TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 305 



8638. Helicoceras pariense White. Cotypes and plesiotypes. 



22933. Colorado ( Cret. ). vSoutheast of Paria, and Upper Kanal) 



Utah. 



White, Rept. U. S. Geogr. vSurv. W. looth Merid., IV, Ft. I, 

 1S76, p. 203, pi. 19, figs. 2a-cl. — vStanton, Bull. No. 106, U. S. 

 (k-ol. Surv., 1.S93, p. J64, pi. 35, figs. 2-4. 



12307. Helicoceras stevensoni Whitfield. Holotype. 



Fort Pierre (Cret. ). West .side Peaver Creek, Black Hills, 

 vSouth Dakota. 



Whitfield, Rept. Geol. and Re.sources Black Hills Dakota, 18S0, 

 p. 447, pl- '4, figs. 5-8. 



473. Helicoceras tenuicostatus Meek and Hayden. Holotype. 

 Fort Pierre (Cret.). Great Bend of Missouri, below Fort 

 Pierre, South Dakota. 



Meek and Hayden, I'roc. Acad. Nat. vSci. Phila., for 1858, p. 56. 



= Helicoceras niortoni tenuico.statuni. 



471. Helicoceras ? tortus Meek and Ha_vden. Holotype. 



Fort Pierre (Cret.). Great Bend of Mis.souri, below Fort 

 Pierre, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., for 1S58, p. 54. 



= Heteroceras tortuni. 



43417. Helicopora archimediformis Claypolc. Holotype. 



Cliester ( Mi.ss. ). Litchfield, Kentucky. 



Claypole, Quart. Jour. Geol. vSoc. London, XXNIX, 1S83, j). 34, 

 pi. 4, figs. 3, 4. 



= Archimedes laxus. 



43479. Helicopora ulrichi Claypole. Holotype. 



Onondaga ( Dev. ). Falls of the Ohio. 



Claypole, Quart. Jour. Geol. vSoc. London, XXXIX, 1883, p. 33, 

 pi. 4, fig. 2. 



461157. Helicotoma declivis Tilrich. Cotyi)es. 



vStones River (Ord.;. Murfrecsboro, Tenne.s.see. 



Ulrich, Geol. and Nat. Hist. Surv. :\Iinn., Final Rept., HI, Pi. H, 

 1897, p. 1036, pi. 74, figs. 34-3^^. 



45829. Helicotoma granosa Ulrich. Holotype. 



Stones River (Ord. ). High Bridge, Kentucky. 



Ulrich, (;eol. and Nat. Hist. vSurv. Minn., I'inal Rept., Ill, Pt. II, 

 1897, p. J 035, pi. 82, fig.s. 32-34. 



45830. Helicotoma marginata Ulrich. Holotype. 



Richmond (()rd.;. Richmond, Indiana. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., I'inal Rept., Ill, Pt. H, 

 1897, p. 1036, pi. 74, fig. 39. 



23232—05 20 



