15H) SYSTEMATIC rALKONTOLOQY 



Plyrftoi>alpiu.r fossuhUa Comad, 18CS, Aiuer. Jour. Conch., vol. iii, p. 262. 

 Ptychosalpiiijc Ueuosa Conrad, ISGS, Amer. Jour. Couch., vol. iii, pp. 363, 30o, pi. 



xix, tls;-. !>. 

 Pt;/i'/ioMilpiitx foiitiiiUitti Dull, 1800, Trans. Wa<;nor Kreo lust. Sci., vol. iii, pt. ii, p. 387. 

 Pti/c/iosalpinx lienomiin Dull, 18U3, Trans. Wauuer Free Inst. Sci., vol. iii, pt. ii, p. 3;>7. 

 ComhicUa (Pti/r/iosulpiiu-) liciioita Cossuiauu, HUM, Essais de Palooconch. Coiup., 



vol. iv, p. l.")l. 



Description. — *" Obovato, with distant s]iiral flattened, not very promi- 

 nent lines, between which are usually 3 lines, the middle one largest; 

 whorls of the spire slightly convex; body whorl ventricose; lines of 

 growth distinct; columella with two distant plaits, the inferior one at 

 the angle which is prominent." Conrad, 18-A3. 



It seems highly probable that when more material belonging to this 

 genus is collected from the Calvert formation, this species will be found 

 to be connected with P. nuiUinigaia by such, a complete gradation series 

 that but a single species can be recognized. Then both fossulaia and 

 lienosa will have to be considered synonyms of multinigata, or else 

 lienosa used as a variety. 



Length, 45 mm. ; diameter, 36 nun. 



Occurrence. — Calveut Formation. Plum Point. 



Collections. — ^[aryland Geological Survey, U. S. ISTational Museum, 

 Philadelphia Academy of Natural Sciences. 



? Family NASSID/E. 

 ? Genus ILYANASSA Stiiiipsoii. 

 Subgenus PARANASSA Conr.id. 



Ilyaxassa? (Paranassa) porcina (Say). 

 Plate XLYIII. Figs. 8, 9. 



Bmrinum porciniim Say, 1834, Jour. Acad. Nat. Sci. Phila., vol. iv, 1st sen, p. 136, 

 pi. vii, fig. o. (Reprint, Bull. Amer. Pal., No. 5, 1896, p. 33, pi. vii, fig. 3.) 



? Biiccinum aratiim Say, 1834, Jour. Acad. Nat. Sci. Phila., vol. iv, 1st ser., p. 136, 

 pi. vii, tig. 4. (Reprint, Bull. Amer. Pal., No. 5, 1SS>6, p. 33, pi. vii, fig. 4.1 



Biitriniini porchutm Courad, l!So3, Fossil Shells of the Tertiary, No. 1, p. 19, pi. iv, 

 fig. 4. 



Biiccinum porciniim Tuoiuey and Holmes, 185T, Pleiocene Fossils of South Caro- 

 lina, p. 133, pi. xxviii, tig. 1. 



Buccinum porcinum Emmons, 1S.5S, Report N. Car. Geol. Survey, p. 356, tig. 133. 



Trjtia porcina Conrad, 1S63, Proc. Acad. Nat. Sci. Phila., vol. xiv, p. 563. 



? TritinaraUi Courad, 1S6S, Proc. Acad. Nat. Sci. Phila., vol. xiv. p. 563. 



Tritia porcina Meek, 1S64, Pliocene Check List, Smith. Misc. Coll. (183), p. 30. 



? Tritia oi<a(a Meek, 1864, Miocene Check List, Smith Misc. Coll., (183), p. 30. 

 (No. 668, not No. 689.) 



