Part II - State of New Jersey

GASTROPODA 37volution, causing the last volutiou, as it approaches the aperture, tooverlap that one somewhat as in many of the Strontbidae. Columellasmooth, without folds or ridges of any kind; suture between the coilsof the cast strong and deep, but separated by only a narrow space, showingthe shell at this part to have been thin; the surface of the shell hasbeen marked by spiral bands of considerable width, hut their numberis not determinable from the specimens at hand; there is, however,evidence of a quite strong one near the center of the volutions, and indicationsof several others, especially on the basal portion of thc lastvolutions, but not presenting any angulation as in Anchura." (Whitfield)Range in New Jorsey-MT. LAUREL-KAT'ESINK : 40, 53Range oz~tside Noto Jersey-MarylandTypo.-Mullica Hill, N. J.Anchum arenaria Morton 1834Plate 53, Figure 5Rostellariu arenanun Morton, 1834, Synop. Org. Cret. Gr. U. S., p. 48,pl. 5, fig. 8.Anchura arenaria Whitfield, 1892, p. 112, pl. 14, fig. 10.Anehura are?lariu IVeller, 1907, p. 717, pl. 83, fig. 5.Description.-Shell rather strong and robust, about 50 mm. inlength when complete and 24 mm. in width. Volutions probably fourand one-half or five in number, strongly rounded, rapidly decreasingin size upward; suture strongly marlced; aperture narrow, the lip unknown,the rostrum apparently quite short. Each volution marked by10 or 12 vertical plications or folds, which are strongly marked nponthe convex portion, hut become obsolete towards the sutures above andbelow, while on the body volution they are not visible below the uppertwo-thirds, the lower third being destitute of markings. On the outerhalf of the last volution the folds are indistinct or obsolete; the foldsappear to have been somewhat sigmoidally curved in passing fromabove downward, being directed slightly forward below. (Weller) 1Remarks.-Morton's type specimen, which is unique, is an incompletecast.Range in New Jersey-NAVESINK: 53Type.-Mullica Hill, N. J. (?); ANSP 15008.NEW JERSEY GEOLOGICAL SURVEY