126 Proceedings of the Biological Society of Washington. 



Wilds," frontispiece, figure 12. The type is in the collection of the author. 

 It is one of the most beautiful and variable shells in the world. Paratypes 

 Cat. No. 339101, U. S. N. M. (3 specimens). 



Liguus fasciatus castaneus, n. subsp. 



Shell moderately solid, with slightly convex whorls, varying from rich 

 chestnut to almost black, and marked with longitudinal or zigzag yellow 

 flames. Columellar area tinted purplish; apex purplish or whitish. In 

 all except the darkest shells there is a light band at the periphery. 



The type measures : Length, 40 mm. ; diameter, 20 mm. 



Another specimen from Long Key, Everglades, measures: Length, 

 46 mm.; diameter, 26 mm. 



The type was collected from Cox Hammock, Paradise Keys. 



There are intermediates between this form and testudineus on the one 

 hand and versicolor on the other and all three doubtless are hybrids between 

 marmoratus and some form of fasciatus. The type is in the collection of 

 the author. Paratypes Cat. No. 339106, U. S. N. M. (1 specimen). 



The author has in preparation a monograph of the Floridian Liguus, 

 discussing their origin, migration and colonization in our state, and their 

 general ecology. 



