished by its rounded form, spirally banded 
painting and dark interior articulated at the lip. 
