CONCHOLOGIA INDICA. 



51 



PLATE CXXV. 

 PALTJDOMUS. 



1, 4. P. funiculata, Eeeve, 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. 1'27. 



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 CXXVI. 

 PALUDOMUS. 



1, 4. P. constrieta, 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 CXXVIL 

 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, £ 2, 3 : Conch. Icon. 

 Helix, f. 372.— Pfeif. Mon. Helic. vol. 1, p. 19. 



Ceylon. 



The ordinary form has a speckled epidermis. 



2. H. lisemastoma, 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. 



There is a black-mouthed variety very different 

 from the true melanotragus. 



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

 Vind. p. 388. — H. hjemastoma, var., Chemn. Couch. 

 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. 



