PALUDOMPS. 53 



98. Paludomus baccula, Reeve. 



Paludomus baccula, Reeve, P. Z. S. 1852, p. 128; Hanley, Conch. 

 Misc., Melan. fig. 63 ; H. & T., C. I. pi. 124, fig. 10. 



Original description: -Testa oblongo-turbiuata, spira prominente, 

 anfractibus, plano-convexis, laevigatis, vel, sub lente, subtilissime 

 striatis ; apertura parva ; olivacea, brunneo-aigro tincta. 



The dimensions according to the figure in the Conchologia 

 Indica ' are as follows : 



Alt. 17, diam. 11 mm. 



Hob. Branch of the Ganges. 



A small dark olive turbinated species, besmeared with shining 

 brown-black. 



Subgenus PHILOPOTAMIS. 



Philopotamis, Layard, A. M. N. H. ser. 2, xvi, 1855, p. 134. 

 TYPE, Paludomus sulcata, Reeve ; Ceylon. 



Range. Ceylon. 



Original description : Animal fluviatile, amphibious, delighting 

 in rocky torrents. Operculum horny, subtriangularly ovate ; 

 apex superior, paucispiral ; nucleus sub-basal, dextral. 



The subgenus is based upon the characters of the operculura. 



99. Paludomus (Philopotamis) sulcata (Reeve). 



Paludomus (Philopotamis] sulcata (Reeve), Con. Icon.. Palud. sp. 8 ; 

 H. & T., C. I. pi. 122, fig. 2. 



Original description : Shell ovate, spire prominent, whorls 

 rounded, spirally very closely grooved, grooves and intermediate 

 ridges very closely decussated with longitudinal striae ; yellowish 

 olive, painted here and there with black, sometimes entirely black, 

 interior whitish. 



Alt. 25, diam. 20 mm. (taken from pi. 3, fig. 8 c in Con. Icon.). 



Hob. In a mountain stream at Ratnapoora, Ceylon ; TJda 

 Pussellawa, Ceylon (Preston). 



Subvar. minor, Nevill, Hand List, pt. 2, p. 299 ; cf. Brot, Conch.- 

 Cab. ii, pi. 5, fig. 18. 



Apparently a small form. 



Alt. 14-5, diam. 11'5 mm. (according to Brot's figure). 



Hob. Ceylon (Stoliczka). 



Yar. contracta, Nevill, torn. cit. ; Brot, Conch.-Cab. ii, pi. 5, 

 figs. 19, 20 (as ; ' P. sulcatus, var."). 



Nevill gives no description beyond the reference to Brot's 

 figure ; it appears to be a narrow form. 

 Hob. Arabegammoa, Ceylon (Blanford). 



