1840.] Asiatic Society » 729 



5. — Cyclostoma involvalus. — Soverly. — Found at Cherra Poonjee, and in the Dar- 

 jeeling district of the Himalya mountains. At Darjeeling it is of the smaller size, 

 but lower down, at an elevation of not more than 2,500 to 4,000 feet, they are much 

 larger — as large again as those sent; but I have not a good specimen of this large 

 variety. Mr. Benson is of opinion this species is the same as No. 4. 



6. — Cyclostoma Found also at Darjeeling, but not very common. 



7. — Pterocyclos hispidum peaugo. — From the Garrow Hills. I described this and 

 the following shell in the Journal of the Asiatic Society for November 1833, under the 

 name of Spiraculum hispidum ; a generic name, which out of deference to Mr. 

 Benson's authority as a conchologist (independent of his prior claim) I think it 

 right to withdraw. 



8. — Pterocyclos parvus, — Pearson. — Locality as the last species. 



9.— Pterocyclos rupestris.— Benson. — Found in the Rajhmahl hills. The first spe- 

 cies of the genus discovered by Mr. Benson. 



10. — Helix • Found at Darjeeling. The only live specimen I have yet met 



with. 



11. — Melania varialilis. — Benson. — Found in Tolly's Nullah, near Calcutta. It 

 was also in the Sylhet and Cherra Poonjee collection, which I purchased jointly with 

 the Asiatic Society. 



12. — Melania stephanus. — Benson. — In the above mentioned collection. 



13. — Melania zonata. — Benson. — In the above collection. 



14.— Melania coricca?— Gray. — ditto, ditto. 



15. — Melania Found in tanks and rivulets of Bengal. 



16. — Melania ditto, ditto, ditto. 



17. — Melania ditto, ditto, ditto. 



18. — Melania ditto, ditto, ditto. 



19. — Paludina bengalensis. ditto, ditto. 



20. — Paludina crassa. — Inhabits the rivers &c. of India. 



21.— Paludina pulchella. — From the Sylhet collection. 



22.— Paludina ditto, ditto, ditto. 



23.— Lymncea I discovered this species in a tank on the road from Howrah io 



Bishop's College, near Calcutta. 



24 — Lymncea Common in stagnant waters all over India. 



25. — Planosbis indicus. — ditto, ditto, ditto. 



26.— Vitrina gigus. From the Sylhet collection. 



27.— Helix Bengal. 



28.— Helix From the Sylhet collection. 



29.— Helix 



30.— Helix 



31.— Helix 



32.— Helix 



33.— Neritina depressa.— Benson.— Found on the piles on the banks of the river 

 Hoogly at Calcutta. 



34.— Neritina tigrina.— Benson.— Locality as the last species. 



35.— Neritina I am not sure that this species is described. I found it adhering 



to stones, at low water, in Tolly's Nullah. 



36.— Assaminia fusicata ?— Common on the banks of the Hoogly. 



• ditto, 



ditto, 



ditto. 



ditto, 



ditto. 



ditto. 



ditto, 



ditto. 



ditto. 



ditto, 



ditto. 



ditto. 



