MELANIA SUBPUNCTATA. 139 



small wrinkles, last whorl more convex, base with some 

 conspicuous ridges. Aperture ovate , acute above , narrowly 

 rounded below. Columella slightly curved; interior of 

 aperture bluish white. 



Alt. 33, lat. 12. Apert. alt. 13, lat. 6 mill. 



Hah. Borneo, legit Muller; Java, and 5 specimens without 

 locality. 



This species is closely allied to the former, but may 

 be distinguished by the more convex whorls , which are 

 not contracted nor marginated near the sutures, by the 

 interrupted lines which are , however, not always present , 

 and by the straighter columella, which is not twisted. 



7. Melania pagoda Lea. 



var. : costulata n. var. 



(Plate 2, fig. 7). 



This variety differs from the type by the spines being 

 almost obliterated, especially in some specimens, and if 

 present on the upper whorls, they are still less conspicuous 

 and have the appearance of ribs. 



Hah. Adonara and Flores , legit Semmelink 5 Koepang 

 (Timor), legit Zynen Wartel. 



Though this variety is rather different from typical 

 specimens , Dr. Brot suggested that it should belong to Jf. 

 pagoda Lea, and among the specimens of the Leyden Mu- 

 seum , really many intermediate forms are found , varying 

 from specimens which are only ribbed to such which 

 become spinous. 



Rhoou near Rotterdam, 18 September 1896. 



Notes from the Leyden Museum, "Vol. XV III. 



