156 LAND- AND FRESHWATER SHELLS. 



19. Melania clavus Lamarck. 



Brot, Mou. Melania, I.e. p. 175; Taf. 21, fig. 17. 

 Locality : Hills near Waingapoe , Soemba ; one subfossil 

 specimen. 



20. Melania ten Katei, n. sp. 

 (Plate 6, fig. 2). 



Shell subulately-tnrreted , solid , grayish or yellowish 

 horn-colour, often with purple-brown blotches above and 

 below the suture, apex in the adult slightly decollated; 

 whorls 7 or 8 , slightly convex , almost smooth , or upper 

 whorls covered with spiral striae, which occupy only 

 the lower part of the lower whorls and the central part 

 of the last whorl. 



The upper whorls form a regular cone; last whorl 

 inflated and with an obtuse angle a little below the suture , 

 base eventually with a few very faint striae. Aperture 

 ovately oblong, slightly angular above, rounded beneath; 

 lip simple, slightly sinuous; columella slightly curved. 



Alt. 32, diam. maj. 13, apert. alt. 11%, lat. 6 mill. 

 » 26, » » 10, » » 9, » 5 » 



Localities: Waingapoe; Massoe; a brook near Lentang, 

 N. Soemba; Isle Groot Bastaard. 



The specimens from the last-named locality are more 

 yellowish and smaller than those of Soemba , the spire is 

 less eroded and the last whorl less inflated ; they are 

 probably young shells. Those of Soemba seem to be allied 

 to M. moesta Hinds, but the whorls are not so high and 

 are more inflated; the angle is scarcely perceptible at the 

 peristome. M. sobria has small ribs on the upper whorls , 

 M. costellaris on the contrary is plicated on the lower whorls. 



The measurements are taken from the largest specimen , 

 the only one found near Massoe , without epidermis , and 

 from a fresh specimen from Lentang. 



21. Melania spec. 



Localities: Rivers of N. W. Soemba, Isle Groot Bastaard. 



Notes from tlie Leyden Museum, Vol. XIV. 



