1870.] Proceedings of the Asiatic Society. 87 



1859 and 1864, it seems almost incredible to an Indian naturalist 

 to believe! The words, " as I cannot discover any species* 

 attributed to these islands in the various monographs" appear the 

 more remarkable, as Mr. Tryon is believed to have for years paid 

 special attention to the reviews of Conchological literature, and as 

 Editor and Recorder of the American Journal at one time, when 

 speaking with apparent very weighty authority on the Indian Wnios, 

 evinced a great interest in the general welfare of Indian Conchology ! 

 (vide Am. Journ. Conch. 1867, vol. iii, p. 201). 



There are about 20 species of landshells enumerated by Mr. 

 Benson and Theobald in their publications, and my late 

 investigations will probably increase the number to 30. Some 

 species are identical with those of the Nicobars. 



In order to prevent any misinterpretations of Mr. Tryon's 

 well executed (and very welcome) figures, I give now a list of the 

 identifications ; but I will not further refer to the subgeneric dis- 

 tinctions of the species, as I hope shortly to be able to publish 

 some notes regarding the anatomy of the animals, and other pecu- 

 liarities of the shells of the various species. 



1. Rhysota (Helix) Chambertinii, Tryon, 1. cit. p. 109, pi. 10, 

 fig. 2, is Helix Haughloni, Benson, Ann. Mag. Nat. Hist., 1863, 

 3 ser., vol. ix, p. 87. 



2. Ampelita (Helix) Bigsbyi, Tryon, 1. cit. p. 110, pi. 10, fig. 

 3, is Helix trochalia, Benson, A. M. N. H. 1861, 3 ser., vol. vii, 

 p. 82. 



3. Orobia (Helix) Andamanensis, Tryon, 1. cit. p. 110, pi. 10, 

 fig. 4, is Helix exul, Theobald, Jour. As. Soc. Bengal, 1864, 

 xxxiii, p. 245, which is possibly the same as Hel. stephus, Ben- 

 son, Ann. M. N. H., 1861, 3 ser., vol. vii, p. 84. 



4. Opeas (Bxdimus) Pealei, Tryon, 1. cit, p. 110, pi. 10, fig. 5, 

 is Spiraxis Haughtoni, Benson, A. M. N. H., 1863, 3 ser., vol. 

 xi, p. 90. 



5. ? Cyclostoma Zeai, Tryon, 1. cit. p. Ill, pi. 10, fig. 6, is the 

 old Oyclophorus foliaceus, Chemnitz, sp. Tryon's figure 



* Helix Helferi, Strep. Andamomica and Hel. Andamanica excepted. No doubt, 

 Mr. Tryon has perhaps since found out more in P f e i f f e r, " Mon. Hell." 

 vols, v and vi. 



