TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 557 



24656. Ptychoparia anytus Hall and Whitfield. Plesiotype. 



Upper Cambrian. New York and Secret Canyons, Eureka 

 District. 



Walcott. Mem. VIII, U. S. Geol. Surv., 1884, p. 56, pi. 9, fig. 26. 



See Crepicephalus (Loganellus) anytus. 



18332. Ptychoparia ? attleborensis Shaler and Foerste. Plesiotype. 

 Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 649, pi. 95, 

 fig. 2. 



24577. Ptychoparia (Solenopleura ?) breviceps Walcott. 



Holotype. 

 Upper Cambrian. North of Adams Hill, Eureka District, 



Nevada. 

 Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 49, pi. 10, fig. 9. 



23854. Ptychoparia burnetensis Walcott. Cotypes. 



Upper Cambrian. Tatur Hill, Burnet County, Texas. 

 Walcott, Proc. U. S. Nat. Mus., XIII, 1890, p. 272, pi. 21, fig. 1. 



17454. Ptychoparia ? (subgenus?) clavata Walcott. Holotype. 



Dower Cambrian. Washington County, New York. 



Walcott, Amer. Journ. Sci. (3), XXXIV, 1887, p. 198, pi. 1, fig. 3. 

 = Protypus ? clavatus. 



23855. Ptychoparia connata Walcott. Holotype. 



Upper Cambrian. Eau Claire, Wisconsin. 



Walcott, Proc. U. S. Nat. Mus., XIII, 1890, p. 272, pi. 21, fig. 2. 



35227. Ptychoparia (?) diademata (Hall). Plesiotypes. 



Middle Cambrian. Soda Butte Creek, Yellowstone 

 National Park. 



Walcott, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 462, 

 pi. 64, figs. 2, 2a, 2b. 



35228. Ptychoparia (?) diademata (Hall). Plesiotype. 



St. Croix (Middle Cambrian). Near Hudson, Saint Croix 

 County, Wisconsin. 

 Walcott Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 462, 



pi. 64, fig. 2C. 



24615. Ptychoparia (Euloma ?) dissimilis Walcott. Cotype. 



Middle Cambrian. New York Canyon, Eureka District, 

 Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv.,, 1884, p. 51, pi. 9, fig. 28. 



17455. Ptychoparia ? fitchi Walcott. Cotype. 



Lower Cambrian. Near North Granville, New York. 



Walcott, Amer. Journ. Sci. (3), XXXIV, 1887, p. 197, pi. 1, fig. 6; 

 Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 650, pi. 96, fig. 5. 



