TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 305 



863S. Helicoceras pariense White. Cotypes and plesiotypes. 



22 933- Colorado (Cret.). Southeast of Paria, and Upper Kanab, 



Utah. 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. I, 

 1876, p. 203, pi. 19, figs. 2a-d. — Stanton, Bull. No. 106, U. S. 

 Geol. Surv., 1893, p. 164, pi. 35, figs. 2-4. 



12307. Helicoceras stevensoni Whitfield. Holotype. 



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

 South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 447, pi. 14, 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, Proc. Acad. Nat. Sci. Phila., for 1858, p. 56. 



= Helicoceras mortoni tenuicostatum. 



471. Helicoceras? tortus Meek and Hayden. Holotype. 



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

 Pierre, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., for 1858, p. 54. 



= Heteroceras tortum. 



43417. Helicopora archimediformis Claypole. Holotype. 



Chester (Miss.). Litchfield, Kentucky. 



Claypole, Quart. Jour. Geol. Soc. London, XXXIX, 1883, p. 34, 

 pi. 4, figs. 3, 4. 



= Archimedes laxus. 



43479. Helicopora ulrichi Claypole. Holotype. 



Onondaga (Dev. ). Falls of the Ohio. 



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

 pi. 4, fig- 2. 



46057. Helicotoma declivis Ulrich. Cotypes. 



Stones River (Ord.). Murfreesboro, Tennessee. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 

 1897, p. 1036, pi. 74, figs. 34-38. 



45829. Helicotoma granosa Ulrich. Holotype. 



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



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 

 1897, p. 1035, pi. 82, figs. 32-34. 



45830. Helicotoma marginata Ulrich. Holotype. 



Richmond fOrd.). Richmond, Indiana. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 

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



23232 — 05 20 



