ART. 20 FLORIDA TREE SNAILS SIMPSON 35 



variable of any subspecies I know. So far as I am aware, it is 

 confined to this large key. 



LIGUUS FASCIATUS CASTANEUS Simpson 



Plate 2, figs. 6 ami 12 



1920. Liguus fasciatus castaneus Simpson, Proc. Biol. Soc. Washington, vol. 33, 

 p. 126. 



Shell moderately solid, rather large; apex whitish to deep pink; 

 columella purplish white to dark purple; surface chestnut to almost 

 black, the upper part and sometimes all of the shell marked with pale 

 to deep yellow, irregular axial stripes which are often zigzagged; 

 there is a broad, sometimes double smoky peripheral band with a 

 lighter one between, and these may be almost obliterated in very dark 

 shells ; columella slightly twisted. 



Length 52, diameter 28 mm. 



Miami to Long Pine Key. 



Typically this form is darker than testudineus, its near ally; it 

 lacks the. dark spiral lines of the latter and has a more distinctly 

 defined color pattern, but there are occasional intermediates. Shells 

 from Cox's hammock and Paradise Key are nearly black. 



LIGUUS FASCIATUS TESTUDINEUS Pilsbry 



Plate 3, fig. 1 



1913. Liguus fasciatus testudineus Pilsbry, Journ. Acad. Nat. Sci. Philadelphia, 

 scr. 2, vol. 15, p. 457, pi. 39, figs. 20 a to 20 f. 



Shell subsolid, with rather rounded whorls; axial region generally 

 pale pinkish to purplish, the columellar area sometimes almost white ; 

 color varying from yellowish to brown; in the darker shells there is 

 a pattern of irregular, light, wavy blotches and strigations; in the 

 lighter-colored specimens there may be only a double series of indis- 

 tinct spots at the suture; certain examples have bluish clouds on the 

 spire; there is usually a double smoky or dark chestnut band at the 

 periphery, with a lighter one between, and there are dark spiral lines 

 on the last two whorls. Columella generally thin, sometimes twisted. 



Length 45, diameter 23 mm. ; length 43, diameter 25 mm. 



Miami hammocks. 



A beautiful, often glossy and very variable form which seems to be 

 confined to the great Miami hammock. It differs from castaneus 

 in being lighter colored, in its occasionally clouded surface, and in 

 having dark spiral lines. Certain specimens closely approach some 

 of the lighter forms of versicolor^ but the former have the spiral 

 lines which are lacking in the latter, though there are some interme- 

 diates. There are hybrids which have numerous spiral, green lines 

 on the last whorl. 



