24 NAT1CA. 



base, with a more or less distinct narrow yellowish white band 

 on the upper part of the whorls ; interior chocolate tinged, 

 callus white. 



Panama, etc. 



Large sized like the Var. Chemnitzii, into which it passes. N. 

 mustelina, Swains., may be a water-worn specimen of this variety ; 

 it has not been recognized as a species. 



Var. CHEMNITZII, Pfr. Figs. 94-96. 



Grayish blue or grayish yellow, with four or live rather indis- 

 tinct bands of sagittate markings either light chocolate or 

 whitish, often connected by lightning-like whitish longitudinal 

 streaks ; interior dark chocolate, banded. Large sized. 



Panama to Mazatlan and W. Africa. 



N. Pritchardi, Forbes (fig. 94), is a synonym of this variety, 

 as is also possibly N. Cernica, Jouss. (fig. 96), from Mauritius. 



N. INSECTA, Jousseaume. PI. 6, figs. 98, 99. 



Shell thick, solid ; whitish, with a central yellow band, and a 

 few longitudinal flexuous chestnut stripes above and below it ; 

 umbilicus with a slight central entering callus. Length, 8 mill. 



Hab. unknown. 



Possibly a variety of the preceding species. 



N. LINEOZONA, Jousseaume. PI. 5, fig. 97; PI. f>, figs. 100, 1. 



Umbilicus open, with a small entering callus ; white, with four 

 equidistant spiral chestnut lines, and longitudinal chestnut 

 flammules extending from the suture to the second revolving 

 line, interrupted between the second and third, and again 

 extending from third to fourth. Length, 9 mill. 



New Caledonia. 



N. Gaidei, Souverbie (fig. 100), and N. notata, Sowb. (fig. 1), 

 are synonyms. 



N. LOCELLUS, Reeve. PI. 6, fig. 2, enlarged. 



Livid flesh-tinged, fulvous brown, .obscurely filleted and 

 stained ; columella thinly callous ; umbilicus partly filled. 



Habitat unknown. 

 Is possibly a variety of N. marochiensis, Gmel. 



N. ASELLUS, Reeve. PI. 6, figs. 3, 4, considerably enlarged. 

 Whorls faintly plicately striated at the suture, columella 



