MARYLAXD GEOLOGICAL SURVEY 177 



external markings are not well shown, but the plaits and the beak are 

 exactly as in the description of demissa. The matrix is a coarse, yellow, 

 indurated sand. 



ScAPHELLA TRENHOLiiii (Tuomey and Holmes). 



Voluia Trenholmii Tuomey and Holmes, 18.5(), Pleiocene Fossils of South Carolina, 



p. 128, pL xxvii, figs. 7, 8. 

 Scaphella Trenholmii Dall, 1890, Trans. Wagner Free Inst. Sci., vol. iii, pt. i, p. 88. 



Dr. Dall records this species from Maryland without locality. 

 Family MITRID/E. 



Genus MITRA Lannrck. 

 MiTRA MARIAXA n. Sp. 



Plate XLIV, Fig. 12. 



Description.— ^heW small, solid, six-whorled; mouth half the length 

 of the shell ; labium with a callosity at the upper end ; columella three- 

 plaited, strongest plait above; sutures distinct; whorls slightly convex; 

 surface with regular impressed revolving lines and longitudinal ribs, 

 both of which are nearly obsolete on the body whorl; lines of growth 

 faint. 



Length, 8 mm.; diameter, 3 mm. 



Occurrence.— ^T. Mary's Foematiox. St. Mary's Eiver. 



CoUectious.~\YagneT Free Institute of Science, Cornell University. 



Family FASCIOLARID/E. 



Genus FULGUR Montfort. 

 FuLGUR spixiGER (Conrad) var. 

 Plate XLV, Figs, la, lb. 



Fusus spiniger Conrad, 1848, Jour. Acad. Nat. Sci. Phila., voL i, 2nd ser., p. 117, 



pi. xi, fig. 32. 

 ? Busycon striatum Conrad, 1863, Froc. Acad. Nat. Sci. Pliila., vol. xiv, p. 584. 

 ? Busycon striatum Conrad, 1866, Amer. Jour. Couch., vol. ii, p. 69, pi. iii, tig. 8. 

 Fulgur spiniger Dall, 1890, Trans. Wagner Free Inst. Sci., vol. iii, pt. i, p. 109. 



Description. — "Fusiform, with revolving lines, and a series of ele- 

 vated acute spines on the angle of the large whorl ; the series continued 

 12 



