MANUAL OP THE NiLAQIRI DISTRICT. 179 



Jerdonia, Craspidotrojns, Opisthostoma, Cydo2ohorus, Shlplayi, CHAP. VIII, 

 and some of the GyatJiopomas, Streptax'is, many small Helices PART III. 

 and some of the Achatinas abound in the sholas or woods of zoology. 



the plateau. Helix Madraspatana abounds on the grass land of 



the plateau, sometimes in association with Helix Nilagirica and 

 Bidimus Nilagiricus. The two species of Pteroajclos are found at 

 or near the foot of the hills, and most of the Cydophori in the 

 woods on the slopes (Sisapdra, Coonoor, and Kalliatti ghdts). 



Fresh-water Shells. 



There are very few fresh-water shells. Nerltina PerroUetii i^'rcsh-water 

 occurs in some rivers on the plateau, and Paludina Bei}galensis, ^ ^ ^' 

 Planorhis exustus, and AmpuUaria glohosa occur in tanks. 



