36 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 73 



LIGUUS CRENATUS Swainson 

 1821. Achatina crenata Swainson, Zool. 111., vol. 1, pi. 58. 



Shell medium sized to large, thin to solid, usually not porcellanous, 

 with more or less rounded whorls, typically white with spiral green 

 lines which become slightly impressed near the aperture and end in 

 small crenations on the thin edge of the outer lip ; entire axial region 

 always white. 



Whole island of Cuba; coast of Florida from Fort Lauderdale 

 around to Lossmans River on the west; Upper Florida Keys, 



This species received the name crenatus because of the slight crena- 

 tions at the edge of the shell where the green spiral lines end. But 

 only the forms having these lines show crenations ; and, as a matter 

 of fact, many specimens of fasciatus that have similar lines show 

 slight teeth. Usually lacking dark spiral lines at the periphery. It 

 freely hybridizes with fasciatus, a fact which is proven by Liguus of 

 the two types hatching from a single set of eggs here in Florida, 

 and without doubt the same thing is true in Cuba. I have no evi- 

 dence that fasciatus or crenatus hybridize with solidus wthin our 

 borders, although on Lower Matecumbe Key suhcrenatus is found in 

 the same hammocks as forms of solidus, and on Upper Matecumbe 

 one form of solidus, delicatu^, and matecumbiensis, luteus, and cas- 

 taneozonatus have been found and there is not the slightest inter- 

 gradation. But I am inclined to believe that solidus and fasciatus 

 hybridize in Cuba. The completely white axial region is the best 

 distinguishing character of this species. 



LIGUUS CRENATUS MARMORATUS Pilsbry 



Plate 3, figs. 2, 3, 7, and 8 



1912. Liguus fasciatus marmoratus Pilsbry, Journ. Acad. Nat. Sci. Philadelphia, 

 ser. 2, vol. 15, p. 455, pi. 37, figs. 9, 9a, M, 10. 



Shell generally elongated, thin to solid, with only moderately 

 rounded whorls, of which the first three and the entire axial region 

 are white ; on the next whorl there are irregular alternate white and 

 brownish axial stripes, below which the ground color becomes chest- 

 nut to almost black, and it is marked with axial yellow or whitish 

 stripes or flask-shaped blotches; there is a light band at the suture 

 and on the periphery, and at the latter place it is usually bordered 

 by two dark ones; last whorl generally showing dark spiral lines; 

 aperture white within; columella thin and straight to heavy and 

 truncate. 



Length 65, diameter 28 mm. ; length 43, diameter 22 mm. 



Key Vaca and doubtless other islands of the Vaca group; Long 

 Island of the Upper Keys, Key Largo ; Porgy Key, doubtful ; Cape 



