MELANIlDyli]. 301 



37. Paludomds [Philopotamis] deeussata. 



Paludomus decussatus, Heeve, P. Zool. 8. 1852, Ceylon, " coll. La-yard" ; 

 Fliilopotamls sp., H. F. Blanford [not Brot'\. 



1 Ceylon [with operc] ; coll. H. Nevill, Esq., [as " very rare"]. 

 3 John's Hill, Ceylon; coll. H. F. Blanford, E.q. 



The characteristic sculpture is very distinct in my brother's 

 fine specimen. 



Sub-Genus TANALIxl, Gray. 



Proc. Zool. Soc, 1854, type Nerita aculeata, Chemnitz ; sect. = Stomatodon, 

 Benson, Ann. Mag. 1862, type Pal. stomatodon [dist. Genus, Jide Brot, 



1S80']. 



Mr. Layard states that the section inhabits mountain tor- 

 rents. 



Dr. Stoliczka described and figured a tertiary species from 

 the N. E. Alps as T. piclileri, Homes, in the Sitz. K. Ak, 

 Wien XXXVIII, 1869 ; I think this form is correctly classi- 

 fied, but probably his figs. 7-9 represent a distinct species from 

 fig. 6. 



S8. Paludomus [Tanalia] aculeata. 



Nerita aculeata, Chemnitz, Conch.-Cah. fig. 1642. 1786 £nof Nerita aculeata, 

 Omelin = Neritina sp.'] ; fide Brot, 1880, should be Tanalia loricata. 

 Reeve, Icon. 1847, Rapids of Adam's Peak, Ceylon; fide Brot, var. = 

 Tanalia similis, Layard. 



30 Ceylon ; coll. H. F. Blanford and H. Nevili, Esqrs. 

 Long. 40, diam. 35 mil. 



suhvar. erinacQa. 



Paludoinus erinncens, Reeve, Proc. Zool. Soc. 1S32, Ceylon; = P. sh'nneri, 

 Dohrn, P. Zool. Soc. 1857, Ceylon. 



7 Ceylon ; coll. H. Nevili, Esq. 

 I cannot separate P. skinneri, Dohrn, even as a sub- variety. 



var. undata. 



Paludomus undatus, Reeve, Icon. 1847, "Adam's Peak, Ceylon" [^fide Brot, 

 not adtdt~\. 



15 Ceylon ; coll. H. Nevili and H. F. Blanford, Esqrs. 



