40 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



20110. Ammonites ( Amaltheus ) whiteavesii White. Cotypes. 



Jurassic. Wrangell Bay, Alaska. 



White, Bull. No. 51, U. S. Geol. Surv., 1889, p. 69, pi. 13, figs. 

 i-5- 



28949. Amnicola? cretacea Stanton. Cotypes. 



Dakota? (Cret. ). Fawn Creek, Yellowstone National 

 Park. 



Stanton, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 633, pi. 

 75, %• 8. 



1 13565. Amnicola floridana convexa Pilsbry. Plesiotypes. 



Pliocene. Caloosahatchie River, near Fort Thompson, 

 Florida. 



Pilsbrv, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, 



p'338. 



1 13567. Amnicola omphalotropis Pilsbn\ Holotype. 



Pliocene. Caloosahatchie River, near Fort Thompson, 

 Florida. 



Pilsbry, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1S92, 

 P- 339- P 1 - 21, fig- 13- 



1 1 1588. Amphidesma burnsi Whitfield. Cotype. 



Miocene. Shiloh, New Jersey. 



Whitfield, Mon. XXIV, U. S. Geol. Surv., 1894, p. 79, pl. 14, figs. 

 16-18. 



=Semele burnsi. 

 See Abra sequalis. 



158260. Amphihelia natchitochensis Vaughan. Cotypes. 



Lower Claiborne. Natchitoches, Louisiana. 



Vaughan, Mon. XXXIX, U. S. Geol. Surv., 1900, p. 124, pl. 12, 

 figs. 12-1S. 



24645. Amphion nevadensis Walcott. Cotypes. 



Upper Pogonip (Ord.). Bellevue Peak, Fureka District, 

 Nevada. 

 Walcott, Mon. VIII, U. S. Geol. Sun-., 1884, p. 94, pl. 12, fig. 13. 



162550. Amphissa ventricosa Arnold. Holotype. 



Pleistocene. Deadman Island, off San Pedro, California. 

 Arnold, Mem. Calif. Acad. Sci., Ill, 1903, p. 242, pl. 5, fig. 11. 



43769. Amplexopora affinis Ulrich. Figured sections of holotype. 

 Richmond (Ord.). Wilmington, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1S90, p. 450, pl. 36, fig. 2a. 

 = Heterotrypa affinis. 



42313. Amplexopora ampla Ulrich and Bassler. Cotypes and figured 



section. 

 Lorraine (Ord.). Nashville, Tennessee. 



Ulrich and Bassler, Smithsonian Misc. Coll., Quart., XL VII, 1904, 

 p. 42, pl. 13, figs. 7, 8; pl. 14, fig. 3. 



