Bulletin 27 130 



longer than the length of the shell, narrow and with the sides 

 nearly parallel below, but curving above towards the apex; out- 

 er lip with a heavy varix, thickened near the middle, denticu- 

 lated within, the denticles strongest anteriorly, fairly regular in 

 the middle, absent from the posterior end; inner lip with a 

 small callus at the posterior end, the remainder without but 

 with 4 strong, subequal plications; these columellar plications 

 are somewhat oblique, with the most posterior one situated at 

 about the anterior third; surface of the shell weathered but 

 probably smooth and polished when fresh. 



Length 4.J. breadth 22 mm. 

 This species belongs to the group of Margin et/as containing 

 M. antiqua Redf of the Duplin Miocene and M. wilcoxiana Dall 

 of the Pliocene. The above shell is much larger than either of 

 these two, M antiqua measures constantly about 31 — 34 mm, 

 while wilcoxiana is much smaller (16 mm). There seems also 

 to be a constant difference between tayloii and antiqua as re- 

 gards the position of the columella plications, being situated 

 more anteriorly in taylori. 



Named for Bayard Taylor, a member of the second Ec- 

 phora trip. 



Yorktown formation ; Chocowinity , N. C. 



Marginella schmidti, n. sp., Plate 2, Fig. 13 



Shell rather small, stout, polished, with an elevated spire 

 and large body- whorl; the body- whorl is widest just above 

 the middle; whorls 4; nucleus blunt; suture indistinct but 

 bordered by a prominent ridge defined by a spiral line below ; 

 growth lines quite evident, strongest and somewhat irregular 

 on the area bordering the suture ; aperture narrow, somewhat 

 longer than the length of the body -whorl ; outer lip with a heavy 

 varix, grooved posteriorly at its attachment to the body-whorl; 

 outer lip denticulated within, the most posteriorly situated den- 

 ticle large and heavy, the others smaller, subequal or obsolete ; 



