Part II - State of New Jersey

Endoptygma umbilicata (Tuomey) 1855Plate 49, Figures 7, 8Phorlrs ~i~ilbilicnlrrs Tuomey, 1855, Proc. Acad. Nat. Sci. l'hil. Yol. 7:1). 169.Entloptyplu ic.r~lbilieatu \Vhitfield, 1892, p. 136, pl. 17, fig. 20.Endopt!lgnta a~~~bilieata\\'eller, 1907, p. 692, pl. 78, figs. 4-6.Endoptygnrn ~r~~lbilieata Groot, Organist and Richards, 1954, p. 50.I)oseriplw~~.-"Sl~ell rather helow a mcdirun size, spire hroa(1lyconical, with an apical angle of about SOo, and con~posed of about fol~rrolutions; base flat or sligl~tly concave, and in the cast sholring a smallopen umbilical perforation, representing the compi~ratircly slenclcrsolid columella; the base of the cast is marked by a rather deep, narrol17,spiral groove? about one-third to one-fourth of the ~vidt11 of the rolutionfrom the umbilical cavity, marking the position of an internal spiralridge at this point on the inside of the basal portion of the sllell; rolutionsflattened in this direction of the spire, ~vitll mo(lerate1y distinctsuture lines separating them in the casts, their surfaces closely all11deeply scarred by the attaehmcnt of foreign substances to t,l~e outsi111:of the shell during life." (\Vhitfield)The dimensions of an average specimcn arc: height,, about 14 IIIIII.;~nasilnnm diameter, 19.5 mm.Hnnye in. NEZU Jersey-~~EL~CLIANTVILIJF, : 8,13,15\ITOODRURP: 20Rrnq~ge urrtsi(1e New Jersey-Delavare, Alabama, Rfississippi.T!/pe.-NoxnheeCounty, Rfississippi.lpamily TrichotropidaeLirpsa ? lepida Stephenson 1955Plate 45, Figure 10Llrpsa ? lepida Stephenson, 1954, p. 30, pl. 8, figs. 6-13.Description.-"This species is represented at the soutl~ern pit of theNew Jersey Clay Proc111cts Co. (IJSGS 19014) by many external an(linternal molds some of which sho~v the form and sculpture of t,he shcllInore clearly than others. Shell of medium size with lo\\, spirc andrapidly expanding whorls; spiral anglc '75' to 80' on different individuals.Suture of medium depth, closely apprcssed in earlicr stages,becoming loosely coiled in the adult stage. Form and attitr~~le of protoconchnot dctermine(1. \Vhorls 2 or :I. Body 11-horl large; siclc gcntlyconvex in profile, sloping steeply from suture to a earin~~ted slionlderNEW JERSEY GEOLOGICAL SURVEY