NANINA. 69 



Conchologicae as varieties of this species, must be referred to 

 N. rareguttata, Mousson. 



N. VITELLUS, Shuttlew. PI. 18, figs. 67, 68. 



Narrowly perforate, moderately solid, incremental striae con- 

 spicuous, with indistinct spiral lines; yellowish, obliquely 

 indistinctly strigate with darker yellow, spire becoming viola- 

 ceous towards the apex, suture narrowly white-margined below, 

 aperture yellowish ; whorls 5^-6, the last not descending, 

 periphery rounded. Diam. 35-46, alt. 22-30 mill. Celebes. 



N. RAREGUTTATA, Mousson. PI. 17, figs. 54-57 ; PI. 18, figs. 58-60. 

 Narrowly perforate, smooth, lightly rugosely marked by 

 growth-lines ; color varying from light yellowish white to light 

 purplish chestnut, becoming darker on the spire and lighter 

 below the periphery, with a narrow chocolate peripheral band, 

 showing above the suture in the spire-whorls, whole surface 

 marked by irregular short dashes of a darker color, with a 

 spiral direction ; whorls 5J, the last slightly descending ante- 

 riorly. Diam. 32, alt. 26 mill. Java. 



Yar. CREBRIGUTTATA, Martens. PI. 17, fig. 56. 



Subglobose, a little more solid, with slightly wider perfora- 

 tion ; purplish chestnut, with two yellowish bands, one on the 

 periphery and a wider, more diffused one next below the suture, 

 maculations as in the type, umbilical region yellowish. 



Pfeiffer considered this a variety of N. bella. 



Var. VENUSTA, Martens. PL 17, figs. 54, 55. 



Scarcely distinguished from the type ; light-colored, the mac- 

 ulations obscure or obsolete. 



Yar. SPARSA, Mousson. PL 18, fig, 60. 



Yellowish pink, unicolored throughout or becoming a little 

 darker on the spire, not banded, maculations distinct. 



Yar. PEASE ANA, Pfr. 



Is said by Dr. von Martens to differ from var. venusta merely 

 by its obtusely angulated periphery, perhaps the survival, in a 

 local race, of a juvenile character. 



The localities given, Timor and Burn, are doubtful. It is 

 unfigured. 



