170 LIGUUS. 



is also the pattern occurring in Cozumel Island, where one specimen 

 (pi. 58, fig. 83) was collected in 1899 by Dr. C. F. Millspaugh dur- 

 ing the West Indian cruise of the yacht u Utowana." It was found 

 on the trunk of a low Sabal palm about two feet from the ground, 

 and about 500 feet from the beach. 



It does not seem to me desirable to apply names to the numerous 

 forms of L. fasciatus until they are far better understood than at 

 present ; but a synopsis of the main variations may be useful. 



Cuban varieties. 



I. Typical form. Solid and strong, the columella more or less 

 truncate; white with a broad belt varying from purplish- 

 pink to bluish above and another below the white peripheral 

 band, which is usually divided by a brown line ; the colored 

 belts generally with greenish lines and dark flames ; spire 

 flammulate, with spiral lines at the sutures ; columella and 

 apex pink or white ; parietal callus often pink-edged (pi. 57, 

 figs. 70, 71, 72). Cienfuegos, etc. Through various transi- 

 tions this blends with form la. 



The Cozumel Island form is somewhat similar to the above. 

 It is solid with distinctly truncated columella; with two wide 

 blackish bands, traversed by darker lines and somewhat 

 spotted with yellow, on a white ground becoming yellowish 

 below and pink near the apex, the bands gradually disappear- 

 ing on the latter half of the last whorl, and replaced by 

 several greenish lines, (pi. 58, fig. 83). 



la. Similiarly solid, large, the columella varying from 

 very strongly to weakly truncate. White, often yel- 

 lowish on the last whorl, with a brown line at the 

 periphery, and numerous grass-green or yellowish- 

 green lines and narrow bands, and more or less 

 streaked or maculated with purplish above; parietal 

 callus often with a dark chestnut border, and some 

 sigmoid streaks within (pi. 57, figs. 73, 74). 

 Transitions towards var. crenata occur. 

 Ib. Similar to a, but green lines wanting or faint (A. pal- 

 lida Swains., pi. 58, fig. 82). The lack of green lines 

 is often due to wear. The chestnut streaks upon the 

 parietal callus are often conspicuous. This form some- 

 times attains a length of 70-75 mill. 



