TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 557 



24656. Ptychoparia anytus Hall and Whitfield. Plesiotype. 



Upper Cambrian. New York and Secret Canyons, Eureka 

 District. 

 Walcott. Mon. VIII, U. vS. Geol. vSurv., 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. vSurv., 1890, p. 649, pi. 95, 

 fig. 2. 



24577. Ptychoparia (Solenopleura ?) breviceps Walcott. 



Holotype. 

 Upper Camljrian. North of Adams Hill, Kureka District, 

 Nevada. 

 Walcott, Mon. VIII, U. vS. Geol. vSurv., 1884, p. 49, pi. 10, fig. 9. 



23854. Ptychoparia burnetensis Walcott. Cotj'pes. 



Upper Cam])rian. Tatttr Hill, Burnet County, Texas. 

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



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



Lower Cambrian. Wa.shington Comity, New York. 



Walcott, Amer. Journ. vSci. (3), XXXIV, 1887, p. 198, pi. i, fig. 3. 

 = Protypus ? clavatus. 



23855. Ptychoparia connata Walcott. Holotype. 



Upper Cambrian. Kau Claire, Wisconsin. 



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



35227. Ptychoparia (?) diademata (Hall). Plesiotj^pes. 



Middle Cambrian. Soda Butte Creek, Yellow.stone 

 National Park. 



Walcott, Mon. XXXII, I't. 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, Anier. Journ. vSci. (3), XXXIV, 1887, p. 197, pi. i, fig. 6; 

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



