^BT. 20 FLORIDA TREE SNAILS SIMPSON 41 



Although this form is widely distributed it seems to be rather 

 rare. Exeternally it is colored much like certain specimens of 

 Liguiis fasciatus roseatus, but the axial region is pure white through- 

 out. The yellow is paler than it is in that form. 



LIGUUS CRENATUS EBURNEUS Simpson 



Plate 4, fig. 1 

 1920. Liguus crenatm ehumeus Simpson, Proc. Biol. Soc. Washington, vol. 33, 

 p. 122. 



Shell rather solid, usually of a somewhat porcellanous texture, 

 obese to rather elongated, with rounded whorls, pure or ivory white 

 throughout or rarely having traces of spiral bronzy lines on the base 

 or at the aperture ; columella twisted. 



Length of type 52, diameter 26 mm. 



Timb's hammock, type locality ; hammocks along the rocky main- 

 land ridge from Long Pine Key to Lemon City and opposite it on 

 the peninsula; Pinechest, not typical. Has a somewhat porcellanous 

 texture and usually is without traces of spiral lines. 



LIGUUS CRENATUS MOSIERI Simpson 



Pate 4, fig. 2 

 1920. Liguus crenatus mosieri Simpson, Proc. Biol. Soc. Washington, vol. 33, 

 p. 123. 



Shell variable in size, subsolid, somewhat polished; whorls mod- 

 erately to well rounded, the earlier ones white or whitish, the last 

 ones darker, often smoky tinted or dirty greenish and having from 

 two to several green or bronzy spiral lines which are wanting at the 

 periphery ; columella straight or slightly twisted. 



Length of type 45, diameter 24 mm. ; length of a large shell from 

 Miami 50, diameter 27 mm. 



Hammocks from Arch Creek southward and westward along the 

 great rocky mainland ridge to Long Pine Key, being most abundant 

 at Miami, the type locality. 



This subspecies is nearer the typical Cuban crenatus than anything 

 we have, but it averages much smaller than that. However, I have 

 seen shells from Cape San Antonia and other localities in that island 

 that are no larger than the ordinary mosieri. 



LIGUUS CRENATUS SEPTENTRIONALIS. PUsbry 

 Plate 4, fig. 3 



1912. Uguus crenatus septentrionalis Pilsbby, Journ. Acad. Nat. Sci. Phila- 

 delphia, ser. 2 vol. 15, p 447, pi. 37, figs. 6, 6a. 

 Shell thin but strong, inflated, with but slightly rounded whorls, 

 the last usually subangulate at the periphery, with glassy surface, 



