408 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Dlaphorostoma niagarense clintonense (Foerste). 



Platyceras Niagarense var. Clintonense Foerste, Geol. Surv. Ohio, Pal., 7, 1893, 



p. 554, pi. 37a, fig. 8. 

 Clinton: Mifflintown, Juniata County, Pennsylvania. 



Diaphorostoma niagarense immaturum Savage. 



Diaphorostoma niagarensis var. immatura Savage, Bull. Geol. Surv. Illinois, 23, 



1913, p. 55, pi. 2, fig. 3. 

 Upper Medinan (Girardeau) : Near Thebes, Illinois. 



Diaphorostoma niagarense multilineatum (Calvin). 



Platystoma niagarense var. multilineatum Calvin, Bull. Lab. Nat. Hist. State 



Univ. Iowa, 1, 1890, p. 177, pi. 2, figs. 4a-c. 

 Niagaran (Waldron): Waldron, Indiana. 



Diaphorostoma perforatum Whiteaves. 



Diaphorostoma perforatum Whitea ves, Geol. Surv. Canada, Ann. Rep., n. s., 14, 



App. F, 1904, p. 52; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 261, pi. 



29, figs. 7, 7a. 

 Niagaran: Ekwan River, Canada. 



Diaphorostoma plebium (Hall). 



Platyostoma plebia Hall, 28th Rep. New York State Mus. Nat. Hist., doc. ed., 

 1875, pi. 28, figs. 14, 15; rev. ed., 1879, p. 175, pi. 28, figs. 14, 15; llth Ann. 

 Rep. Dep. Geol. Nat. Hist., 1882, p. 319, pi. 29, figs. 14, 15. Lesley, Geol. 

 Surv. Pennsylvania, Rep. P 4, 1889, p. 695, figs. 

 Niagaran (Waldron): Waldron, Indiana. 



Diaphorostoma trigonostoma (Meek). 



Platyostoma? trigonostoma Meek, Proc. Acad. Nat. Sci. Philadelphia, 1, 1871, 



169. Miller, N. A. Geol. Pal., 1889, p. 418, fig. 698. Lesley, Geol. Surv. 



Pennsylvania, Rep. P 4, 1889, p. 695, figs. 

 Platyostoma Niagarensis var. trigonostoma Meek, Geol. Surv. Ohio, Pal., 1, 1873, 



p. 185, pi. 16, figs. 3a-c, and text fig. 



Xenophora trigonostoma Whitfield, Geol. Wisconsin, 4, 1882, p. 358 (gen. ref.). 

 Niagaran: Yellow Springs, Ohio. 



DIASTOPORA D'Orbigny (part). See Berenicea Lamouroux. 

 DIASTOPORELLA Vine. See Berenicea Lamouroux. 



DIASTOPORINA Ulrich. Genotype: D. flabellata Ulrich. 



Diastoporina Ulrich, Jour. Cincinnati Soc. Nat. Hist., 12, 1890, p. 177. Miller, 

 N. A. Geol. Pal., 1st App., 1892, p. 684. Ulrich, Geol. Minnesota, 3, 1893, 

 p. 121. Pocta, Syst. Sil. Centre Boheme, 8, pt. 1, 1894, p. 17. Simpson, 

 14th Ann. Rep. State Geol. New York for 1894, 1897, p. 595. Nickles and 

 Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 20. Grabau and Shimer, 

 N. A. Index Fossils, 1, 1907, p. 119. 



Diastoporina flabellata Ulrich. 



Diastoporina flabellata Ulrich, Jour. Cincinnati Soc. Nat. Hist., 12, 1890, p. 178, 



fig. 5; Geol. Minnesota, 3, 1893, p. 122, pi. 2, figs. 2, 3. Simpson, 14th Ann. 



Rep. State Geol. New York for 1894, 1897, figs. 199, 200 (p. 595). Grabau arid 



Shimer, N. A. Index Fossils, 1, 1907, p. 120, fig. 178f. 

 Trenton (Prosser): Cannon Falls and St. Paul, Minnesota. 

 Holotype.Vat. No. 43266. U.R.N.M. 



