FASCIOLARIIDAE 241 



iVi inches in length, heavy, squat, with its whorls shouldered by about 

 9 large nodules. Characterized by its semi-glossy, chestnut-brown color with 

 a faint, narrow spiral band of whitish at the base of the shell which terminates 

 into a small, distinct spine on the outer lip. Columella with 4 weak folds 

 at the base. Aperture yellowish tan within. Common among rocks at low 

 tide. Alias L. cingulifera Lamarck. 



Leucozonia ocellata Gmelin White-spotted Latirus 



Plate 1 1 e 



West coast of Florida and the West Indies. 



I inch in length, 73 as wide, squat and heavy. Color dark-brown to 

 blackish with a row of about 8 large, white, rounded nodules at the periphery 

 and about 3 or 4 spiral rows of smaller white squares on the base of the shell. 

 Base of columella with 3 small folds. Apex usually worn white. A common 

 intertidal species found under rocks. 



Genus Latirus Montfort 18 10 

 Latirus mcgintyi Pilsbry McGinty's Latirus 



Plate lib 



Southeast Florida. 



/4 to 2/4 inches in length, elongate, heavy, and with about 10 whorls. 

 Color cream with a soHd yellow-brown periostracum. Aperture bright 

 yellow. Umbilicus variable, but usually funnel-shaped. Each whorl with 

 8 low, rounded ribs which are noduled by 2 spiral cords in the upper whorls 

 and 4 cords on the wide periphery of the last whorl. Numerous fine spiral 

 threads present. Lower columella with 2 weak folds. Uncommon. 



Latirus infundibulum Gmelin Brown-lined Latirus 



Plate 1 1 a 



Florida Keys and the West Indies. 



3 inches in length, heavy, resembling a Fusinus in shape, but character- 

 ized by the 3 weak folds on the columella, the light-tan to light-brown shell 

 which bears small, darker brown, wavy, glossy, smooth spiral cords. 7 to 8 

 strong axial nodules per whorl. Umbilicus imperfect, sometimes funnel- 

 shaped. Moderately common in the West Indies, rare in Florida. 



Latirus brevicaudatus Reeve Short-tailed Latirus 



Plate I if 



Lower Florida Keys and the West Indies. 



I to 2% inches in length, rather broad, with a short siphonal canal, with 

 8 to 9 rounded, long axial ribs crossed by numerous spiral threads. Color 



