162 LIGUUS. 



Liguus. Pseudotrochus and Oxystrombus of Klein would have no 

 standing in binomial nomenclature even if they had been natural 

 groups, which they were not ; and Morcli's use of the names in 1852 

 was futile. The erection of Orthalicinus in 1875 by Fischer' and 

 Crosse seems to me to be quite a needless addition to nomenclature, 

 for if L. fasciatus is in need of a subgeneric name, Oxystrombus of 

 Morch fills every requirement. 



Key to species of Liguus. 



a. Columella deeply concave above, abruptly truncated at the base, 

 sinuous within the last whorl. 



b. Shell glossy and brilliant, usually with 3 to 6 distinct 

 color-bands, somewhat trochiform ; basal lip subhorizontal, 

 but slightly arcuate. Haiti. virgineus, p. 162 



b 1 . Somewhat pupiform, the last whorl rather contracted be- 

 low ; basal lip deeply arcuate. Cuba. poeyanus, p. 166 

 a 1 . Columella straight above, vertical, hardly or not sinuous within 

 the last whorl, and either continuous or truncated at the base ; 

 basal lip rather deeply arcuate. Aperture not deep purple or 

 pink within, though the parietal wall is often colored. 



b. Pale yellow or whitish, with several blackish zones, one 



above and one below the periphery more or less maculated 



with yellow ; columella but slightly truncated ; last whorl 



somewhat contracted. blainiamis, p. 174 



b 1 . Without the above combination of characters. 



fasciatus, p. 166 



Several species besides those defined above are referred to Liguus 

 and its vicinity in Pfeiffer's Nomenclator Heliceorum Viventium. L. 

 carinatus Pfr. (p. 206, no. 76) is a Peri den's ; L. emarginatus >(p. 

 260) is a form of//, virgineus ; and Orthdlicus (Corona,} histrio Pfr. 

 (p. 259, no. 77) is a species of Oleacina. 



L. VIRGINEUS (Linne). PI. 56, figs. 58-^69. 



Shell ovate-turreted, solid, smooth and glossy. Color white or 

 bright yellow, with distinct, vivid, continuous and rather narrow 

 bands of blackish, brown, green, pink, purple, or light yellow, or 

 two or three- of these colors; the bands usually 3 to 6 in number, 

 typical positions for three of them being the periphery, the middle of 

 the upper surface (ascending the spire midway between sutures), and 



