380 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



20115. Lysis oppansus White. Holotype. 



Chico (Cret. ). Near Pence's Ranch, Butte County, 

 California. 



White Bull. No. 51, U. S. Geol. Surv., 1889, p. 17, pi. 4, figs. 14, 15. 



23085. Lytoceras batesi (Trask). Plesiotype. 



23086. Knoxville (Lower Cret.). Three and six miles north of 



Paskenta, California. 



Stanton, Bull. No. 133, U. S. Geol. Surv., 1895, (Feb., 1896), p. 

 75, pi. 13, %s. 9-IT. 



17338. Maclurea annulata Walcott. Cotype. 



: 7339- Upper Pogonip (Ord.). White Mountain, Eureka Dis- 



trict, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 81, pi. 11, figs. 



19, 19a. 



45933. Maclurea bigsbyi Hall. Plesiotype. 



Stones River (Ord.). Dixon, Illinois. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 1039, pi. 75, fig. 10. 



45934. Maclurea bigsbyi dixonensis Ulrich. Holotype. 



Stones River (Ord.). Dixon, Illinois. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. 

 II, 1897, p. 1039. 



17342. Maclurea carinata Walcott. Cotypes. 



Upper Pogonip (Ord.). Lone Mountain, near Eureka, 

 Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 82, pi. 11, figs. 



20, 20a. 



45935. Maclurea crassa Ulrich and Scofield. Cotype. 



Trenton (Ord. J. Wykoff, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 1040, pi. 75, fig. 14. 



45936. Maclurea crassa macra Ulrich and Scofield. Holotype. 



Trenton (Ord.). Hader, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 1040, pi. 75, figs. 15, 16. 



45937. Maclurea depressa Ulrich and Scofield. Cotype. 



Stones River (Ord.). Minneapolis, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 1040, pi. 75, fig. 1. 



45938. Maclurea knoxvillensis Ulrich. Cotype. 



Trenton? (Ord.). Knoxville, Tennessee. 



Ulrich, Geol. and Nat. Hist. Sun-. Minn., Final Rept., Ill, Pt. II, 

 1S97, p. 1039. 



