Part II - State of New Jersey

GASTROPODA 85from the slvell of the body volution when looking upon tlie front of theshell, forming about two-fifths of the entire height; rolntions four anda half to five in number, short, indistinctly marked and the suturesobscure; the body whorl somewhat produced below, forming a shortcanal; aperture large, elliptical, pointed above and notched belorv;and about equaling one-half the length of the shell; surface of the shellmarked with strong, longitudinal ribs, which are quite distant andnumber only about 10 on the body whorl; the ribs are strong, sharplyelevated, with concave interspaces, and with fine longitudinal lines ofgrowth marking the surfaces; and the whole crosscd by elevated threadlikeraised lines, distant and distinct, but most plainly marked on theridges; on the internal casts, the most usual condition, the spire is moreelevated and the form less robust, with more distinct sutures and thevolutions more ventrieose, while their surfaces are less strongly markedby the longitudinal ribs, and no spiral lines are visible; no evidence ofmarkings can be detected on the columella, either on the shell or on thecast. The outer lip of the aperture appears to have been slightly thickened,hut no evidence of internal striae exists. The features of the notchin the outer tip cannot be ascertained." (Whitfield)Ranp in New Jerse?l-DZT. LAUREL-NAVESINE: 37,39,40,47, 53Type.-Afiillica Hill, N. J., AXSP (?).Cithara crosswickensis Whitfield 1892Plate 62, Figure 12Cithara Crosswickensis Whitfield, 1892, p. 107, pl. 13, figs. 7-8.Cithara crosswicke~sis Wellcr, 1907, p. 603, pl. 98, figs. 20-21.Description.-"Shell of moderate size or larger, suhfusiform orturriculate, the spire as long as or longer than the length of the bodyvolution and beak, only moderately slender, the apical angle beingabout 30" to 35", and the number of volutions probably about five; allthe specimens being imperfect and mostly casts, the exact number cannot be determined; body volution large in proportion to the others,quite ventricose in the upper part and contracted below to form theshort beak; upper volutions only moderately ventrieose; suture, in thecasts, strongly marlred and the volutions rather abrupt on the uppermargin; aperture large, angular above, and more sharply so below;columella strong, leaving a moderately large cavity by its removal,which, in the most perfectly formed cast, shows evidence of a single,rather strong, oblique plication on the lower part; volutions marked bydistant, strong and angular vertical folds, extending from the suturcto near the base of the beak on the body volution, and from suturc tosuture on the others, even on the casts; surface of the shell marked hyvery fine transverse striae parallel to the folds, which are only slightlydirected forward in their lower part; and by extremely faint indica-NEW JERSEY GEOLOGICAL SURVEY