PLEIOCENE FOSSILS. 135 



BUCCINUM TRIVITTATUM. — Adams. 



Plate XXVIII. Pig. 4. 



Nassa trivittata, Say, Jour. Acad. Nat. Sci., Vol. 2, p. 231. 

 Buccinum trivittatum, Adams, Boston Jour. Nat. Hist., Vol. 2, p. 265. 

 Buccinum trivittatum, Gould, Invert, of Mass., p. 309. 



B. testa ovato-conica, cancellata; superjicie lineis decussatis reticulata; labro aut duabus aut 

 tribus dentibus vel lineis elevatis intus instructo; apice acuto. 



Description. Shell ovate-conic, cancellate; the surface presenting a net-work of decus- 

 sating lines; lip with two or three teeth or raised lines within; apex acute. 



This species, like its predecessor, when found on the north-eastern shores of the United 

 States has usually a chalky aspect, and we have no doubt is from the fossil beds of the 

 Post Pleiocene; in advancing southwards it is more abundant, and living specimens can 

 be had in quantity on the southern coast. 



It is by no means uncommon in the Pleiocene beds of South Carolina. 



Plate XXVIII. Fig. 4, Natural size. 



Locality. Waccamaw. Museum, College of Charleston. 



BUCCINUM OBSOLETUM. — Adams. 



Plate XXVIII. Fig. 5. 



Nassa obsoleta, Say, Jour. Acad. Nat. Sci., Vol. 2, p. 232. 

 Buccinum Nov.-Eboracensis, Wood, Index Suppt, pi. 4, fig. 26. 

 Buccinum oliviforme, Kiener, Iconog. pi, 25, fig. 99. 

 Buccinum obsoletum, Adams, Boston Jour. Nat. Hist., Vol 2, p. 267. 

 Buccinum obsoletum, Gould, Invert. Mass., p. 308, fig. 210. 



B. testa ovata; super -fide lineis reticulata quasi granulata; spira corpore breviori; labro 

 paucis lineis elevatis interruptis usque ad labri marginem non productis instructo; labri 

 margine simplici, acuto; columna lato callo tecta. 



