NANTNA. 43 



N. SCHUMACHERI AN A, Pfr. PI. 14, fig. 94. 



Chestnut-colored, slightly larger with more compressed farina 

 than the last species, chestnut-banded below the carina. 



Diam. 44, alt. 22 mill. 



Borneo. 



This is N. densa,\&i\ ft of Pfeifler,but subsequently separated 

 by him as above. Dr. von Martens unites it with densa as a 

 variety, adding as different varieties N. atrofusca, Albers ( = typi- 

 cal Sch umacheriana))\9,T. ignobilis (== typical densa), N. Herklotx- 

 iana^ Dohrn, p. 37 ; N. Mousxoniana (= N. corrosa, Mousson), 

 var. Lowiana. 



N. SEMIDECUSSATA, Pfr. PI. 17, fig. 52. 



Narrowly perforate, rather thin, striate, ver} T distinctly decus- 

 sated above by fine spiral lines, smooth and slightly shining 

 below ; fulvous-brown ; whorls 7, the last obtusely plicately cari- 

 nate at the periphery. Diam. 33, alt. 18 mill. 



Ceylon. 

 N. WEINKAUFFIANA, Crosse. PI. 17, fig. 48. 



Narrowly perforate, rather solid, arcuately finely striate, with 

 obsolete, impressed spiral lines ; yellowish brown, becoming 

 nearly white around the umbilicus; whorls fi, the last with 

 acutely angulated periphery ; lip slightly thickened, white. 



Diam. 29, alt. 13 mill. 



Cochin China. 

 N. CROSSEI, Pfr. PI. 17, fig. 47. 



Yen' narrowly perforate, moderately solid, closely, finely 

 arcuately striate above, obsoletely decussated by spiral lines, 

 smooth and polished below ; whorls 6^, yellowish white, the last 

 slightly descending at the aperture, obtusely angulated on the 

 periphery, becoming nearly white around the umbilicus ; lip 



slightly thickened within, white. Diam. 28-5, alt. 17 mill. 



Siam. 



Varieties occur in Cochin China of darker color, fulvous 

 chestnut. Less depressed and more obtusely angulated than 

 the preceding species. 



X. SEMIGLOBOSA, Pfr. PI. 14, fig. 95. 



Subperforate, rather thin, very minutely decussately granulate 

 above, smooth and shining below ; yellowish brown, with a chest- 



