478 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



3590. Pachydomus antiquatus (Sowerby). Plesiotypes. 



Carboniferous. Harpers Hill, New South Wales, 

 Australia. 



Dana, Wilkes U. S. Expl. Exped., X, 1849, P- 6 93. Atlas, pi. 5, 

 fig. 2. 



25534. Pachylobius compressus Scudder. Cotype. 



Older Tertiar\ T . Roan Mountains, western Colorado. 



Scudder, Mon. XXI, U. S. Geol. Surv., 1S93, p. 90, pi. 10, fig. n. 



25535. Pachylobius delecticius Scudder. Holotype. 



Older Tertiary. White River, Utah. 



Scudder, Mon. XXI, U. S. Geol. Surv., 1893, p. 90, pi. 10, fig. 14. 



25536. Pachylobius depraedatus Scudder. Cotype. 



Older Tertiary. Roan Mountains, western Colorado. 



vScudder, Mon. XXI, U. S. Geol. Surv., 1893, p. 91, pi. 10, fig. 12. 



8153. Pachymelania chrysalis (Meek). Cotypes and plesiotypes. 



231 1 1. Bear River (Cret.). Sulphur Creek, and Sage Station, 



W3^oming. 



White, Bull. No. 128, U. S. Geol. Surv., 1S95, p. 51, pi. 7, figs. 6, 

 7, S, 12, 13. 



See Goniobasis chrysalis. 



8157. Pachymelania chrysalloidea (White). Cotypes and 



plesiotypes. 

 Bear River (Cret. ). Sulphur Creek, and near Evanston, 

 Wyoming. 



White, Bull. No. 12S, U. S. Geol. Surv., 1S95, p. 52, pi. 7, figs. 4, 5. 



See Goniobasis chrysalloidea. 



8152. Pachymelania cleburni (White). Cotypes and plesiotypes. 



231 12. Bear River (Cret.). Bear River Valley, near mouth of 



Sulphur Creek, and seven miles north of Evanston, 

 Wyoming. 



White, Bull. No. 128, U. S. Geol. Surv., 1895, p. 51, pi. 7, figs. 1-3. 



See Goniobasis cleburni. 



19016. Pachymelania ? macilenta ( White). Holotype and 



22253. plesiotypes. 



Bear River (Cret.). Sulphur Creek, and near Evanston, 

 Wyoming. 



White, Bull. No. 128, U.S. Geol. Surv., 1S95, p. 54, pi. 7, figs. 9-1 1. 



See Goniobasis macilenta. 



22315. P?chymelania turricula White. Holotype. 



Bear River (Cret.). Sulphur Creek, and Sage Station, 

 Wyoming. 

 White, Bull. No. 128, I". S. Geol. Surv., 1895, p. 53, pi. 7, figs. 14, 15. 



