60 TIARID-. 



118. Paludomus (Tanalia) neritoides (Reeve). 



Paludomus (Tanalia} neritoides (Reeve), Conch. Icon., Palud. sp. 3 ; 

 H. & T., C. I. pi. 122, fig. 8. 



Original description : Shell oblong-ovate, spire a little exserted, 

 whorls rounded, obscurely obtusely ridged ; aperture rather large ; 

 olive, sharply waved in the young shell with brown, interior 

 white, columella and edge of the lip sometimes blotched here and 

 there with blackish brown. 



Alt. 31'5, diam. 24*5 mm. (taken from pi. 1, fig. 3 b in Con. 

 Icon.). 



Hob. In the bed of a river at Ambegamoa, Ceylon. 



" This species has more the form of a Nerita than any other, 

 and is distinguished in an early stage of growth by a brilliant 

 pattern of zigzag painting in the interior. The lip and columella 

 are sometimes white, sometimes blotched with blackish brown." 



Var. globosa, Brot, Conch.-Cab. ii, 1880, pi. 8, fig. 1 ; Nevill, 

 Hand List, pt. 2, p. 304. 



A somewhat swollen form. 

 Hob. Ceylon (Nevill). 



119. Paludomus (Tanalia) dilatata (Reeve). 



Paludomus (Tanalia) dilatata (Reeve), P. Z. S. 1852, p. 128; H. & 

 T., C. I. pi. 125, figs. 5, 6; Nevill, Hand List, pt. 2, p. 303 (as 

 P. (T.) neritoides var. dilatata ?). 



Original description : Testa suboblougo-ovata, spira exsertius- 

 cula; anfractibus rodundatis, superne vix depressis, spiraliter 

 obscura superficialiter liratis ; intense nigricanti-fusca, immacu- 

 lata ; apertura oblonga, inferne dilatata, intus caerulescenti-alba, 

 bi- vel trifasciata, nigro-limbata. 



The following dimensions are taken from fig. 5, pi. 125, in the 

 1 Conchologia Indiea.' 



Alt. 36-75, diam. 29 mm. 



Hob. Mountain streams of Ceylon. 



120. Paludomus (Tanalia) gardneri (Reeve). 



Paludomus (Tanalia) qardneri (Reeve), Conch. Icon., Palud. sp. 9; 

 II. & T., C. I. pi. 122, fig. 6 ; Nevill, torn. cit. (as P. (T.) neri- 

 toides var. (/ardneri). 



Original description: Shell orbicularly ovate, spire flatly 

 depressed, whorls regularly convex, very closely spirally ridged, 

 ridges rather thin, obtuse, alternately larger ; aperture very large ; 

 jet-black, interior whitish, columella and margin of the aperture 

 stained with purple-black. 



Alt. 35, diam. 34 mm. (taken from pi. 2, fig. 9 b in Con. Icon.). 



Nab. In a stream at the foot of Adam's Peak, Ceylon. 



