Part II - State of New Jersey

GASTROPODA 23Turritella lippincotti Weller, 1907, p. 698, pl. 79, fig. 1.Description.-"Shell of medium size, rather rapidly tapering, theapical angle being about 20" or less. Volutions flattened on the surfacein the direction of the spire, with scarcely perceptible suture lines whcrethe shell is preserved, and only vcry moderate ones in the east; theirform in a section being trapezoidal, the upper and lower outer anglesbeing rather sharply angular, even in an internal cast; basal face seareelyconvex ; volntions nnmerous, a fragment measuring not quite 2 inchesin length, with a diameter at the lower end of five-eighths of an inch, retainingseven, ~ ith space at the upper portion for about fire more. Surfaceof the shell marked, in the only specimen which preserves it, by finerounded spiral, thrcad-lilx lines over the entire surface." (Whitfield)Remarks.-Whitfield's types of this species are casts from naturaln~onlds ivhich shorn the external features of the shell. The species iscl~aracterized bx the flat ontcr surfaec of the volutions, and the slightlyimprcssecl suture. ~I'hitficld does not illustrate the casts of t.he species,although he ~ncntinns their charactcrs.Turritella trilira Conrad 1860Plate 51, Figure 11Ttcrritellr~ trilira Conri~d, 1860, Jonr. head. Nat. Sci. l'hil., 2nd ser.,vol. 4, p. 285.Z'trrritella irilira \Veller, 1907, p. 699, p1. 79, figs. 4-5.l'itrritella tri1ii.a Garrlner, 1916, p. 489.Z't~rrilella trilira Stephenson, 1923> p. 360, pl. 90, figs. 2-9.Tiirritella trilira Jlrade! 1926, p. 161, pl. 56, fig. 3.Ti~rritella trilira Stephenson, 1941, p. 266, pl. 52, figs. 1-5.Descriptio?~.-Shell with an apical angle of about 27'; the figuredspecimen 36 mm. in length, with a maxin~um diameter of 13.5 mm., andshowing seven volutions. The specimen is incomplete at both ends, andmhcn complete it n~ust have becn 60 mm. or more in length, with 14 ormore volutions. Suture situated near the middle of a rather broad, depressetl,coneavt: channel of moderate depth, the lower slope of thechannel bcing less abrupt than the upper and mith a slight revolvingrib micl~vay of the slope; the greatest depth of the sutural furrow liesa little ahow tbc suture itself. Surface of the volutions, betmeen thcmargins of the sutural furrow, flat and marked by three strong, revolving,angnlar ribs of cqual strength, with rounded interspaces. (Weller)Reiiiarks.-This spccies is closely related to Tt&rritella bilira Stephensonand to T. qtindrillirn Johnson hut the former has two spiralNEW JERSEY GEOLOGICAL SURVEY