12 



Records of the Indian Museum. [Vol. XXII, 1921.] 

 Measurements of shells (in millimetres). 



Locality. — The specimens are labelled, in writing on each shell) 

 as being from Tranquebar, which is on the east coast of Southern 

 India, and it is stated in the old catalogue of the A.S.B. collection 

 that they were collected by Captain Lewis. Nevill, however, was 

 of opinion that the " locality can only be accepted with considerable 

 reserve." We have seen no other specimens, but Nevill's doubt as 

 to the provenance of the type-series was probably due to his 

 belief in its apparent specific identity with T. nux. 



