TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 327 



15391. Hyolithes impar Ford. Plesiotype. 



Lower Cambrian. Troy, New York. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 139, pi. 14, figs, 

 ib, id, ie; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 621, 

 pi. 77, figs, ib, id, ie. 



14995. Hyolithes neapolis Clarke. Cotype. 



Naples (Dev.). Parrish Gully, Naples, New York. 



Clarke, Bull. No. 16, U. S. Geol. Surv., 1885, p. 56, pi. 3, figs. 4, 5. 



2384S. Hyolithes newtoni Walcott. Cotypes. 



Upper Cambrian. Near Deadwood, Black Hills, South 

 Dakota. 

 Walcott, Proc. U. S. Nat. Mus., XIII, 1890, p. 270, pi. 20, fig. 4. 



8579. Hyolithes primordialis Hall ? Plesiotypes. 



I 5377- Lower Cambrian. Pioche, Nevada. 



White, Prelim. Rept. U. S. Geogr. Surv., W. 100th Merid., Svo., 

 1874, p. 6; Rept. U. S. Geogr. Surv., W. 100th Merid., IV, 

 Pt. I, 1877, p. 37, pi. i, figs. 5-5C 



= Hyolithes billingsi. 



35218. Hyolithes primordialis Hall. Plesiotypes. 



35219. Flathead (Mid. Cambrian). Yellowstone National Park. 

 St. Croix (Mid. Cambrian). Wisconsin. 



Walcott, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 454, 

 pi. 63, figs. 2, 2a. 



14885. Hyolithes princeps Billings. Plesiotype. 



18320. Lower Cambrian. Bic Harbor, Quebec, Canada, and Con- 



ception Bay, Newfoundland. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 135, pi. 13, 

 figs. 5~5b; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 621, 

 pi. 76, figs. i-ie. 



1 83 18. Hyolithes quadricostatus Shaler and Foerste. Plesiotype. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 621, pi. 78, 

 figs. i-ib. 



18317. Hyolithes similis Walcott. Cotypes. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Proc. U. S. Nat. Mus., XII, 1889, p. 38; Tenth Ann. 

 Rept. U. S. Geol. Surv., 1890, p. 622, pi. 75, figs. 3~3d. 



18319. Hyolithes terranovicus Walcott. Cotypes. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Proc. U. S. Nat. Mus., XII, 1889, p. 37; Tenth Ann. 

 Rept. U. S. Geol. Surv., 1890, p. 623, pi. 78, figs. 3~3d. 



17375. Hyolithes vanuxemi Walcott. Cotypes. 



Upper Pogonip (Ord. ) . Northeast of Adams Hill, Eureka 

 District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 18S4, p. 85, pi. 11, 

 figs. 1 6-1 6b. 



