Vol. 33, pp. 121-126 December 30, 1920 



PROCEEDINGS 



OP THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW FLORIDIAN SUBSPECIES OF THE GENUS 



v 



LIGUUS. 



BY CHARLES T. SIMPSON. 





The following new subspecies of Liguus have been collected 

 by the writer in Lower Florida during a residence of twenty-two 

 years in that State. 



Liguus solidus crassus, n. subsp. 



Shell solid, with about seven somewhat rounded whorls; Columella 

 decidedly truncated or even twisted ; columellar area covered with a thick, 

 shining callus. Entire shell ivory white excepting a narrow, faint spiral 

 dark line at the periphery. The outer lip is reinforced within by a strong 

 callus which extends the entire length of it. 



The type measures: Length, 48 mm.; diameter, 26 mm. 



The type was collected on Watson's Hammock, Big Pine Key, Florida, 

 in 1885. I have a smaller specimen from Key West, possibly adidt 

 which measures: Length, 26 mm.; diameter, 17 mm. 



The type is in the author's collection. 



Liguus solidus lineatus, n. subsp. 



Shell large, thin, with somewhat rounded whorls, pale greenish yellow 

 with spiral green lines, those on the base more closely spaced and broader, 

 often with a red-brown line around the periphery. Apex and columellar 

 area pink; no dots at the suture nor longitudinal smears. 



The type measures : Length, 66 mm. ; diameter, 28 mm. 



The type was collected on the north side of Lignumvitae Key, Florida. 



This is figured in Pilsbry's "Variation and Zoogeography of Liguus in 

 Florida," PI. XXXVII, figs. Ac and Ad as a form of Var. lignumvitae but 

 among more than a thousand specimens examined I have always found it 

 distinct. 1 



The type is in the author's collection. Paratypes Cat. No. 339108, 

 U. S. N. M. (3 specimens). 



1 It is also figured in the writer's book, "In Lower Florida Wilds," colored front- 

 ispiece, fig. 3 (G. P. Putnam's Sons, New York). 



27— Proc. Biol. Soc. Wash., Vol. 33, 1920. (121) 



