704 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



24540. Zaphrentis ? multilamella Hall ? Plesiotypes. 



Upper Carboniferous. Strongs Knob, Great Salt Lake, 

 Utah. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 53, 

 pi. 6, figs. 4a, 4b. 



1 175. Zaphrentis recta Meek. Cotypes. 



Base of Upper Devonian. Anderson River, Mackenzie 

 River Basin, Canada. 



Meek, Trans. Chicago Acad. Sci. , I, 1868, p. S2, pi. n, figs. 1, ia. 



9192. Zaphrentis spinulifera Hall. Plesiotype. 



St. Louis (Miss.). Marion County, Iowa. 

 White, Amer. Journ. Sci. (3), V, 1S73, p. 72. 



15055. Zaphrentis stansburii Hall. Cotypes. 



Upper Carboniferous. Stansburys Island, Great Salt 

 Lake, Utah. 



Hall, Stansbury's Expl. and Surv. Valley Great Salt Lake, Utah, 

 1852, p. 408, pi. 1, figs. 3a, b. 



24541. Zaphrentis ? stansburii Hall? Plesiotypes. 



Upper Carboniferous. Boxelder and Logans Peaks, 

 Wasatch Range, Utah. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 54, 

 pi. 6, figs. 3-3C 



35372. Zaphrentis tantilla Miller. Plesiotypes. 



Ouray (Miss.). San Juan Region and Crested Butte 

 District, Colorado. 

 Girty, Prof. Pap. No. 16, U. S. Geol. Surv., 1903, p. 269. 



33305. Zaptychius carbonaria Walcott. Holotype. 



Lower Carboniferous. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 263, fig. 7. 



39936. Zeaecrinites magnoliaeformis Troost. Chirotype. 



Mississippian. Near Huntsville, Alabama. 



Troost, Proc. Amer. Assoc. Adv. Sci., II, 1850, p. 61. 



20129. Zirphaea plana White. Holotype. 



Chico (Cret. ) . Martinez, Contra Costa County, California. 



White, Bull. No. 51, U. S. Geol. Surv., 1889, p. 15, pi. 4, fig. 22. 



46575. Zittelella lobata Ulrich and Everett. Figured sections of 



cotype. 

 Stones River (Ord.). Dixon, Illinois. 



Ulrich and Everett, Geol. Surv. 111., VIII, 1S90, p. 270, pi. 4, 

 figs. 3b, 3c. 



46576. Zittelella typicalis Ulrich and Everett. Figured sections of 



cot3 r pe. 

 Stones River (Ord.). Dixon, Illinois. 



Ulrich and Everett, Geol. Surv. 111., VIII, 1S90, p. 26S, pi. 5, 

 figs. 3a, 3b. 



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