BY J. BRAZIER, C.M.Z.S., &C., &C. 843 



4. Melania Walloriensis. Nov. sp. 



Shell sharply subulate, narrow, whorls 11, flattish, longitudinally 

 obliquely ribbed, ribs numerous and close together on the upper 

 whorls, on the last 3 they are wider apart ; suture deep ; aperture 

 oblong, ovate, peristome thin ; columellar margin callously expanded. 



Length 40 : diameter 11 : aperture 10 long, 6 wide, millim. 



Sab. — The inland sea called Kamaka-Wallor 500 feet above sea 

 level, Papua Kowiay on the N. W. Coast of New Guinea, Dutch 

 Territory, Triton Bay ; discovered by Baron N. de Miklouho-Maclay 

 in 1874. 



The single specimen is all bleached and weatherbeaten white. It 

 resembles some of the subfossil species. 



5. Paludina Kowiayiensis. Nov. sp. 



Shell ovately conical, narrowly and deeply umbilicated, very 

 thin, fragile (generally covered with a lime deposit), light horny 

 brown, sometimes spotted with ojjaque brown, sculptured with 

 very j&ne oblique lines of growth and closely spirally linearly 

 striated, striations rather Avide apart, (only seen with the lens) ; 

 whorls 51, convex, the last roundly convex, (the spiral lines are 

 more numerous and distant on the first 4^) ; apex acute ; suture 

 distinct ; base with an obtuse keel round the umbilicus, aperture 

 pyriformly circular ; [jeristome thin, the margins connected with a 

 thin callous deposit ; interior bi'own. 



Diam., Maj. 19. Min. 10. Alt, 21 millim. 



Mab. — The inland sea called Kamaka-Wallor, 500 feet above 

 sea level, Papua Kowiay on the N. VV. coast of New Guinea, 

 .Dutch territory, Triton Bay ; discovered by Baron de Miklouho- 

 Maclay. 



Two specimens found ; one dead and worn, the other living, 

 covered with a lime deposit. The operculum was not preserved 

 with the specimen. 

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