128 



apei'tura parviuscula, oblong a ; virescenti-olivacea, fasciis tri- 



bus rufo-nigricantih%s cingulata. 

 Hab. Ceylon (Layard). 

 Chiefly characterized by its finely decussated surface. 



10. Paludomus baccula. Pal. testa oblongo-turbinata, spira 

 prominente, anfractibiis plano-convexis, Icevigatis, vel, sub lente, 

 subtilissime striatis ; apertura parva ; olivacea, brunneo-nigro 

 tincta. 



Hab. Branch of the Ganges (Westermann) . 



A small dark ohve turbinated species, besmeared with shining 

 brown black. 



11. Paludomus erinaceus. Pal. testa obovata, tenuiuscula, 

 anfractibiis convexis, liris muricato-squamatis spiraliter cingu- 

 latis ; apertura subampla; atra, intus ccerulescente, columella 

 et aperturce limbo castaneo-nigris. 



Hab. Mountain streams of Ceylon (Layard). 



This species is closely allied to P. loricatus, but proves to be di- 

 stinct in all stages of its growth. The shell represented in my mono- 

 graph of this genus (Conch. Icon. Paludomus, PI. 1. fig. la) as the 

 young of P. loricatus, is the young of this species. In P. erinaceus 

 the scales are always open, erect, and prickly. In P. loricatus they 

 are closed and nodular, and the shell is of a lighter olive brown. 

 Mr. Cuming possesses characteristic specimens of each species, from 

 the yoimg to the adult. 



12. Paludomus Layardi. Pal. testa suboblongo-ovata, solida, 

 anfractibus convexis, superne declivibus, costis angustis Icevi- 

 bus, lira intermedia, spiraliter cingulatis ; castaneo-fusca ; aper- 

 tura subampla, intus alba, columella et aperturts limbo fusco- 

 nigris. 



Hab. Mountain streams of Ceylon (Layard). 

 A fine solid species of large bold growth, encircled throughout 

 with narrow smooth ribs, having a fine linear ridge between them. 



13. Paludomus tereus. Pal. testa ovata, solidiuscula ; anfrac- 

 tibus convexis, costis angustis annularibus subdistantibus cin- 

 gidatis ; olivacea, strigis nigris undatis oblique picta ; aper- 

 tura subampla, coeridescenti-nigro limbata. 



Hab. Mountain streams of Ceylon (Layard). 



The ribs are more ring-like and distant than in the preceding spe- 

 cies, and the shell is of a Ughter olive colour variegated with obliquely 

 waved black streaks. 



14. Paludomus dilatatus. Pal. testa suboblongo-ovata, spira 

 exsertiuscida ; anfractibus rotundatis, superne vix depressis, 

 spiraliter obscure superficialiter liratis ; intense 7iigricanti- 

 fusca, immaculata ; apertura oblonga, inferne dilatata, intus 



ccBrulescenti-alba, bi- vel tri-fasciata, nigro-limbata. 

 Hab. Mountain streams of Ceylon (Layard). 



