CONCHOLOGIA INDICA. 



51 



PLATE CXXV. 

 PALUDOMUS. 



1, 4. P. faniculata, 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, Dolirn, Proc. Zool. Soc. 1858, 

 p. 536. 



Ceylon. 

 5, 6. P. dilatatS, 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 blcinctus. 



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 miniite 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 CXXVI. 

 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. Cmningiana, 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. 



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PLATE CXXVn. 

 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. 

 Tha ordinary form has a speckled epidermis. 



■^2. H. hsemastoma, Linnseus, 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. 

 TLsre is a black-mouthed variety very different 

 from the true melanotragus. 



3. H. melanotragus, Born (not Reeve), Test. Mus. 

 Vind. p. 388. — H. hsemastoma, var., Chemn. Conch. 

 Cab. vol. 9, f. 1052, 3, and Reeve, Conch. Ic. HeUx, 

 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 reaUy 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. 



