LIGUUS. 171 



Ic. No bands except a white one at the periphery; striped 

 with deep brown, like, an Oxysiyla (pi. 57, fig. 75). 

 An unusual color-variety. 



II. Ratler smaller, alt. 40-50 mill., solid, the Columbia more or 

 less, or not, truncated ; white or yellowish, with a few longi- 

 tudinal bluish or purplish smears, and a double row of brown 

 or bluish spots at the periphery and suture ; apex and colu- 

 niella pink or white (A. picta Reeve. PI. 58, figs. 84, 85). 

 This is a modification of var. I ; compare fig. 74 of pi. 57. 



III. Rather small and stoutly conic ; white, some whorls of the 

 spire with a wide blackish-brown zone, replaced upon the 

 penultimate or last whorl by some green lines, or continuous 

 to the aperture, with another dark zone on the base of the 

 shell ; apex and aperture either white or pink (pi. 57, fig. 76). 



IV. Small and slender, rather thin ; a white peripheral zone, with 

 longitudinal bluish, greenish or purplish streaks above and 

 below, the streaks either distinct or lost in a general purplish- 

 fleshy suffusion. Columellar truncation weak or scarcely 

 noticeable, parietal callus thin, faint pink ; apex often dark- 

 tipped ; aperture small (pi. 57, fig. 79). Pinar del Rio. 



V. Pure Avhite throughout, or with a faint pink tint on the 

 parietal wall. Columellar truncation varying from very 

 strong to imperceptible. (PI. 58, fig. 88). 



VI. Var. crenalus Swains. Rather thin, the columella straight, 

 slightly or not at all truncated. White, with numerous grass- 

 green lines, the earlier whorls, columella and thin parietal 

 callus white or nearly so. (A. crenata Swains.; A. anm's 

 Lesson. PI. 58, figs. 80, 81). This form differs from Var. 

 I in wanting dark markings on the spire and parietal wall. 

 There is sometimes a brown peripheral line. 



Floridian varieties. 



VI. White, with few or numerous grass-green lines, sometimes 

 coalescent into bands ; no brown line at periphery or else- 

 where. Apical whorls and parietal callus white or pink, 

 (var. crenatus Swains., pi. GO, figs. 1, 3, 5). These are the 

 same as the Cuban crenatus. The bands are sometimes dull 

 instead of bright green, or even olive-brown. 



Via. Similar, but more or less tinted or broadly zoned with 



