3G6 
Contributions to Indian Malacology. 
[No. 4, 
migrated species being subsequently driven to their actual isolated 
stations by the progress of upheaval. 
It would appeal- furthermore that a certain interchange of species 
must have taken place, either immediately by transport across the 
sea area, or slowly and mediately across the plains, with areas far 
more distant than the Nilgiris. We have given 4 examples of 
hill shells known to be common to Ceylon or S. India and the 
Himalaya, the Kliasia Hills, and even the Tenasserim Provinces and 
Singapoie, ranges the more striking when we consider how few 
species are common to the Nilgiri Hills and those of Ceylon. 
Plate I. 
Dipplommatina Nilgirica, enlarged. 
j, Kingiana „ 
Alycseus Pootei, 
Jerdonia Kolamulliensis, 
Operculum of Jerdonia trochleea, „ 
Cyclophorus malleatus, 
Helix bilirata, 
Helix Todarum, Nat. size. 
Helix mucosa, „ 
Helix tricainata, enlarged. 
Helix tertiana, „ 
Helix aspirans, „ 
Helix injussa, „ 
Bulimus orbus, Nat. size. 
Spiraxis hebes, „ „ 
Aehatina paupercula, enlarged. 
„ Mullorum, Nat. Size. 
Plate II. 
Cyclotus Kalryenensis, enlarged. 
Helix daghoba, enlarged. 
„ mucosa. Nat. size. 
„ febrilis, enlarged. 
„ Barrakporensis, enlarged. 
Streptaxis Perotteti, var Pootei, enlarged 2 diam. 
” » » » mouth enlarged. 
” Watsoni, mouth proportionately enlarged. 
Eunea Salemensis, enlarged. 
Aehatina from the Kalryenmullies, enlarged 2 diam. 
Pig. 1. 
» 2. 
„ 3 . 
„ 4. 
» 5 . 
„ G. 
„ 7. 
» 8 . 
„ 9 . 
» io. 
„ 11 . 
„ 12 . 
„ 13 . 
„ 14. 
» 15. 
» 16 - 
» 17- 
Pig. 1. 
» 2 . 
„ 3 . 
„ 4. 
„ 5. 
„ G. 
„ G a. 
„ 7. 
» 8 . 
» 9 . 
