CYCLOTACEA. 2fil 



var. major. 



7 KMsi Hills ; coll. Major H. H. Godwin-Austeii. 



var. arakanensis, Bianf. 



2 Akyab (typiciil of the var.); coll. W. T. Blanford, Esq. 

 10 Cbittagong ; coll. H. Eaban, Esq. 



3. PterOCyclus magnUS, Godwin- Austen. 



The compressed last wliorl, which is semi-detached at the 

 proportionately smaller aperture, the more open umbilicus and 

 the dilTerent character of the "tube," distinguish this form from 

 the large variety of the preceding. It is, I think, doubtfully 

 more than a well defined variety. 



1 Dihiri, Datla Hills ; coll. Major H. H. Godwin-Austen. 



4. Pterocyclus cumingi, Pfeiffer. 



4 Ceylon; coll. E. L. Layard, Esq. (As. Soc, Bengal). 



2 Ceylon; coll. H. Nevill, Esq. 



7 Ceylon ; ex c. Dr. F. Stoliczka. 



var. trOSCheli, Bens. (P. troschcli, fide H. Nevill). 

 A small, compressed variety. 

 2 Ceylon; coll. G. Nevill, Esq. 



var. 



1 Travancore; ex c. Dr. F. StoHczka. 



6. Pterocyclus cingalensis, Benson. 



Exceeding close to the preceding, but perhaps separable. 



2 Ceylon ; coll. H. Nevill, Esq. 



6. Pterocyclus bifrons, PfeifPer. 



1 Ceylon ; coll. H. Nevill, Esq. 



7. Pterocyclus insignis, Theobald. 



1 Shan states ; ex c. W. T. Blanford, Esq. 



2 Loc. ? ; ex c. Dr. F. StoHczka. 



var. planorbioides. 



The spire is actiially sunken in this remarkable Planorbis- 

 like fonn : the last whorl is more compressed : the ai>ertiire 

 smaller; and the umbilicus moi'e open and shnllow than in the 

 type foinn. The excavated suture is common to both. 



3 Kakbyen Hills ; coll. Dr. J. Anderson. 



