80 HELICID^E. 



136. Helix (Planispira) pilidion, Benson, 



2 Pegu ; ex c. As. Soc., Bengal. 



4 Eat of Moulmein ; coll. Dr. F. Stoliczka. 



1 Tenasserim; coll. A. Davison, Esq. 



4 Cambodia; ex c. A. Morelet, Esq. 



137. Helix (Planispira) cestus, Benson, 



6 Sylhet (type) ; ex c. As. Soc., Bengal. 



20 Assam ; coll. Major H. H. Godwin-Austen and ex c. Dr. T. Oldham, 

 and Dr. F. Stoliczka. 



138. Helix (Planispira) bolus, Benson. 



[ = H. tourannensis, Soul.] 



30 Pagan, Ponsee, Sanda ; coll. Dr. J. Anderson. 



7 Thyet Myo ; ex c. Dr. F. Stoliczka. 

 7 Locality ? ; ex c. As. Soc., Bengal. 



4 Cochin-China : ex c. A. Morelet, Esq. 



Sub-Genus TROCHOMORPHOIDES, nov., (type H. am*). 



Helix conulus, Dr. Ed. von Martens, fronj Sumatra is a third 

 species of this interesting and distinct sub-genus. 



139. Helix (Trochomorphoides) acris, Benson, 



6 Naga Hills ; coll. W. Roberts, Esq. 



9 Khasi Hills ; coll. Major H. H. Godwin-Austen. 



4 Dafla Hills ; coll. Major H. H. Godwin-Austen. 



140. Helix (Trochomorphoides), n. 8 p. 



1 Buket Pondong, Perak ; coll. Dr. Edmond Townsend. 



Sub-Genus ACAVUS, Mtf. (type H. hamastoma). 



141. Helix (Acavus) hsemastoma, Linn. 



30 Ceylon ; coll. H. F. Blanford, Esq., and G. Nevill, Esq. 



142. Helix (Acavus) melanotragus, Bom. 



10 Ceylon; ex c. G. Nevffl, Esq., and H. F. Blanford, Esq. 



143. Helix (Acavus) superba, Pfeiffer. 



7 Ceylon ; coll. Hugh Nevill, Esq. 



144. Helix (Acavus) grevillei, Pfeiffer. 



3 Ceylon ; coll. Hugh Nevill, Esq. 



