172 LIGUUS. 



yellow, varying to forms with no green lines and 

 bright yellow color (pi. 60, figs. 10, 12, 13, Miami, 

 Fla.). 



VIb. Similar to VI, but with a broad interrupted blackish 

 zone or series of blotches on one or two whorls of the 

 spire ; sometimes a brown line at the periphery (pi. 

 60, fig. 2). 



Vic. Similar to VI&, but the broad interrupted zones ex- 

 tend to the last whorl, with or without green lines, 

 the intervals between dark blotches often yellow (pi. 

 60, figs. 4, 8, Miami, Fla.). 



Vic?. Last whorl elaborately streaked with black-brown, a 

 light band at periphery and suture (pi. 60, fig. 7, 

 Miami ; also pi. 20, figs. 27, 28). 



Vie. Streaks reduced to series of spots below the suture 

 and at the periphery (pi. 60, fig. 11, Miami, Fla.). 

 This form resembles and is a transition to the next, 

 but is more heavily marked. 



VII. Thin and light, the columella slender, not truncated. Deli- 

 cately greenish-yellow tinted, pale above, smeared longi- 

 tudinally at irregular intervals with bluish or purplish, more 

 copiously streaked on the upper whorls ; having more or less 

 developed sub-sutural and peripheral bands of spot ; brown 

 bands at periphery and suture, with another above the suture; 

 and some green lines (pi. 59, figs. 90, 91, Lignum VitaB Key), 

 or none (pi. 59, fig. 97, No Name Key) on the last whorl. 

 Apex and parietal wall faintly pink-tinted. Similar to var. 

 picta live., but thinner, with slender columella, and a white 

 band between the suture and the row of spots below it. 

 VIII. A broad blackish zone on the spire, two on the last whorl, on 

 a white ground (pi. 59, figs. 92, 93, Key Largo). This 

 connects with Vlb and the following form though specimens 

 with the dark zones absent on the last whorl, and replaced 

 by lines or a uniform white surface. In some shells the bands 

 are yellow with brown streaks. 



IX. White, with faint pinkish or gray streaks, the apex and 

 columella pink (pi. 59, fig. 94, Key Largo). Also occurs at 

 Goodland Point. 

 X. Solid and strong, pale yellow, or white, with yellow zones, 



