BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1337 



Zaphrentis subregularis Savage. 



Zaphrentis subregularis Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 62, pi. 3, 



fig. 5; pi. 7, fig. 1. 

 Upper Medinan: Pike County, Missouri (Edgewood); Will County, Illinois 



(Channohon). 



Zaphrentis subvada Hall. 



Zaphrentis subvada Hall, 35th Rep. New York State Mus. Nat. Hist., 1884, p. 415 



(ext„, 18S2, p. 11). 

 Niagaran (Racine): Racine, Wisconsin. 



Zaphrentis subvesicnlaris Hall. 



Zaphrentis subvesicularis Hall, 35th Rep. New York State Mus. Nat. Hist., 1884, 



p. 414 (ext., 1882, p. 10). 

 Niagaran (Louisville?): Charlestown, Indiana. 



Zaphrentis turbinata (Hall). 



Polydilasma turbinatum Hall, Pal. New York, 2, 1S52, p. 112, pi. 32, figs. 2a-i. 



Zaphrentis? turbinatum Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, 

 p. 85 (gen. ref.).— Grabau, Bull. New York State Mus., 45, 1901, pp. 137, 

 138, fig. 30; Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 137, fig. 30. 



Niagaran (Lockport): Lockport, New York. 



Zaphrentis nmbonata Rominger. 



Zaphrentis umbonata Rominger, Geol. Surv. Michigan, 3, pt. 2, 1876, p. 146, 



pi. 51, lower tier. 

 Niagaran : Drummonds Island and Point Detour, Michigan ; Louisville, Kentucky. 



Zaphrentis nnica Davis. 



Zaphrentis unica Davis, Kentucky Foss. Corals, pt. 2, Geol. Surv. Kentucky, 



18S5, pi. 132, figs. 7-10. 

 Niagaran (Louisville): Louisville, Kentucky. 



Zdimir Barrande. See Conchidium Linnaeus. 



ZITTELELLA Hindi and Everett. Genotype: Z. typicalis Ulrich and Everett. 



Zittelella Ulrich and Everett, Geol. Surv. Illinois, 8, 1890, p. 207.— Ulrich and 

 Everett in Miller, N. A. Geol. Pal., 1889, p. 167. 



Zittelella iiiosculaja Ulrich and Everett. 



Zittelella inosculata Ulrich and Everett, Geol. Surv. Illinois, 8, 1890, p. 271, pi. 



5, figs. 6, 6a. 

 Black River (Platteville): Near Dixon, Illinois. 



Zittelella lobata Ulrich and Everett. 



Zittelella lobata, Ulrich and Everett, Geol. Surv. Illinois, 8, 1890, p. 270, pi. 4, 



figs. 3a-c. 

 Black River (Platteville): Near Dixon, Illinois. 

 Figured sections of cotype. — Cat. No. 46575, U.S.N.M. 



Zittelella trentonensis (Wort hen). 



Cnemidium? Trentonensis Worthen, Geol. Surv. Illinois, 6, 1875, pp. 491, 492, fig. 

 Pakvospongia trentonensis Miller, N. A. Geol. Pal., 1S89, p. 1C2, fig. 113. 

 Zittelella trentonensis Ulrich and Everett, Geol. Sun-. Illinois, 8, 1S90, p. 270. 

 Black River (Platteville): Near Dixon, Illinois. 



