MIOCENE MOLLUSCA AND CRUSTACEA. 101 



acter mentioned in the description are much less marked on the smaller speci- 

 men, and consist merely of very rugose lines of growth, scarcely breaking 

 up the surface into the squares shown on Mr. Conrad's figures. On the 

 exfoliated specimen, however, this feature is very distinct. 



Formation and locality: In the micaceous Miocene marls at Jericho, 

 N J. From the collections of the National Museum. 



Family BUCCINID^E. 

 Genus BUSYCON Bolten. 



BUSYCON CARICA. 

 PI. XVIII, fig. 1. 



Murex carica Linn. : Gmelin; Martini, Kporr, etc. 



Pyrula carica Brug. : Encych Method ; Lamarck, Adams, Gould, and others, as a recent 



shell. 

 Pyrula carica f Tuomey and Holmes: Plioc. Foss. S. Car., p. 145, PL xxix, fig. 1. 

 Fulgur carica Conrad: Proc. Acad. Nat. Sci. Phila., vol. 7, p. 319. 

 Busycon carica Conrad: Proc. Acad. Nat. Sci. Phila., 1862, p. 560; Meek, Check List 



Miocene Foss., p. 21. 



Shell large, pyriform, with a low conical spire, the volutions in which 

 are margined on the periphery by a row of distant, somewhat flattened, 

 tubercular spines, and are coiled upon each other so as to leave scarcely any 

 of the surface below the spines exposed; upper surface of the volutions 

 scarcely, or barely concave, between the suture and spines; apical angle 

 variable, but always nearly 90 degrees. Aperture large ; anterior canal broad 

 and open; columella thick and heavy, strongly bent near the middle of the 

 length, and together with the inner lip of the shell broadly coated with a 

 thin, polished enamel. Surface of the shell marked by transverse lines of 

 growth, with often stronger ridges leading from the tubercles of the spire; 

 also by faint or obsolete spiral lines. 



A single large individual of this species, somewhat imperfect, has been 

 sent me, which measures nearly 9 inches in length. The tubercles are not 

 as strong as in many specimens of the living shell found along the coast, 

 although, the shells seldom attain such dimensions. In all other respects I 

 can find no difference between it and the living shells. The species would 



