CONCHOLOGIA INDICA. 
51 
PLATE CXXY. 
PALUDOMUS. 
1, 4. P. funioulata, Reeve, Conch. Icon. Palud. f. 
13.—Tanalia, f. Layard, Proc. Zool. Soc. 1854, p. 
93 (amended description). 
In a mountain stream, not far from Ratna- 
poora, Ceylon. 
2, 3. P. pyriformis, Dohrn, Proc. Zool. Soc. 1858, 
p. 536. 
Ceylon. 
5, 6. P. dilatata, Reeve, Proc. Zool. Soc. 1852, p. 
128. 
Ceylon. 
7. P. abbreviata, Reeve, Proc. Zool. Soc. 1852, 
p. 127. 
Ceylon. 
Forms too near an approach to bicinctus. 
8, 9. P. Thwaitesii, Layard, Proc. Zool. Soc. 1854, 
p. 92 (as Philopotamis). 
Ceylon. 
10. P. Hanleyi, Dohrn, Proc. Zool. Soc. 1858, p. 535. 
Ceylon. 
The spiral lines are too minute to be adequately 
represented. All the Paludomi of this plate have been 
drawn from the specimens originally described from 
Cuming’s collection (now in the British Museum). 
PLATE CXXYI. 
PALUDOMUS. 
1, 4. P. constricta, Reeve, Proc. Zool. Soc. 1852, 
p. 129. 
Ceylon. 
A rather uncertain species, figured, as indeed are 
many (f. 5, 6, 8, 9,) in this plate, from the Cumingian 
types. 
2, 3. P. palustris, Layard, Proc. Zool. Soc. 1854, 
p. 89. 
Ceylon. 
Remarkable for its granulated surface. 
5, 6. P. Cumingiana, Dohrn, Proc. Zool. Soc. 1857, 
p. 124. 
Ceylon. 
Distinguishable from Gardneri, says the author, by its 
larger mouth, and the deep channel-like impression on 
the upper part of the whorl 
7, 10. P. obesa, Philippi, Abbild. Neue Conch, 
vol. 2, p. 170, Melania, pi. 4, f. 3 (as ?Melania). 
—P. maculatus, Lea, Proc. Nat. Philadel. vol. 8, 
p. 110.—Rivulina m. Lea, Journ. Acad. Philad. 
ser. 2, vol. 6, p. 118, pi. 22, f. 10. 
Bombay: Ahmednuggur. 
8, 9. P. nodulosa, Dohrn, Proc. Zool. Soc. 1857, 
p. 125. 
Ceylon. 
PLATE CXXVII. 
HELIX. 
See previous plates xiii to xvi, xxv to xxxii, 1 to Ixiv, 
Ixxxiii to xci, cxi, cxii. 
1. H. Waltoni, Reeve, Proc. Zool. Soc. 1842, p. 49 : 
Conch. Syst. vol. 2, pi. 166, f. 2, 3: Conch. Icon. 
Helix, f. 372.—Pfeif. Mon. Helic. vol. 1, p. 19. 
Ceylon. 
The ordinary form has a speckled epidermis. 
2. H. hasmastoma, Linnaeus, Syst. Nat. ed. 12, 
p. 1247.—Chemn. Conch. Cab. vol. 9, f. 1150,1.— 
Reeve, Conch. Icon. Helix, f. 366, b.—Pfeif. Mon. 
Helic. vol. 4, p. 195. 
Ceylon. 
There is a black-mouthed variety very different 
from the true melanotragus. 
3. H. melanotragus, Born (not Reeve), Test. Mus. 
Vind. p. 388.—H. hasmastoma, var., Chemn. Conch. 
Cab. vol. 9, f. 1052, 3, and Reeve, Conch. Ic. Helix, 
f. 366, c. 
Ceylon. 
Born referred solely to Geve (f. 329) for an illus¬ 
tration (and it is a characteristic one) of his species, 
which, whether really distinct, or merely a varietal 
form of the last, may usually be recognised by its 
broad white upper band, and the shape of its earlier 
volutions. 
4. H. superba, Pfeiffer, Zeits. Mai. 1850, p. 71 : 
Mon. Helic. vol. 3, p. 185: Kust. ed. Chemn. 
Helix, pi. 133, f. 1, 2 ,— Reeve, Conch. Icon. Helix, 
f. 368. 
Ceylon. 
5. H. fastosa, Albers, Mai. Blat. 1854 (vol. 1), 
p. 213.—Pfeif. Mon. Helic. vol. 4, p. 197. 
Ceylon. 
